376 citations · 3.1k across the 57 of their papers we have counts for
41 papers · 1 filter
Dispersive Non-reciprocity between a Qubit and a Cavity
Ying-Ying Wang, Yu-Xin Wang, Sean van Geldern +3
The dispersive interaction between a qubit and a cavity is ubiquitous in circuit and cavity quantum electrodynamics. It describes the frequency shift of one quantum mode in respons…
Experimental Realization and Characterization of Stabilized Pair Coherent States
Jeffrey M. Gertler, Sean van Geldern, Shruti Shirol +2
The pair coherent state (PCS) is a theoretical extension of the Glauber coherent state to two harmonic oscillators. It is an interesting class of non-Gaussian continuous-variable e…
Demonstration of the Two-Fluxonium Cross-Resonance Gate
Ebru Dogan, Dario Rosenstock, Loïck Le Guevel +7
The superconducting fluxonium qubit has a great potential for high-fidelity quantum gates with its long coherence times and strong anharmonicity at the half flux quantum sweet spot…
Quantum nonreciprocal interactions via dissipative gauge symmetry
Yu-Xin Wang, Chen Wang, Aashish A. Clerk
One-way nonreciprocal interactions between two quantum systems are typically described by a cascaded quantum master equation, and rely on an effective breaking of time-reversal sym…
CNOT gates for fluxonium qubits via selective darkening of transitions
Konstantin N. Nesterov, Chen Wang, Vladimir E. Manucharyan +1
We analyze the cross-resonance effect for fluxonium circuits and investigate a two-qubit gate scheme based on selective darkening of a transition. In this approach, two microwave p…
Implication of giant photon bunching on quantum phase transition in the dissipative anisotropic quantum Rabi model
Tian Ye, Chen Wang, Qing-Hu Chen
We investigate the quantum phase transition in the dissipative anisotropic quantum Rabi model in the framework of quantum dressed master equation. From perspectives of both numeric…
Quantum phase transition in the one-dimensional Dicke-Hubbard model with coupled qubits
Shu He, Li-Wei Duan, Yan-Zhi Wang +2
We study the ground state phase diagram of a one-dimensional two qubits Dicke-Hubbard model with XY qubit-qubit interaction. We use a numerical method combing the cluster mean-fiel…
Tuning nonequilibrium heat current and two-photon statistics via composite qubit-resonator interaction
Zhe-Huan Chen, Han-Xin Che, Zhe-Kai Chen +2
Quantum thermal transport and two-photon statistics serve as two representative nonequilibrium features in circuit quantum electrodynamics systems. Here, we investigate quantum hea…
Cycle Flux Ranking of Network Analysis in Quantum Thermal Device
Luqin Wang, Zi Wang, Chen Wang +1
Manipulating quantum thermal transport relies on uncovering the principle working cycles of quantum devices. Here, we apply the cycle flux ranking of network analysis to nonequilib…
Nonequilibrium thermal transport and photon squeezing in a quadratic qubit-resonator system
Chen Wang, Hua Chen, Jie-Qiao Liao
We investigate steady-state thermal transport and photon statistics in a nonequilibrium hybrid quantum system, in which a qubit is longitudinally and quadratically coupled to an op…
Quantum phase transition of light in the dissipative Rabi-Hubbard lattice: A dressed-master-equation perspective
Tian Ye, Chen Wang, Qing-Hu Chen
In this work, we investigate the quantum phase transition of light in the dissipative Rabi-Hubbard lattice under the framework of the mean-field theory and quantum dressed master e…
A low-loss ferrite circulator as a tunable chiral quantum system
Ying-Ying Wang, Sean van Geldern, Thomas Connolly +5
Ferrite microwave circulators allow one to control the directional flow of microwave signals and noise, and thus play a crucial role in present-day superconducting quantum technolo…
A practical guide for building superconducting quantum devices
Yvonne Y. Gao, M. Adriaan Rol, Steven Touzard +1
Quantum computing offers a powerful new paradigm of information processing that has the potential to transform a wide range of industries. In the pursuit of the tantalizing promise…
Arbitrary controlled-phase gate on fluxonium qubits using differential ac-Stark shifts
Haonan Xiong, Quentin Ficheux, Aaron Somoroff +7
Large scale quantum computing motivates the invention of two-qubit gate schemes that not only maximize the gate fidelity but also draw minimal resources. In the case of superconduc…
Protecting a Bosonic Qubit with Autonomous Quantum Error Correction
Jeffrey M. Gertler, Brian Baker, Juliang Li +3
To build a universal quantum computer from fragile physical qubits, effective implementation of quantum error correction (QEC) is an essential requirement and a central challenge.…
Managing quantum heat transfer in nonequilibrium qubit-phonon hybrid system
Chen Wang, Lu-Qin Wang, Jie Ren
We investigate quantum heat transfer and thermal management in the nonequilibrium qubit-phonon hybrid system by applying the quantum master equation embedded with phononic coherent…
A polaron theory of quantum thermal transistor in nonequilibrium three-level systems
Chen Wang, Dazhi Xu
We investigate the quantum thermal transistor effect in nonequilibrium three-level systems by applying the polaron transformed Redfield equation combined with full counting statist…
Two-photon statistics of nonclassical radiation in the dissipative finite-size Dicke model
Heguang Xu, Chen Wang, Xianlong Gao
The nonclassical feature of photons in the open finite-size Dicke model is investigated via the two-photon correlation function. The quantum dressed master equation combined with t…
Quantum Zeno effect in the multimode quantum Rabi model
Shu He, Chen Wang, Xue-Zao Ren +2
We study the quantum Zeno effect (QZE) and quantum anti-Zeno effect (QAZE) of the multimode quantum Rabi model(MQRM). We derive an analytic expression for the decay rate of the sur…
Unifying quantum heat transfer and superradiant signature in a nonequilibrium collective-qubit system: a polaron-transformed Redfield approach
Xu-Min Chen, Chen Wang
We investigate full counting statistics of quantum heat transfer in a collective-qubit system, constructed by multi-qubits interacting with two thermal baths. The nonequilibrium po…
Numerical Approach to the Evolution of the Spin-boson Systems and its Application on the Buck-Sukumar Model
Xueying Liu, Xuezao Ren, Chen Wang +2
We present a systematic numerical iteration approach to study the evolution properties of the spin-boson systems, which works well in whole coupling regime. This approach involves…
Autonomous Quantum State Transfer by Dissipation Engineering
Chen Wang, Jeffrey M. Gertler
Quantum state transfer from an information-carrying qubit to a receiving qubit is ubiquitous for quantum information technology. In a closed quantum system, this task requires prec…
Microwave-Activated Controlled-Z Gate for Fixed-Frequency Fluxonium Qubits
Konstantin N. Nesterov, Ivan V. Pechenezhskiy, Chen Wang +2
The superconducting fluxonium circuit is an artificial atom with a strongly anharmonic spectrum: when biased at a half flux quantum, the lowest qubit transition is an order of magn…
Zeno effect of the open quantum system in the presence of 1/f noise
Shu He, Chen Wang, Li-Wei Duan +1
We study the quantum Zeno effect (QZE) and quantum anti-Zeno effect (QAZE) in a two-level system(TLS) interacting with an environment owning 1/f noise. Using a numerically exact me…