Publications (222)
Tunable quantum emitters on large-scale foundry silicon photonics
Hugo Larocque, Mustafa Atabey Buyukkaya, Carlos Errando-Herranz +9
Controlling large-scale many-body quantum systems at the level of single photons and single atomic systems is a central goal in quantum information science and technology. Intensiv…
Steady-state microwave mode cooling with a diamond NV ensemble
Donald P. Fahey, Kurt Jacobs, Matthew J Turner +4
A fundamental result of quantum mechanics is that the fluctuations of a bosonic field are given by its temperature . An electromagnetic mode with frequency in the microwave…
Genetic Optimization of Photonic Bandgap Structures
Joel Goh, Ilya Fushman, Dirk Englund +1
We investigate the use of a Genetic Algorithm (GA) to design a set of photonic crystals (PCs) in one and two dimensions. Our flexible design methodology allows us to optimize PC st…
Single-Shot Optical Neural Network
Liane Bernstein, Alexander Sludds, Christopher Panuski +3
As deep neural networks (DNNs) grow to solve increasingly complex problems, they are becoming limited by the latency and power consumption of existing digital processors. For impro…
On-Chip Detection of Entangled Photons by Scalable Integration of Single-Photon Detectors
Faraz Najafi, Jacob Mower, Nicholas Harris +8
Photonic integrated circuits (PICs) have emerged as a scalable platform for complex quantum technologies using photonic and atomic systems. A central goal has been to integrate pho…
Programmable Quantum Photonic Interfaces for Quantum Networking
Siavash Mirzaei-Ghormish, Mahmoud Jalali Mehrabad, Helaman Flores +2
Quantum networks require interfaces translating memory photons to telecom wavelengths while controlling spatial modes; tasks performed by separate components today. We present a pr…
Delocalized Photonic Deep Learning on the Internet's Edge
Alexander Sludds, Saumil Bandyopadhyay, Zaijun Chen +13
Advances in deep neural networks (DNNs) are transforming science and technology. However, the increasing computational demands of the most powerful DNNs limit deployment on low-pow…
Ultra-fast calorimetric measurements of the electronic heat capacity of graphene
Mohammed Ali Aamir, John N. Moore, Xiaobo Lu +4
Heat capacity is an invaluable quantity in condensed matter physics, yet it has been so far experimentally inaccessible in two-dimensional (2D) van der Waals (vdW) materials, owing…
Towards the Information-Theoretic Limit of Programmable Photonics
Ryan Hamerly, Jasvith Raj Basani, Alexander Sludds +2
The scalability of many programmable photonic circuits is limited by the tuning range needed for the constituent phase shifters. To address this problem, we introduce the con…
Accurate Self-Configuration of Rectangular Multiport Interferometers
Ryan Hamerly, Saumil Bandyopadhyay, Dirk Englund
Multiport interferometers based on integrated beamsplitter meshes are widely used in photonic technologies. While the rectangular mesh is favored for its compactness and uniformity…
Quantum control of the tin-vacancy spin qubit in diamond
Romain Debroux, Cathryn P. Michaels, Carola M. Purser +12
Group-IV color centers in diamond are a promising light-matter interface for quantum networking devices. The negatively charged tin-vacancy center (SnV) is particularly interesting…
Routing entanglement in the quantum internet
Mihir Pant, Hari Krovi, Don Towsley +5
Remote quantum entanglement can enable numerous applications including distributed quantum computation, secure communication, and precision sensing. In this paper, we consider how…
Efficient generation of single and entangled photons on a silicon photonic integrated chip
Jacob Mower, Dirk Englund
We present a protocol for generating on-demand, indistinguishable single photons on a silicon photonic integrated chip. The source is a time-multiplexed spontaneous parametric down…
All-optical nonlinear activation function based on stimulated Brillouin scattering
Grigorii Slinkov, Steven Becker, Dirk Englund +1
Photonic neural networks have demonstrated their potential over the past decades, but have not yet reached the full extent of their capabilities. One reason for this lies in an ess…
Quantum algorithms for group convolution, cross-correlation, and equivariant transformations
Grecia Castelazo, Quynh T. Nguyen, Giacomo De Palma +3
