170 citations · 755 across the 19 of their papers we have counts for
19 papers
Extracting Electromagnetic Bare Mode Couplings in Large Superconducting Quantum Processors
Reza Molavi, Ebrahim Forati, Yaxing Zhang +9
High-fidelity control of superconducting quantum processors requires accurate characterization of electromagnetic coupling strengths among the device's constituent elements. Accura…
Nonergodic measurements of qubit frequency noise
Filip Wudarski, Yaxing Zhang, M. I. Dykman
Slow fluctuations of a qubit frequency are one of the major problems faced by quantum computers. To understand their origin it is necessary to go beyond the analysis of their spect…
High-fidelity parametric beamsplitting with a parity-protected converter
Yao Lu, Aniket Maiti, John W. O. Garmon +6
Fast, high-fidelity operations between microwave resonators are an important tool for bosonic quantum computation and simulation with superconducting circuits. An attractive approa…
A high on-off ratio beamsplitter interaction for gates on bosonically encoded qubits
Benjamin J. Chapman, Stijn J. de Graaf, Sophia H. Xue +12
Encoding a qubit in a high quality superconducting microwave cavity offers the opportunity to perform the first layer of error correction in a single device, but presents a challen…
Characterizing low-frequency qubit noise
Filip Wudarski, Yaxing Zhang, Alexander Korotkov +2
Fluctuations of the qubit frequencies are one of the major problems to overcome on the way to scalable quantum computers. Of particular importance are fluctuations with the correla…
Engineering Strong Beamsplitter Interaction between Bosonic Modes via Quantum Optimal Control Theory
Daniel Basilewitsch, Yaxing Zhang, S. M. Girvin +1
In continuous-variable quantum computing with qubits encoded in the infinite-dimensional Hilbert space of bosonic modes, it is a difficult task to realize strong and on-demand inte…
Drive-induced nonlinearities of cavity modes coupled to a transmon ancilla
Yaxing Zhang, Jacob C. Curtis, Christopher S. Wang +2
High-Q microwave cavity modes coupled to transmon ancillas provide a hardware-efficient platform for quantum computing. Due to their coupling, the cavity modes inherit finite nonli…
Error-detected state transfer and entanglement in a superconducting quantum network
Luke D. Burkhart, James Teoh, Yaxing Zhang +6
Modular networks are a promising paradigm for increasingly complex quantum devices based on the ability to transfer qubits and generate entanglement between modules. These tasks re…
Nonlocal random walk over Floquet states of a dissipative nonlinear oscillator
Yaxing Zhang, M. I. Dykman
We study transitions between the Floquet states of a periodically driven oscillator caused by the coupling of the oscillator to a thermal reservoir. The analysis refers to the osci…
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…
Quantum state preparation for coupled period tripling oscillators
Niels Lörch, Yaxing Zhang, Christoph Bruder +1
We investigate the quantum transition to a correlated state of coupled oscillators in the regime where they display period tripling in response to a drive at triple the eigenfreque…
Engineering bilinear mode coupling in circuit QED: Theory and experiment
Yaxing Zhang, Brian J. Lester, Yvonne Y. Gao +3
Photonic states of superconducting microwave cavities controlled by transmon ancillas provide a platform for encoding and manipulating quantum information. A key challenge in scali…
Interaction-induced time-symmetry breaking in driven quantum oscillators
M. I. Dykman, Christoph Bruder, Niels Lörch +1
We study parametrically driven quantum oscillators and show that, even for weak coupling between the oscillators, they can exhibit various many-body states with broken time-transla…
Programmable interference between two microwave quantum memories
Yvonne Y. Gao, B. J. Lester, Yaxing Zhang +6
Interference experiments provide a simple yet powerful tool to unravel fundamental features of quantum physics. Here we engineer an RF-driven, time-dependent bilinear coupling that…
Preparing quasienergy states on demand: A parametric oscillator
Yaxing Zhang, M. I. Dykman
We study a nonlinear oscillator, which is parametrically driven at a frequency close to twice its eigenfrequency. By judiciously choosing the frequency detuning and linearly increa…
Multiple-period Floquet states and time-translation symmetry breaking in quantum oscillators
Yaxing Zhang, J. Gosner, S. M. Girvin +2
We study the breaking of the discrete time-translation symmetry in small periodically driven quantum systems. Such systems are intermediate between large closed systems and small d…
Spectral effects of dispersive mode coupling in driven mesoscopic systems
Yaxing Zhang, M. I. Dykman
Nanomechanical and other mesoscopic vibrational systems typically have several nonlinearly coupled modes with different frequencies and with long lifetime. We consider the power sp…
Fluctuation spectra of weakly driven nonlinear systems
Yaxing Zhang, Yukihiro Tadokoro, M. I. Dykman
We show that in periodically driven systems, along with the delta-peak at the driving frequency, the spectral density of fluctuations displays extra features. These can be peaks or…
Interplay of driving and frequency noise in the spectra of vibrational systems
Yaxing Zhang, J. Moser, A. Bachtold +1
We study the spectral effect of the fluctuations of the vibration frequency. Such fluctuations play a major role in nanomechanical and other mesoscopic vibrational systems. We find…