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学者姓名：夏岩
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Abstract ：
We propose a method to realize dynamical phonon blockade in a hybrid spin-mechanical system. Under the weak excitation limit, we demonstrate that by simply controlling the external pump field, antibunching is enhanced in the strong coupling regime and can also be induced in the weak coupling regime. Additionally, we conduct a comprehensive analysis of the proposed scheme and assess the impact of relevant parameters on phonon blockade. Through further optimization of the system using differential evolution algorithms, we achieve a sub-Poissonian phonon source with high purity and strong single-phonon statistics. The results show that the dynamic scheme allows the system to achieve quantum effects at the single-phonon level over a broad parameter range, which improves its robustness. This mechanism also regulates the time interval between consecutive emissions, reducing the requirements for time resolution. Meanwhile, the time window for quantum information is sufficiently broad, providing a practical method for generating single-phonon sources. © 2025 American Physical Society.
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| GB/T 7714 | Geng, Zhuang , Jiang, Yong-Yuan , Xia, Yan et al. Dynamical phonon blockade with a high time resolution in a hybrid system [J]. | Physical Review A , 2025 , 111 (5) . |
| MLA | Geng, Zhuang et al. "Dynamical phonon blockade with a high time resolution in a hybrid system" . | Physical Review A 111 . 5 (2025) . |
| APA | Geng, Zhuang , Jiang, Yong-Yuan , Xia, Yan , Song, Jie . Dynamical phonon blockade with a high time resolution in a hybrid system . | Physical Review A , 2025 , 111 (5) . |
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In this paper, we study the Schr & ouml;dinger cat state transfer in a quantum optical version of Newton's cradle in a non-Markovian environment. Based on a non-Markovian master equation, we show that the cat state can be transferred purely through the memory effect of the nonMarkovian common environment, even without any direct couplings between neighbor cavities. The mechanism of the environment-induced cat state transfer is analyzed both analytically and numerically to demonstrate that the transfer is a unique phenomenon in a non-Markovian regime. From this example, the non-Markovian environment is shown to be qualitatively different from the Markovian environment, reflected by the finite versus zero residue coherence. Besides, we also show the influence of environmental parameters is crucial for the transfer. We hope the cat state transfer studied in this work may shed more light on the fundamental difference between non-Markovian and Markovian environments. (c) 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Zhao, Xinyu , Xia, Yan . Non-Markovian environment induced Schrödinger cat state transfer in an optical Newton's cradle [J]. | OPTICS EXPRESS , 2025 , 33 (1) : 619-638 . |
| MLA | Zhao, Xinyu et al. "Non-Markovian environment induced Schrödinger cat state transfer in an optical Newton's cradle" . | OPTICS EXPRESS 33 . 1 (2025) : 619-638 . |
| APA | Zhao, Xinyu , Xia, Yan . Non-Markovian environment induced Schrödinger cat state transfer in an optical Newton's cradle . | OPTICS EXPRESS , 2025 , 33 (1) , 619-638 . |
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In this study, a one-step scheme is proposed to implement time-optimal three-qubit nonadiabatic holonomic gates using unconventional Rydberg pumping mechanism. The system dynamics of three Rydberg atoms are investigated in the regime of dipole-dipole interaction, which may provide relatively strong interaction strengths. By analyzing the system dynamics of three atoms, an effective three-level interaction Hamiltonian is derived. Based on this, a three-qubit nonadiabatic holonomic gate can be implemented in one step by modulating Rabi frequencies of control pulses on the target atom. The scheme is further optimized using time-optimal control technology based on quantum-brachistochrone formalism, which minimizes the evolution time of the system and mitigates the influence from the environmental decoherence. Numerical simulations results show that the scheme is robust against the Doppler dephasing error, system parameter variations, and atomic spontaneous emissions. Therefore, it is hoped that the scheme may facilitate the realization of fault-tolerant quantum computation in Rydberg atoms.