Group convolutions and cross-correlations, which are equivariant to the actions of group elements, are commonly used in mathematics to analyze or take advantage of symmetries inher…
Rectangular Photonic Crystal Nanobeam Cavities in Bulk Diamond
Sara Mouradian, Noel H. Wan, Tim Schröder +1
We demonstrate the fabrication of photonic crystal nanobeam cavities with rectangular cross section into bulk diamond. In simulation, these cavities have an unloaded quality factor…
Ultrastrong magnetic light-matter interaction with cavity mode engineering
Hyeongrak Choi, Dirk Englund
Magnetic interaction between photons and dipoles is essential in electronics, sensing, spectroscopy, and quantum computing. However, its weak strength often requires resonators to…
Netcast: Low-Power Edge Computing with WDM-defined Optical Neural Networks
Ryan Hamerly, Alexander Sludds, Saumil Bandyopadhyay +4
This paper analyzes the performance and energy efficiency of Netcast, a recently proposed optical neural-network architecture designed for edge computing. Netcast performs deep neu…
From Pixels to PCells: A Neurosymbolic Approach to Photonic Component Creation
Aadarsh Agarwal, Kenaish Al Qubaisi, Dirk Englund
We present PixCell, a neurosymbolic system in which multimodal agents convert a visually presented photonic component into a parametric program over a small domain-specific languag…
Nonlinear Temporal Dynamics of Strongly Coupled Quantum Dot-Cavity System
Arka Majumdar, Dirk Englund, Michal Bajcsy +1
We theoretically analyze and simulate the temporal dynamics of strongly coupled quantum dot-cavity system driven by a resonant laser pulse. We observe the signature of Rabi oscilla…
Coherent spin control of a nanocavity-enhanced qubit in diamond
Luozhou Li, Tim Schröder, Edward H. Chen +11
A central aim of quantum information processing is the efficient entanglement of multiple stationary quantum memories via photons. Among solid-state systems, the nitrogen-vacancy (…
Tailoring Light-Matter Interaction with a Nanoscale Plasmon Resonator
Nathalie P. de Leon, Brendan J. Shields, Chun L. Yu +4
We propose and demonstrate a new approach for achieving strong light-matter interactions with quantum emitters. Our approach makes use of a plasmon resonator composed of defect-fre…
Generation and transfer of single photons on a photonic crystal chip
Dirk Englund, Andrei Faraon, Bingyang Zhang +2
We present a basic building block of a quantum network consisting of a quantum dot coupled to a source cavity, which in turn is coupled to a target cavity via a waveguide. The sing…
Investigation of the Stark Effect on a Centrosymmetric Quantum Emitter in Diamond
Lorenzo De Santis, Matthew Trusheim, Kevin Chen +1
Quantum emitters in diamond are leading optically-accessible solid-state qubits. Among these, Group IV-vacancy defect centers have attracted great interest as coherent and stable o…
Tutorial: Remote entanglement protocols for stationary qubits with photonic interfaces
Hans K. C. Beukers, Matteo Pasini, Hyeongrak Choi +3
Generating entanglement between distant quantum systems is at the core of quantum networking. In recent years, numerous theoretical protocols for remote entanglement generation hav…
Foundry CMOS platform for multimodal quantum materials characterization
Sharad Kumar Yadav, Luca Nessi, Ondrej Dyck +13
Quantum materials experiments increasingly rely on microwave, electrical, thermal, optical, and structural probes, but these capabilities are typically assembled from custom hardwa…
An integrated photonic engine for programmable atomic control
Ian Christen, Madison Sutula, Thomas Propson +11
Solutions for scalable, high-performance optical control are important for the development of scaled atom-based quantum technologies. Modulation of many individual optical beams is…
High-Speed Phase-Only Spatial Light Modulators with Two-Dimensional Tunable Microcavity Arrays
Cheng Peng, Ryan Hamerly, Mohammad Soltani +1
Spatial light modulators (SLMs) are central to numerous applications ranging from high-speed displays to adaptive optics, structured illumination microscopy, and holography. After…
Vector magnetometry using cavity-enhanced microwave readout in nitrogen-vacancy diamond
Reginald Wilcox, David Phillips, Matthew Steinecker +6
We demonstrate -steradian vector magnetic field sensing using an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond coupled to a microwave (MW) cavity. The…
