465 citations · 2.9k across the 21 of their papers we have counts for
22 papers
Engineering phonon-phonon interactions in multimode circuit quantum acousto-dynamics
Uwe von Lüpke, Ines C. Rodrigues, Yu Yang +2
In recent years, remarkable progress has been made towards encoding and processing quantum information in the large Hilbert space of bosonic modes. Mechanical resonators are of gre…
Unified simulation methods for quantum acoustic devices
Hugo Banderier, Maxwell Drimmer, Yiwen Chu
In circuit quantum acoustodynamics (cQAD), superconducting circuits are combined with acoustic resonators to create and control non-classical states of mechanical motion. Simulatin…
Schrödinger cat states of a 16-microgram mechanical oscillator
Marius Bild, Matteo Fadel, Yu Yang +4
The superposition principle is one of the most fundamental principles of quantum mechanics. According to the Schrödinger equation, a physical system can be in any linear combinatio…
Macroscopic quantum test with bulk acoustic wave resonators
Björn Schrinski, Yu Yang, Uwe von Lüpke +5
Recently, solid-state mechanical resonators have become a platform for demonstrating non-classical behavior of systems involving a truly macroscopic number of particles. Here, we p…
Simultaneous Brillouin and piezoelectric coupling to a high-frequency bulk acoustic resonator
Taekwan Yoon, David Mason, Vijay Jain +7
Bulk acoustic resonators support robust, long-lived mechanical modes, capable of coupling to various quantum systems. In separate works, such devices have achieved strong coupling…
Parity measurement in the strong dispersive regime of circuit quantum acoustodynamics
Uwe von Lüpke, Yu Yang, Marius Bild +3
Mechanical resonators are emerging as an important new platform for quantum science and technologies. A large number of proposals for using them to store, process, and transduce qu…
A perspective on hybrid quantum opto- and electromechanical systems
Yiwen Chu, Simon Gröblacher
Quantum opto- and electromechanical systems interface mechanical motion with the electromagnetic modes of optical resonators and microwave circuits. The capabilities and promise of…
Hardware-efficient quantum random access memory with hybrid quantum acoustic systems
Connor T. Hann, Chang-Ling Zou, Yaxing Zhang +4
Hybrid quantum systems in which acoustic resonators couple to superconducting qubits are promising quantum information platforms. High quality factors and small mode volumes make a…
Ultra-high-Q phononic resonators on-chip at cryogenic temperatures
Prashanta Kharel, Yiwen Chu, Michael Power +3
Long-lived, high-frequency phonons are valuable for applications ranging from optomechanics to emerging quantum systems. For scientific as well as technological impact, we seek hig…
Creation and control of multi-phonon Fock states in a bulk acoustic wave resonator
Yiwen Chu, Prashanta Kharel, Taekwan Yoon +3
Quantum states of mechanical motion can be important resources for quantum information, metrology, and studies of fundamental physics. Recent demonstrations of superconducting qubi…
Quantum acoustics with superconducting qubits
Yiwen Chu, Prashanta Kharel, William H. Renninger +4
The ability to engineer and manipulate different types of quantum mechanical objects allows us to take advantage of their unique properties and create useful hybrid technologies. T…
Micromachined integrated quantum circuit containing a superconducting qubit
T. Brecht, Y. Chu, C. Axline +6
We present a device demonstrating a lithographically patterned transmon integrated with a micromachined cavity resonator. Our two-cavity, one-qubit device is a multilayer microwave…
Suspending superconducting qubits by silicon micromachining
Y. Chu, C. Axline, C. Wang +4
We present a method for relieving aluminum 3D transmon qubits from a silicon substrate using micromachining. Our technique is a high yield, one-step deep reactive ion etch that req…
A coaxial line architecture for integrating and scaling 3D cQED systems
Christopher Axline, Matthew Reagor, Reinier W. Heeres +7
Numerous loss mechanisms can limit coherence and scalability of planar and 3D-based circuit quantum electrodynamics (cQED) devices, particularly due to their packaging. The low los…
Surface participation and dielectric loss in superconducting qubits
Chen Wang, Christopher Axline, Yvonne Y. Gao +4
We study the energy relaxation times () of superconducting transmon qubits in 3D cavities as a function of dielectric participation ratios of material surfaces. This surface p…
Multilayer microwave integrated quantum circuits for scalable quantum computing
T. Brecht, W. Pfaff, C. Wang +4
As experimental quantum information processing (QIP) rapidly advances, an emerging challenge is to design a scalable architecture that combines various quantum elements into a comp…
Demonstration of superconducting micromachined cavities
T. Brecht, M. Reagor, Y. Chu +5
Superconducting enclosures will be key components of scalable quantum computing devices based on circuit quantum electrodynamics (cQED). Within a densely integrated device, they ca…
Quantum optics with nitrogen-vacancy centers in diamond
Yiwen Chu, Mikhail D. Lukin
We review the electronic level structure of the nitrogen-vacancy in diamond and some common experimental techniques to study its optical properties at low temperatures. We then sum…
All optical control of a single electron spin in diamond
Yiwen Chu, Matthew Markham, Daniel J. Twitchen +1
Precise coherent control of the individual electronic spins associated with atom-like impurities in the solid state is essential for applications in quantum information processing…
High-Q optical nanocavities in bulk single-crystal diamond
Michael J. Burek, Yiwen Chu, Madelaine S. Z. Liddy +7
Single-crystal diamond, with its unique optical, mechanical and thermal properties, has emerged as a promising material with applications in classical and quantum optics. However,…
Quantum interference of single photons from remote nitrogen-vacancy centers in diamond
Alp Sipahigil, Michael L. Goldman, Emre Togan +6
We demonstrate quantum interference between indistinguishable photons emitted by two nitrogen-vacancy (NV) centers in distinct diamond samples separated by two meters. Macroscopic…
Properties of nitrogen-vacancy centers in diamond: group theoretic approach
Jeronimo Maze, Adam Gali, Emre Togan +4
We present a procedure that makes use of group theory to analyze and predict the main properties of the negatively charged nitrogen-vacancy (NV) center in diamond. We focus on the…