456 citations · 3.2k across the 76 of their papers we have counts for
76 papers
Scheme for measuring topological transitions in a continuous variable system
Bi-Yao Wang, Hao-Long Zhang, Shou-Bang Yang +3
We propose a scheme for measuring topological properties in a two-photon-driven Kerr-nonlinear resonator (KNR) subjected to a single-photon modulation. The topological properties a…
Critical sensing with a single bosonic mode without boson-boson interactions
Ken Chen, Jia-Hao Lü, Xin Zhu +4
Critical phenomena of quantum systems are useful for enhancement of quantum sensing. However, experimental realizations of criticality enhancement have been confined to very few sy…
Criticality-Enhanced Quantum Sensing in the Anisotropic Quantum Rabi Model
Xin Zhu, Jia-Hao Lü, Wen Ning +4
Quantum systems that undergo quantum phase transitions exhibit divergent susceptibility and can be exploited as probes to estimate physical parameters. We generalize the dynamic fr…
Critical quantum sensing based on the Jaynes-Cummings model with a squeezing drive
Jia-Hao Lü, Wen Ning, Xin Zhu +4
Quantum sensing improves the accuracy of measurements of relevant parameters by exploiting the unique properties of quantum systems. The divergent susceptibility of physical system…
Beating the break-even point with a discrete-variable-encoded logical qubit
Zhongchu Ni, Sai Li, Xiaowei Deng +12
Quantum error correction (QEC) aims to protect logical qubits from noises by utilizing the redundancy of a large Hilbert space, where an error, once it occurs, can be detected and…
Exceptional entanglement phenomena: non-Hermiticity meeting non-classicality
Pei-Rong Han, Fan Wu, Xin-Jie Huang +11
Non-Hermitian (NH) extension of quantum-mechanical Hamiltonians represents one of the most significant advancements in physics. During the past two decades, numerous captivating NH…
Sudden change of the photon output field marks phase transitions in the quantum Rabi model
Ye-Hong Chen, Yuan Qiu, Adam Miranowicz +6
The experimental observation of quantum phase transitions predicted by the quantum Rabi model in quantum critical systems is usually challenging due to the lack of signature experi…
Observation of a superradiant phase transition with emergent cat states
Ri-Hua Zheng, Wen Ning, Ye-Hong Chen +15
Superradiant phase transitions (SPTs) are important for understanding light-matter interactions at the quantum level, and play a central role in criticality-enhanced quantum sensin…
Entanglement-interference complementarity and experimental demonstration in a superconducting circuit
Xin-Jie Huang, Pei-Rong Han, Wen Ning +12
Quantum entanglement between an interfering particle and a detector for acquiring the which-path information plays a central role for enforcing Bohr's complementarity principle. Ho…
Composite pulses for high fidelity population transfer in three-level systems
Zhi-Cheng Shi, Cheng Zhang, Du Ran +5
In this work, we propose a composite pulses scheme by modulating phases to achieve high fidelity population transfer in three-level systems. To circumvent the obstacle that not eno…
Nonreciprocal light transmission via optomechanical parametric interactions
Yan-Ting Lan, Wan-Jun Su, Huaizhi Wu +2
Nonreciprocal transmission of optical or microwave signals is indispensable in various applications involving sensitive measurements. In this paper, we study optomechanically induc…
Nonadiabatic geometric quantum computation with cat qubits via invariant-based reverse engineering
Yi-Hao Kang, Ye-Hong Chen, Xin Wang +5
We propose a protocol to realize nonadiabatic geometric quantum computation of small-amplitude Schrödinger cat qubits via invariant-based reverse engineering. We consider a system…
Demonstration of dynamical control of three-level open systems with a superconducting qutrit
Ri-Hua Zheng, Wen Ning, Zhen-Biao Yang +2
We propose a method for the dynamical control in three-level open systems and realize it in the experiment with a superconducting qutrit. Our work demonstrates that in the Markovia…
Robust population inversion in three-level systems by composite pulses
Cheng Zhang, Yang Liu, Zhi-Cheng Shi +3
In this work, we exploit the idea of composite pulses to achieve robust population inversion in a three-level quantum system. The scheme is based on the modulation of the coupling…
Robust single-qubit gates by composite pulses in three-level systems
Zhi-Cheng Shi, Hai-Ning Wu, Li-Tuo Shen +3
Composite pulses are an efficient tool for robust quantum control. In this work, we derive the form of the composite pulse sequence to implement robust single-qubit gates in a thre…
Demonstration of a non-Abelian geometric controlled-Not gate in a superconducting circuit
Kai Xu, Wen Ning, Xin-Jie Huang +6
Holonomies, arising from non-Abelian geometric transformations of quantum states in Hilbert space, offer a promising way for quantum computation. These holonomies are not commutabl…
Manipulating complex hybrid entanglement and testing multipartite Bell inequalities in a superconducting circuit
Yuwei Ma, Xiaoxuan Pan, Weizhou Cai +9
Quantum correlations in observables of multiple systems not only are of fundamental interest, but also play a key role in quantum information processing. As a signature of these co…
Experimental demonstration of entanglement-enabled universal quantum cloning in a circuit
Zhen-Biao Yang, Pei-Rong Han, Xin-Jie Huang +6
No-cloning theorem forbids perfect cloning of an unknown quantum state. A universal quantum cloning machine (UQCM), capable of producing two copies of any input qubit with the opti…
Manifestation of classical nonlinear dynamics in optomechanical entanglement with a parametric amplifier
Chang-Sheng Hu, Li-Tuo Shen, Zhen-Biao Yang +3
Cavity optomechanical system involving an optical parametric amplifier (OPA) can exhibit rich classical and quantum dynamical behaviors. By simply modulating the frequency of the l…
Generation and stabilization of entangled coherent states for the vibrational modes of a trapped ion
Zhi-Rong Zhong, Xin-Jie Huang, Zhen-Biao Yang +2
We propose a scheme for preparation of entangled coherent states for the motion of an ion in a two-dimensional anisotropic trap. In the scheme, the ion is driven by four laser beam…
Quantum nonlocality for entanglement of quasiclassical states
Zhi-Rong Zhong, Jian-Qi Sheng, Li-Hua Lin +1
Entanglement of quasiclassical (coherent) states of two harmonic oscillators leads to striking quantum effects and is useful for quantum technologies. These effects and application…
Nearly maximal violation of the Mermin-Klyshko inequality with multimode entangled coherent states
Jian-Qi Sheng, Li-Hua Lin, Zhi-Rong Zhong +1
Entangled coherent states for multiple bosonic modes, also referred to as multimode cat states, not only are of fundamental interest, but also have practical applications. The nonc…
Deterministic entanglement swapping in a superconducting circuit
Wen Ning, Xin-Jie Huang, Pei-Rong Han +8
Entanglement swapping, the process to entangle two particles without coupling them in any way, is one of the most striking manifestations of the quantum-mechanical nonlocal charact…
Dissipative entanglement preparation via Rydberg antiblockade and Lyapunov control
Zong-Xing Ding, Chang-Sheng Hu, Li-Tuo Shen +3
Preparation of entangled steady states via dissipation and pumping in Rydberg atoms has been recently found to be useful for quantum information processing. The driven-dissipative…