Monolithic Integration of Piezo-Optomechanical Photonics and CMOS Electronics
Matthew Zimmermann, Aileen Zhai, Andrew J. Leenheer +10
Next-generation photonic architectures for AI, sensing, and quantum computing require thousands to millions of reprogrammable photonic devices on a chip[1]. The monolithic integrat…
Broadband Spatio-Spectral Mode Conversion via Four-Wave Mixing
Helaman Flores, Mahmoud Jalali Mehrabad, Siavash Mirzaei-Ghormish +2
We introduce a framework for scalable and broadband free-space phase-matched four-wave mixing in ring resonators. This method for four-wave mixing reduces the complexity of couplin…
A Phononic Bus for Coherent Interfaces Between a Superconducting Quantum Processor, Spin Memory, and Photonic Quantum Networks
Tomas Neuman, Matt Eichenfield, Matthew Trusheim +3
We introduce a method for high-fidelity quantum state transduction between a superconducting microwave qubit and the ground state spin system of a solid-state artificial atom, medi…
Full-volume aberration-space holography
Ian Christen, Christopher Panuski, Thomas Propson +1
Simultaneous, diffraction-limited control of multiple optical beams is crucial for applications ranging from lithography to optogenetics, deep tissue imaging, and tweezer-based man…
Tunable and high purity room-temperature single photon emission from atomic defects in hexagonal boron nitride
Gabriele Grosso, Hyowon Moon, Benjamin Lienhard +7
Two-dimensional van der Waals materials have emerged as promising platforms for solid-state quantum information processing devices with unusual potential for heterogeneous assembly…
Quantum Network Utility: A Framework for Benchmarking Quantum Networks
Yuan Lee, Wenhan Dai, Don Towsley +1
The absence of a common framework for benchmarking quantum networks is an obstacle to comparing the capabilities of different quantum networks. We propose a general framework for q…
Robust High-Dynamic-Range Vector Magnetometry via Nitrogen-Vacancy Centers in Diamond
Hannah Clevenson, Linh M. Pham, Carson Teale +3
We demonstrate a robust, scale-factor-free vector magnetometer, which uses a closed-loop frequency-locking scheme to simultaneously track Zeeman-split resonance pairs of nitrogen-v…
Breaking On/Off-coupling Loss Degeneracies via Bidirectional Nonlinear Optics
Bo-Han Wu, Mahmoud Jalali Mehrabad, Mengjie Yu +1
Accurate evaluation of nonlinear photonic integrated circuits requires separating input and output coupling efficiencies (i.e., and ), yet the conventional linear-tran…
Metal-Dielectric Antennas for Efficient Photon Collection from Diamond Color Centers
Amir Karamlou, Matthew E. Trusheim, Dirk Englund
A central challenge in quantum technologies based on atom-like defects is the efficient collection of the emitter's fluorescence. Optical antennas are appealing as they offer direc…
Universal linear optics by programmable multimode interference
Hugo Larocque, Dirk Englund
We introduce a constructive algorithm for universal linear electromagnetic transformations between the input and output modes of a dielectric slab. The approach uses out-of…
18-dB on-chip vacuum squeezing in an adaptively poled lithium niobate waveguide
Tushar Sanjay Karnik, Xinyi Ren, Chun-Ho Lee +16
Quantum squeezed states of light can enhance measurement sensitivity beyond classical limits and enable quantum information processing, but scalable low-loss sources remain challen…
Towards High-Fidelity Quantum Computation and Simulation on a Programmable Photonic Integrated Circuit
Jacob Mower, Nicholas C. Harris, Gregory R. Steinbrecher +2
We propose and analyze the design of a programmable photonic integrated circuit for high-fidelity quantum computation and simulation. We demonstrate that the reconfigurability of o…
Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution
Catherine Lee, Jacob Mower, Zheshen Zhang +2
We present a security analysis against collective attacks for the recently proposed time-energy entanglement-based quantum key distribution protocol, given the practical constraint…
Scalable construction of hybrid quantum photonic cavities
Andrew S. Greenspon, Mark Dong, Ian Christen +3
Nanophotonic resonators are central to numerous applications, from efficient spin-photon interfaces to laser oscillators and precision sensing. A leading approach consists of photo…