Keyword ：
geometric phases geometric phases nonadiabatic holonomic gates nonadiabatic holonomic gates Rydberg atoms Rydberg atoms
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| GB/T 7714 | Liu, Shuai , Yang, Han , Qin, Jia-Xi et al. One-Step Implementation of Time-Optimal Three-Qubit Nonadiabatic Holonomic Gates via Dipole-Dipole Interaction in Rydberg Atoms [J]. | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
| MLA | Liu, Shuai et al. "One-Step Implementation of Time-Optimal Three-Qubit Nonadiabatic Holonomic Gates via Dipole-Dipole Interaction in Rydberg Atoms" . | ADVANCED QUANTUM TECHNOLOGIES (2025) . |
| APA | Liu, Shuai , Yang, Han , Qin, Jia-Xi , Ran, Du , Kang, Yi-Hao , Xia, Yan . One-Step Implementation of Time-Optimal Three-Qubit Nonadiabatic Holonomic Gates via Dipole-Dipole Interaction in Rydberg Atoms . | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
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A scheme is proposed for effective and robust generation of magnon Schr & ouml;dinger cat states in the hybrid optomagnonical system. The Schr & ouml;dinger cat states can be generated from the vacuum states and the physical model is easy to be implemented. It is worth noting that the effective normalized coupling strength of the optomagnonical system is able to reach strong coupling regime, which leads to a fast evolution process. Thus, the high fidelity and fast preparation of Schr & ouml;dinger cat states can be achieved. Besides, the numerical simulations show that the scheme is robust against the decay caused by environment and the additive white Gaussian noise (AWGN). It is the hope that the scheme may open a new path to the fast generation of Schr & ouml;dinger cat states in the hybrid system.
Keyword ：
hybrid system hybrid system Kerr nonlinear Kerr nonlinear Schr & ouml;dinger cat states Schr & ouml;dinger cat states
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| GB/T 7714 | Wang, Yu , Xia, Yan , Kang, Yi-Hao . Effective and Robust Generation of Deterministic Magnon Schrödinger Cat States in the Hybrid System [J]. | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
| MLA | Wang, Yu et al. "Effective and Robust Generation of Deterministic Magnon Schrödinger Cat States in the Hybrid System" . | ADVANCED QUANTUM TECHNOLOGIES (2025) . |
| APA | Wang, Yu , Xia, Yan , Kang, Yi-Hao . Effective and Robust Generation of Deterministic Magnon Schrödinger Cat States in the Hybrid System . | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
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We study the periodic entanglement and asymmetric steering at exceptional points for a non-Hermitian cavity magnetomechanics system in which exceptional points (EPs) emerge periodically by controlling the relative phase angle of the nanoparticles. First, we analyze this hybrid system and identify parametric regimes where different types of entanglement and steering are enhanced. Entanglement and steering can be significantly enhanced due to the external control method and are thus more robust to thermal noises. This provides an active method to manipulate the asymmetry of steering instead of adding asymmetric losses or noises to subsystems at the cost of reducing steering ability. Moreover, the relative phase angle (RPA) not only enhances the strength of entanglement but also increases the domain of entanglement over a wider space of detunings compared to a system in which no RPA is present. Another important consequence of the RPA is that it controls the directivity of quantum steering. Specifically, steering reaches a maximal value at EPs as well, and we can get rich properties of Einstein-Podolsky-Rosen steering; e.g., the asymmetry of the overall state is stepwise, including one-way quantum steering, no-way quantum steering, and two-way quantum steering. We believe that the presented scheme is a step forward in realizing robust quantum entanglement using current technology. Our results indicate that cavity magnetomechanics systems could provide a promising platform for the study of macroscopic quantum phenomena.
