214 citations · 1.4k across the 27 of their papers we have counts for
29 papers
Local Clifford equivalence to CSS codes: Polynomial-time classification and conversion
Mingyuan Wang, Stefan Krastanov
Calderbank--Shor--Steane (CSS) codes support decoding and fault-tolerant logical operations through separate pure and pure stabilizer checks. Generator choices and single-q…
PPVM: A Circuit Simulation Framework for Digital Twins of Quantum Processors
Xiu-Zhe Luo, David Plankensteiner, Kai-Hsin Wu +12
Quantum computers are approaching the early fault-tolerant regime. Verifying the next generation of quantum hardware requires joint emulation of the quantum processor, hardware noi…
WaveguideQED.jl: An Efficient Framework for Simulating Non-Markovian Waveguide Quantum Electrodynamics
Matias Bundgaard-Nielsen, Dirk Englund, Mikkel Heuck +1
In this paper, we introduce a numerical framework designed to solve problems within the emerging field of Waveguide Quantum Electrodynamics (WQED). The framework is based on collis…
Faster-than-Clifford Simulations of Entanglement Purification Circuits and Their Full-stack Optimization
Vaishnavi L. Addala, Shu Ge, Stefan Krastanov
Quantum Entanglement is a fundamentally important resource in Quantum Information Science; however, generating it in practice is plagued by noise and decoherence, limiting its util…
Quantum theory of single-photon nonlinearities generated by ensembles of emitters
Kurt Jacobs, Stefan Krastanov, Mikkel Heuck +1
The achievement of sufficiently fast interactions between two optical fields at the few-photon level would provide a key enabler for a broad range of quantum technologies. One crit…
Near-term to distillation protocols using graph codes
Kenneth Goodenough, Sébastian de Bone, Vaishnavi L. Addala +4
Noisy hardware forms one of the main hurdles to the realization of a near-term quantum internet. Distillation protocols allows one to overcome this noise at the cost of an increase…
Multiplexed control of spin quantum memories in a photonic circuit
D. Andrew Golter, Genevieve Clark, Tareq El Dandachi +11
A central goal in many quantum information processing applications is a network of quantum memories that can be entangled with each other while being individually controlled and me…
Single chip photonic deep neural network with accelerated training
Saumil Bandyopadhyay, Alexander Sludds, Stefan Krastanov +6
As deep neural networks (DNNs) revolutionize machine learning, energy consumption and throughput are emerging as fundamental limitations of CMOS electronics. This has motivated a s…
All-Photonic Artificial Neural Network Processor Via Non-linear Optics
Jasvith Raj Basani, Mikkel Heuck, Dirk R. Englund +1
Optics and photonics has recently captured interest as a platform to accelerate linear matrix processing, that has been deemed as a bottleneck in traditional digital electronic arc…
Spin-Phonon-Photon Strong Coupling in a Piezomechanical Nanocavity
Hamza Raniwala, Stefan Krastanov, Lisa Hackett +3
We introduce a hybrid tripartite quantum system for strong coupling between a semiconductor spin, a mechanical phonon, and a microwave photon. Consisting of a piezoelectric resonat…
A spin-optomechanical quantum interface enabled by an ultrasmall mechanical and optical mode volume cavity
Hamza Raniwala, Pratyush Anand, Stefan Krastanov +3
We propose a coherent mechanical interface between defect centers in diamond and telecom optical modes. Combining recent developments in spin-mechanical devices and optomechanical…
Controlled-Phase Gate by Dynamic Coupling of Photons to a Two-Level Emitter
Stefan Krastanov, Kurt Jacobs, Gerald Gilbert +2
We propose an architecture for achieving high-fidelity deterministic quantum logic gates on dual-rail encoded photonic qubits by letting photons interact with a two-level emitter (…
Error rate reduction of single-qubit gates via noise-aware decomposition into native gates
Thomas J. Maldonado, Johannes Flick, Stefan Krastanov +1
In the current era of Noisy Intermediate-Scale Quantum (NISQ) technology, the practical use of quantum computers remains inhibited by our inability to aptly decouple qubits from th…
Optically-Heralded Entanglement of Superconducting Systems in Quantum Networks
Stefan Krastanov, Hamza Raniwala, Jeffrey Holzgrafe +4
Networking superconducting quantum computers is a longstanding challenge in quantum science. The typical approach has been to cascade transducers: converting to optical frequencies…
Purification and Entanglement Routing on Quantum Networks
Michelle Victora, Stefan Krastanov, Alexander Sanchez de la Cerda +2
We present an approach to purification and entanglement routing on complex quantum network architectures, that is, how a quantum network equipped with imperfect channel fidelities…
Heterogeneous Multipartite Entanglement Purification for Size-Constrained Quantum Devices
Stefan Krastanov, Alexander Sanchez de la Cerda, Prineha Narang
The entanglement resource required for quantum information processing comes in a variety of forms, from Bell states to multipartite GHZ states or cluster states. Purifying these re…
Quantum coding with low-depth random circuits
Michael J. Gullans, Stefan Krastanov, David A. Huse +2
Random quantum circuits have played a central role in establishing the computational advantages of near-term quantum computers over their conventional counterparts. Here, we use en…
Unboxing Quantum Black Box Models: Learning Non-Markovian Dynamics
Stefan Krastanov, Kade Head-Marsden, Sisi Zhou +3
Characterizing the memory properties of the environment has become critical for the high-fidelity control of qubits and other advanced quantum systems. However, current non-Markovi…
Capturing Non-Markovian Dynamics on Near-Term Quantum Computers
Kade Head-Marsden, Stefan Krastanov, David A. Mazziotti +1
With the rapid progress in quantum hardware, there has been an increased interest in new quantum algorithms to describe complex many-body systems searching for the still-elusive go…
Efficient cavity control with SNAP gates
Thomas Fösel, Stefan Krastanov, Florian Marquardt +1
Microwave cavities coupled to superconducting qubits have been demonstrated to be a promising platform for quantum information processing. A major challenge in this setup is to rea…
Room-Temperature Photonic Logical Qubits via Second-Order Nonlinearities
Stefan Krastanov, Mikkel Heuck, Jeffrey H. Shapiro +3
Recent progress in nonlinear optical materials and microresonators has brought quantum computing with bulk optical nonlinearities into the realm of possibility. This platform is of…
Stochastic Estimation of Dynamical Variables
Stefan Krastanov, Sisi Zhou, Steven T. Flammia +1
Estimating the parameters governing the dynamics of a system is a prerequisite for its optimal control. We present a simple but powerful method that we call STEADY, for STochastic…
Optimized Entanglement Purification
Stefan Krastanov, Victor V. Albert, Liang Jiang
We investigate novel protocols for entanglement purification of qubit Bell pairs. Employing genetic algorithms for the design of the purification circuit, we obtain shorter circuit…
Deep Neural Network Probabilistic Decoder for Stabilizer Codes
Stefan Krastanov, Liang Jiang
Neural networks can efficiently encode the probability distribution of errors in an error correcting code. Moreover, these distributions can be conditioned on the syndromes of the…