Routing Single Photons from a Trapped Ion Using a Photonic Integrated Circuit
Uday Saha, James D. Siverns, John Hannegan +4
Trapped ions are promising candidates for nodes of a scalable quantum network due to their long-lived qubit coherence times and high-fidelity single and two-qubit gates. Future qua…
Time-keeping with electron spin states in diamond
Jonathan S. Hodges, Dirk Englund
Frequency standards based on atomic states, such as Rb or Cs vapors, or single trapped ions, are the most precise measures of time. Here we introduce a complementary device based o…
Thermally-Polarized Solid-State Spin Sensor
Reginald Wilcox, Erik Eisenach, John Barry +4
Quantum sensors based on spin defect ensembles have seen rapid development in recent years, with a wide array of target applications. Historically, these sensors have used optical…
Photophysics of GaN single photon sources in the visible spectral range
Amanuel M. Berhane, Kwang-Yong Jeong, Carlo Bradac +4
In this work, we present a detailed photophysical analysis of recently-discovered optically stable, single photon emitters (SPEs) in Gallium Nitride (GaN). Temperature-resolved pho…
Heterogeneous integration of spin-photon interfaces with a scalable CMOS platform
Linsen Li, Lorenzo De Santis, Isaac Harris +14
Color centers in diamonds have emerged as a leading solid-state platform for advancing quantum technologies, satisfying the DiVincenzo criteria and recently achieving a quantum adv…
Quantum Metamorphosis: Programmable Emergence and the Breakdown of Bulk-Edge Dichotomy in Multiscale Systems
Mahmoud Jalali Mehrabad, Alireza Parhizkar, Lida Xu +6
Multiscale synergy -- the interplay of a system's distinct characteristic length, time, and energy scales -- is becoming a unifying thread across many contemporary branches of scie…
Low-Threshold Surface-Passivated Photonic Crystal Nanocavity Laser
Dirk Englund, Hatice Altug, Jelena Vuckovic
The efficiency and operating range of a photonic crystal laser is improved by passivating the InGaAs quantum well (QW) gain medium and GaAs membrane using an (NH4)S treatment. The…
Hybrid integration of solid-state quantum emitters on a silicon photonic chip
Je-Hyung Kim, Shahriar Aghaeimeibodi, Christopher J. K. Richardson +3
Scalable quantum photonic systems require efficient single photon sources coupled to integrated photonic devices. Solid-state quantum emitters can generate single photons with high…
Controlling the Spontaneous Emission Rate of Monolayer MoS in a Photonic Crystal Nanocavity
Xuetao Gan, Yuanda Gao, Kin Fai Mak +8
We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolve…
Scalable integration of long-lived quantum memories into a photonic circuit
Sara L. Mouradian, Tim Schröder, Carl B. Poitras +8
We demonstrate a photonic circuit with integrated long-lived quantum memories. Pre-selected quantum nodes - diamond micro-waveguides containing single, stable, and negatively charg…
Synchronous micromechanically resonant programmable photonic circuits
Mark Dong, Julia M. Boyle, Kevin J. Palm +7
Programmable photonic integrated circuits (PICs) are emerging as powerful tools for the precise manipulation of light, with applications in quantum information processing, optical…
Microring Perceptron Sensing for Low-Power Radio-Frequency Detection with Quantum-Compatible Photonic Preprocessing
Bo-Han Wu, Shi-Yuan Ma, Mahmoud Jalali Mehrabad +4
Radio-frequency (RF) sensing underpins applications ranging from radar and wireless communication to biomedical and quantum measurement, where detection sensitivity at low signal-t…
Scalable Focused Ion Beam Creation of Nearly Lifetime-Limited Single Quantum Emitters in Diamond Nanostructures
Tim Schröder, Matthew E. Trusheim, Michael Walsh +12
The controlled creation of defect center---nanocavity systems is one of the outstanding challenges for efficiently interfacing spin quantum memories with photons for photon-based e…
Terahertz Room-Temperature Photonic Crystal Nanocavity Laser
Dirk Englund, Hatice Altug, Ilya Fushman +1
We describe an efficient surface-passivated photonic crystal nanocavity laser, demonstrating room-temperature operation with 3-ps total pulse duration (detector response limited) a…
Enhanced Photodetection in Graphene-Integrated Photonic Crystal Cavity
Ren-Jye Shiue, Xuetao Gan, Yuanda Gao +6