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| GB/T 7714 | Yuan, Zhong-Hui , Xia, Yan , Jiang, Yong-Yuan et al. Manipulation of asymmetric steering and periodic entanglement in cavity magnetomechanics induced by chiral exceptional points [J]. | PHYSICAL REVIEW B , 2025 , 111 (1) . |
| MLA | Yuan, Zhong-Hui et al. "Manipulation of asymmetric steering and periodic entanglement in cavity magnetomechanics induced by chiral exceptional points" . | PHYSICAL REVIEW B 111 . 1 (2025) . |
| APA | Yuan, Zhong-Hui , Xia, Yan , Jiang, Yong-Yuan , Song, Jie . Manipulation of asymmetric steering and periodic entanglement in cavity magnetomechanics induced by chiral exceptional points . | PHYSICAL REVIEW B , 2025 , 111 (1) . |
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A protocol is proposed for the preparation of high-fidelity entangled cat states with composite pulses. The physical model contains two Kerr-nonlinear resonators and a cavity. By properly designing the parameters, each Kerr-nonlinear resonator is confined in the cat-state subspace and the entangled cat states can be generated efficiently. Composite two-photon drives are introduced with multiple amplitudes and frequencies to improve the fidelity of the entangled cat states in the presence of parameter errors. The performance of the protocol is estimated by taking into account the parametric errors and decoherence. Numerical simulation results show that, the protocol is robustness to timing error, detuning error, and decoherence. It is hoped that the protocol may provide a method for preparing stable entangled cat states.
Keyword ：
circuits QED circuits QED composite pulses composite pulses photonic cat states photonic cat states
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| GB/T 7714 | Gu, Ge-Ge , Li, Dong-Sheng , Chen, Ye-Hong et al. Preparation of High-Fidelity Entangled Cat States with Composite Pulses [J]. | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
| MLA | Gu, Ge-Ge et al. "Preparation of High-Fidelity Entangled Cat States with Composite Pulses" . | ADVANCED QUANTUM TECHNOLOGIES (2025) . |
| APA | Gu, Ge-Ge , Li, Dong-Sheng , Chen, Ye-Hong , Huang, Bi-Hua , Xia, Yan . Preparation of High-Fidelity Entangled Cat States with Composite Pulses . | ADVANCED QUANTUM TECHNOLOGIES , 2025 . |
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In this paper, we study the chaotic dynamics of an optomechanical systems coupled to a non-Markovian environment. The master equation of the system is derived beyond the Markovian approximation and the maximum Lyapunov exponent is employed to quantify the generation of chaos. In contrast to the majority of existing studies on chaos generation in optomechanical systems, our work highlights that the influence exerted by the properties of the environment can be of equivalent significance to that of the system parameters, and in certain cases, the environmental parameters may be even more important. The numerical results show that the memory time and central frequency of the environment play crucial roles in the generation of chaos, and they can even determine whether chaos occurs. In addition, we also investigate the influence of system parameters and compare them with the environmental parameters. We hope the results presented in this paper open a new direction for the research on chaos generation and attract more attentions on the influence of the properties of environments.
Keyword ：
chaos chaos non-Markovian environment non-Markovian environment optomechanical system optomechanical system
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| GB/T 7714 | Xiang, You-Lin , Zhao, Xinyu , Xia, Yan . Chaotic behavior in optomechanical system embedded in non-Markovian environment [J]. | LASER PHYSICS , 2025 , 35 (4) . |
| MLA | Xiang, You-Lin et al. "Chaotic behavior in optomechanical system embedded in non-Markovian environment" . | LASER PHYSICS 35 . 4 (2025) . |
| APA | Xiang, You-Lin , Zhao, Xinyu , Xia, Yan . Chaotic behavior in optomechanical system embedded in non-Markovian environment . | LASER PHYSICS , 2025 , 35 (4) . |
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A protocol is proposed for generating three-particle Knill-Laflamme-Milburn (KLM) states in a system composed of two frequency-tunable flux qubits and a coplanar waveguide resonator. With the help of the counter-rotating interaction, the protocol for generating three-particle KLM states can be realized. The numerical results reveal that the protocol is robust against the effects induced by decoherence and frequency-tuning operations. It is hope that the protocol provides an alternative method to generate entangled states. The mixture of longitude and transverse coupling between qubits and resonators, i.e., a counter-rotating interaction, contains high-order nonlinear processes. Based on this interaction, this article explores an efficient protocol to generate multi-particle Knill-Laflamme-Milburn states in the system consisted of two flux qubits and a resonator. The numerical results reveal the effectiveness and robustness of the protocol. image