We demonstrate the controlled enhancement of photoresponsivity in a graphene photodetector by coupling to slow light modes in a long photonic crystal linear defect cavity. Near the…
An integrated source of spectrally filtered correlated photons for large scale quantum photonic systems
Nicholas C. Harris, Davide Grassani, Angelica Simbula +7
We demonstrate the generation of quantum-correlated photon-pairs combined with the spectral filtering of the pump field by more than 95dB using Bragg reflectors and electrically tu…
Modular chip-integrated photonic control of artificial atoms in diamond nanostructures
Kevin J. Palm, Mark Dong, D. Andrew Golter +10
A central goal in creating long-distance quantum networks and distributed quantum computing is the development of interconnected and individually controlled qubit nodes. Atom-like…
Nanophotonic waveguide chip-to-free-space beam scanning at 68 Million Spots/(smm)
Matt Saha, Y. Henry Wen, Andrew S. Greenspon +11
A seamless chip-to-world photonic interface enables wide-ranging advancements in optical ranging, display, communication, computation, imaging, and light-matter interaction. An opt…
Terahertz Light Sources by Electronic-Oscillator-Driven Second Harmonic Generation in Extreme-Confinement Cavities
Lamia Ateshian, Hyeongrak Choi, Mikkel Heuck +1
The majority of sources of coherent optical radiation rely on laser oscillators driven by population inversion. Despite their technological importance in communications, medicine,…
Metal-Optic Nanophotonic Modulators in Standard CMOS Technology
Mohamed ElKabbash, Sivan Trajtenberg-Mills, Isaac Harris +8
Integrating nanophotonics with electronics promises revolutionary applications, from LiDAR to holographic displays. Although silicon photonics is maturing, realizing active nanopho…
Quantum Logic with Interacting Bosons in 1D
Yoav Lahini, Gregory R. Steinbrecher, Adam D. Bookatz +1
We present a scheme for implementing high-fidelity quantum logic gates using the quantum walk of a few interacting bosons on a one-dimensional lattice. The gate operation is carrie…
Linewidth broadening of a quantum dot coupled to an off-resonant cavity
Arka Majumdar, Andrei Faraon, Erik Kim +4
We study the coupling between a photonic crystal cavity and an off-resonant quantum dot under resonant excitation of the cavity or the quantum dot. Linewidths of the quantum dot an…
Hardware error correction for programmable photonics
Saumil Bandyopadhyay, Ryan Hamerly, Dirk Englund
Programmable photonic circuits of reconfigurable interferometers can be used to implement arbitrary operations on optical modes, facilitating a flexible platform for accelerating t…
Deterministic fast and stable phase retrieval in multiple dimensions
Cole Brabec, Sivan Trajtenberg-Mills, Luca Daniel +1
We present the first phase retrieval algorithm guaranteed to solve the multidimensional phase retrieval problem in polynomial arithmetic complexity without prior information. The m…
Graphene calorimetric single-photon detector
Bevin Huang, Ethan G. Arnault, Woochan Jung +8
Single photon detectors (SPDs) are essential technology in quantum science, quantum network, biology, and advanced imaging. To detect the small quantum of energy carried in a photo…
Piezoelectrically actuated high-speed spatial light modulator for visible to near-infrared wavelengths
Tom Vanackere, Artur Hermans, Ian Christen +8
Advancements in light modulator technology have been driving discoveries and progress across various fields. The problem of large-scale coherent optical control of atomic quantum s…
Development of a Boston-area 50-km fiber quantum network testbed
Eric Bersin, Matthew Grein, Madison Sutula +22
Distributing quantum information between remote systems will necessitate the integration of emerging quantum components with existing communication infrastructure. This requires un…
Alignment-free photonic interconnects
Saumil Bandyopadhyay, Dirk Englund
Next generation optoelectronic systems will require the efficient transfer of optical signals between many discrete photonic components integrated onto a single substrate. While mo…
Integrated nanoplasmonic quantum interfaces for room temperature single photon sources
Frédéric Peyskens, Darrick Chang, Dirk Englund
We describe a general analytical framework of a nanoplasmonic cavity-emitter system interacting with a dielectric photonic waveguide. Taking into account emitter quenching and deph…