Keyword ：
circuit QED circuit QED counter-rotating interation counter-rotating interation Knill-Laflamme-Milburn states Knill-Laflamme-Milburn states Schrieffer-Wolff transformation Schrieffer-Wolff transformation
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| GB/T 7714 | Liu, Yang , Shi, Zhi-Cheng , Song, Jie et al. Generation of Multiparticle Knill-Laflamme-Milburn States in Circuit QED via Counter-Rotating Interactions [J]. | ADVANCED QUANTUM TECHNOLOGIES , 2024 , 7 (7) . |
| MLA | Liu, Yang et al. "Generation of Multiparticle Knill-Laflamme-Milburn States in Circuit QED via Counter-Rotating Interactions" . | ADVANCED QUANTUM TECHNOLOGIES 7 . 7 (2024) . |
| APA | Liu, Yang , Shi, Zhi-Cheng , Song, Jie , Chen, Ye-Hong , Xia, Yan . Generation of Multiparticle Knill-Laflamme-Milburn States in Circuit QED via Counter-Rotating Interactions . | ADVANCED QUANTUM TECHNOLOGIES , 2024 , 7 (7) . |
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In this paper, we propose a one-step scheme for implementing the nonadiabatic holonomic SWAP gate with Rydberg atoms. By applying invariant-based reverse engineering to design the effective Hamiltonian of the system, a suitable evolution path for implementing nonadiabatic holonomic quantum computation is found. In addition, the systematic-error-sensitivity nullified optimal control method is considered in the parameter selections, so that the scheme is insensitive to the systematic error of pulses. We also estimate the effects of random noise, the random initial phase of the pulses, the Doppler shift, and decoherence on the scheme. The numerical results show that the scheme exhibits fairly good performance against these negative factors. Finally, we generalize the scheme to realize the non-Clifford SWAP gates. Therefore, this scheme can provide a feasible framework for implementing high-fidelity and robust SWAP gates and non-Clifford SWAP gates with Rydberg atoms.
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| GB/T 7714 | Xiao, Yang , Kang, Yi-Hao , Zheng, Ri-Hua et al. Effective nonadiabatic holonomic SWAP gate with Rydberg atoms using invariant-based reverse engineering [J]. | PHYSICAL REVIEW A , 2024 , 109 (6) . |
| MLA | Xiao, Yang et al. "Effective nonadiabatic holonomic SWAP gate with Rydberg atoms using invariant-based reverse engineering" . | PHYSICAL REVIEW A 109 . 6 (2024) . |
| APA | Xiao, Yang , Kang, Yi-Hao , Zheng, Ri-Hua , Song, Jie , Chen, Ye-Hong , Xia, Yan . Effective nonadiabatic holonomic SWAP gate with Rydberg atoms using invariant-based reverse engineering . | PHYSICAL REVIEW A , 2024 , 109 (6) . |
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We propose a robust and high-fidelity scheme for realizing universal quantum gates by optimizing short pulse sequences in a three-level system. To alleviate the sensitivity to the errors, we recombine all elements of error matrices to construct a cost function with three types of weight factors. The modulation parameters are obtained by searching for the minimum value of this cost function. The purposes of introducing the weight factors are to reduce the detrimental impact of high-order error matrices, suppress population leakage to the third state, correct the operational error in the qubit space, and optimize the total pulse area of short pulse sequences. The results demonstrate that the optimized sequences exhibit strong robustness against errors and effectively reduce the total pulse area. Therefore, this work presents a valuable method for achieving exceptional robustness and high speed in quantum computations.
Keyword ：
composite pulse composite pulse optimal control optimal control robust quantum control robust quantum control
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| GB/T 7714 | Zhang, Cheng , Liu, Yang , Song, Jie et al. High-fidelity quantum gates via optimizing short pulse sequences in three-level systems [J]. | NEW JOURNAL OF PHYSICS , 2024 , 26 (1) . |
| MLA | Zhang, Cheng et al. "High-fidelity quantum gates via optimizing short pulse sequences in three-level systems" . | NEW JOURNAL OF PHYSICS 26 . 1 (2024) . |
| APA | Zhang, Cheng , Liu, Yang , Song, Jie , Xia, Yan , Shi, Zhi-Cheng . High-fidelity quantum gates via optimizing short pulse sequences in three-level systems . | NEW JOURNAL OF PHYSICS , 2024 , 26 (1) . |
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