Spectral tuning and nanoscale localization of single color centers in silicon via controllable strain
Alessandro Buzzi, Camille Papon, Matteo Pirro +5
The development of color centers in silicon enables scalable quantum technologies by combining telecom-wavelength emission and compatibility with mature silicon fabrication. Howeve…
Performance limits due to thermal transport in graphene single-photon bolometers
Caleb Fried, B. Jordan Russell, Ethan G. Arnault +5
In high-sensitivity bolometers and calorimeters, the photon absorption often occurs at a finite distance from the temperature sensor to accommodate antennas or avoid the degradatio…
Deep Learning with Coherent VCSEL Neural Networks
Zaijun Chen, Alexander Sludds, Ronald Davis +8
Deep neural networks (DNNs) are reshaping the field of information processing. With their exponential growth challenging existing electronic hardware, optical neural networks (ONNs…
Efficient, Compact and Low Loss Thermo-Optic Phase Shifter in Silicon
Nicholas C. Harris, Yangjin Ma, Jacob Mower +4
We design a resistive heater optimized for efficient and low-loss optical phase modulation in a silicon-on-insulator (SOI) waveguide and characterize the fabricated devices. Modula…
Dynamics of Quantum Dot Photonic Crystal Lasers
Bryan Ellis, Ilya Fushman, Dirk Englund +3
Quantum dot photonic crystal membrane lasers were fabricated and the large signal modulation characteristics were studied. We find that the modulation characteristics of quantum do…
Hardware Co-Designed Optimal Control for Programmable Atomic Quantum Processors via Reinforcement Learning
Qian Ding, Dirk Englund
Developing scalable, fault-tolerant atomic quantum processors requires precise control over large arrays of optical beams. This remains a major challenge due to inherent imperfecti…
Temporally and spectrally multiplexed single photon source using quantum feedback control for scalable photonic quantum technologies
Mikkel Heuck, Mihir Pant, Dirk Englund
Current proposals for scalable photonic quantum technologies require on-demand sources of indistinguishable single photons with very high efficiency (having unheralded loss below $…
Review Article: Quantum Nanophotonics in Diamond
Tim Schröder, Sara Mouradian, Jiabao Zheng +6
The past decade has seen great advances in developing color centers in diamond for sensing, quantum information processing, and tests of quantum foundations. Increasingly, the succ…
High-Contrast Electro-Optic Modulation of a Photonic Crystal Nanocavity by Electrical Gating of Graphene
Xuetao Gan, Ren-Jye Shiue, Yuanda Gao +8
We demonstrate a high-contrast electro-optic modulation of a photonic crystal nanocavity integrated with an electrically gated monolayer graphene. A high quality (Q) factor air-slo…
Ultrahigh Resolution Spectroscopy Across the Visible to Infrared Spectrum Using Multi-Mode Interference in a Compact Tapered Fiber
Noel H. Wan, Fan Meng, Ren-Jye Shiue +3
Optical spectroscopy is a fundamental tool in numerous areas of science and technology. Much effort has focused on miniaturizing spectrometers, but thus far at the cost of high spe…
Ultrafast photon-photon interaction in a strongly coupled quantum dot-cavity system
Dirk Englund, Arka Majumdar, Michal Bajcsy +3
We study dynamics of the interaction between two weak light beams mediated by a strongly coupled quantum dot-photonic crystal cavity system. First, we perform all optical switching…
Recirculating Quantum Photonic Networks for Fast Deterministic Quantum Information Processing
Emil Grovn, Matias Bundgaard-Nielsen, Jesper Mørk +2
A fundamental challenge in photonics-based deterministic quantum information processing is to realize key transformations on time scales shorter than those of detrimental decoheren…
Machine Intelligence on Wireless Edge Networks
Sri Krishna Vadlamani, Kfir Sulimany, Zhihui Gao +2
Machine intelligence on edge devices enables low-latency processing and improved privacy, but is often limited by the energy and delay of moving and converting data. Current system…
Ax-Prover: A Deep Reasoning Agentic Framework for Theorem Proving in Mathematics and Quantum Physics
Benjamin Breen, Marco Del Tredici, Jacob McCarran +6
We present Ax-Prover, a multi-agent system for automated theorem proving in Lean that can solve problems across diverse scientific domains and operate either autonomously or collab…
Closed-Loop Electron-Beam-Induced Spectroscopy and Nanofabrication Around Individual Quantum Emitters
Jawaher Almutlaq, Kyle P. Kelley, Hyeongrak Choi +5
Color centers in diamond play a central role in the development of quantum photonic technologies, and their importance is only expected to grow in the near future. For many quantum…
Efficient Photonic Crystal Cavity-Waveguide Couplers
Andrei Faraon, Edo Waks, Dirk Englund +2
Coupling of photonic crystal (PC) linear three-hole defect cavities (L3) to PC waveguides is theoretically and experimentally investigated. The systems are designed to increase the…
Programmable photonic integrated meshes for modular generation of optical entanglement links
Mark Dong, Matthew Zimmermann, David Heim +9
Large-scale generation of quantum entanglement between individually controllable qubits is at the core of quantum computing, communications, and sensing. Modular architectures of r…
Variational Quantum Unsampling on a Quantum Photonic Processor
Jacques Carolan, Masoud Mohseni, Jonathan P. Olson +8
Quantum algorithms for Noisy Intermediate-Scale Quantum (NISQ) machines have recently emerged as new promising routes towards demonstrating near-term quantum advantage (or supremac…
High-Fidelity Control of a Strongly Coupled Electro-Nuclear Spin-Photon Interface
Isaac B. W. Harris, Ian Christen, Sofia M. Patomäki +13
Long distance quantum networking requires combining efficient spin-photon interfaces with long-lived local memories. Group-IV color centers in diamond (SiV, GeV, and SnV) are promi…
Asymptotically Fault-Tolerant Programmable Photonics
Ryan Hamerly, Saumil Bandyopadhyay, Dirk Englund
Component errors limit the scaling of programmable coherent photonic circuits. These errors arise because the standard tunable photonic coupler -- the Mach-Zehnder interferometer (…
Piezo-optomechanical cantilever modulators for VLSI visible photonics
Mark Dong, David Heim, Alex Witte +8
Visible-wavelength very large-scale integration (VLSI) photonic circuits have potential to play important roles in quantum information and sensing technologies. The realization of…
Light trapping in a 30-nm organic photovoltaic cell for efficient carrier collection and light absorption
Cheng-Chia Tsai, Richard R. Grote, Ashish Banerjee +2
We describe surface patterning strategies that permit high photon-collection efficiency together with high carrier-collection efficiency in an ultra-thin planar heterojunction orga…
A quantum photonics model for non-classical light generation using integrated nanoplasmonic cavity-emitter systems
Frédéric Peyskens, Dirk Englund
The implementation of non-classical light sources is becoming increasingly important for various quantum applications. A particularly interesting approach is to integrate such func…
Generation of Ensembles of Individually Resolvable Nitrogen Vacancies Using Nanometer-Scale Apertures in Ultrahigh-Aspect Ratio Planar Implantation Masks
Igal Bayn, Edward H. Chen, Matthew E. Trusheim +9
A central challenge in developing magnetically coupled quantum registers in diamond is the fabrication of nitrogen vacancy (NV) centers with localization below ~20 nm to enable fas…
A fully packaged multi-channel cryogenic module for optical quantum memories
David J. Starling, Katia Shtyrkova, Ian Christen +13
Realizing a quantum network will require long-lived quantum memories with optical interfaces incorporated into a scalable architecture. Color centers quantum emitters in diamond ha…
High-rate field demonstration of large-alphabet quantum key distribution
Catherine Lee, Darius Bunandar, Zheshen Zhang +6
Quantum key distribution (QKD) exploits the quantum nature of light to share provably secure keys, allowing secure communication in the presence of an eavesdropper. The first QKD s…
Fundamental thermal noise limits for optical microcavities
Christopher Panuski, Dirk Englund, Ryan Hamerly
We present a joint theoretical and experimental characterization of thermo-refractive noise in high quality factor (), small mode volume () optical microcavities. Analogous t…
Ultra Fast Nonlinear Optical Tuning of Photonic Crystal Cavities
Ilya Fushman, Edo Waks, Dirk Englund +3
We demonstrate fast (up to 20 GHz), low power (5 ) modulation of photonic crystal (PC) cavities in GaAs containing InAs quantum dots. Rapid modulation through blue-shifting of…