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学者姓名：陈叶鸿
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Abstract ：
In this paper, we propose a protocol to accelerate a weak nonlinear quantum process: a single photon simultaneously excites two atoms using shortcut to adiabaticity. We consider a physical model composed of a transmission-line resonator and two flux qubits, where the frequency of the resonator is approximately equal to the sum of the frequencies of the two qubits. Using unitary transformation and a series of approximate methods, the system can be reduced to an equivalent two-level model. Since this transition is a weak high-order process, it is relatively sensitive to errors and decoherence. To overcome the flaws, we use the shortcut to adiabaticity method based on Lewis-Riesenfeld invariant for inverse engineering of the effective Hamiltonian, so that the transition rate can be accelerated. The robustness of the system against noise and decoherence can be improved. Therefore, the protocol we proposed can be applicable to quantum information processing and quantum optics in the microwave regime.
Keyword ：
shortcuts to adiabaticity shortcuts to adiabaticity simultaneous excitation simultaneous excitation superconducting circuits superconducting circuits
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| GB/T 7714 | Zhou, Kuan-Yu , Yan, Ke-Xiong , Chen, Ye-Hong et al. Simultaneous excitation of two atoms by a single photon using shortcut to adiabaticity [J]. | LASER PHYSICS LETTERS , 2025 , 22 (3) . |
| MLA | Zhou, Kuan-Yu et al. "Simultaneous excitation of two atoms by a single photon using shortcut to adiabaticity" . | LASER PHYSICS LETTERS 22 . 3 (2025) . |
| APA | Zhou, Kuan-Yu , Yan, Ke-Xiong , Chen, Ye-Hong , Xia, Yan . Simultaneous excitation of two atoms by a single photon using shortcut to adiabaticity . | LASER PHYSICS LETTERS , 2025 , 22 (3) . |
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Gottesman-Kitaev-Preskill (GKP) encoding holds promise for continuous-variable fault-tolerant quantum computing. While an ideal GKP encoding is abstract and impractical due to its nonphysical nature, approximate versions provide viable alternatives. Conventional approximate GKP codewords are superpositions of multiple large-amplitude squeezed coherent states. This feature ensures correctability against single-photon loss and dephasing at short times, but also increases the difficulty of preparing the codewords. To minimize this tradeoff, we utilize a neural network to generate optimal approximate GKP states, allowing effective error correction with just a few squeezed coherent states. We find that such optimized GKP codes outperform the best conventional ones, requiring fewer squeezed coherent states, while maintaining simple and generalized stabilizer operators. Specifically, the former outperform the latter with just one-third of the number of squeezed coherent states at a squeezing level of 9.55 dB. This optimization drastically decreases the complexity of codewords while improving error correctability.
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| GB/T 7714 | Zeng, Yexiong , Qin, Wei , Chen, Ye-Hong et al. Neural-Network-Based Design of Approximate Gottesman-Kitaev-Preskill Code [J]. | PHYSICAL REVIEW LETTERS , 2025 , 134 (6) . |
| MLA | Zeng, Yexiong et al. "Neural-Network-Based Design of Approximate Gottesman-Kitaev-Preskill Code" . | PHYSICAL REVIEW LETTERS 134 . 6 (2025) . |
| APA | Zeng, Yexiong , Qin, Wei , Chen, Ye-Hong , Gneiting, Clemens , Nori, Franco . Neural-Network-Based Design of Approximate Gottesman-Kitaev-Preskill Code . | PHYSICAL REVIEW LETTERS , 2025 , 134 (6) . |
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We propose a protocol to study the dynamical Casimir effect (DCE) in an optomechanical system involving a frequency-modulated resonator with a vibrating mirror. The frequency modulation changes the resonant condition of the photon-phonon parametric coupling and then makes the photons generated by the DCE become more observable. Through the vacuum Casimir-Rabi splitting, the generation of photons from the DCE is demonstrated. Meanwhile, numerical simulations show that when driving the mechanical mode, the system is able to emit observable photon fluxes, even though the resonator frequency is much larger than the mechanical frequency. The results also validate the protocol is robust to the resonator decay and the modulation parameters. Thus, our protocol paves the way to explore the DCE for cavity optomechanical systems. (c) 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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| GB/T 7714 | Liu, Yang , Chen, Ye-hong , Qin, Wei et al. Exploring the dynamical Casimir effect via resonator frequency modulations [J]. | OPTICS EXPRESS , 2025 , 33 (4) : 8095-8111 . |
| MLA | Liu, Yang et al. "Exploring the dynamical Casimir effect via resonator frequency modulations" . | OPTICS EXPRESS 33 . 4 (2025) : 8095-8111 . |
| APA | Liu, Yang , Chen, Ye-hong , Qin, Wei , Song, Jie , Xia, Yan . Exploring the dynamical Casimir effect via resonator frequency modulations . | OPTICS EXPRESS , 2025 , 33 (4) , 8095-8111 . |
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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 , 8 (8) . |
| MLA | Gu, Ge-Ge et al. "Preparation of High-Fidelity Entangled Cat States with Composite Pulses" . | ADVANCED QUANTUM TECHNOLOGIES 8 . 8 (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 , 8 (8) . |
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We propose a protocol to effectively study the interference of Dirac particles in phase space. The negativity of the quasiprobability distribution in phase space and the entanglement between the internal and external degrees of freedom constitute the non-classical manifestations of this interference. The protocol makes use of a synthetic quantum Rabi model, which is obtained by applying a parametric drive to the Jaynes-Cummings model. When the parametric drive is almost resonant with the cavity frequency, the effective system Hamiltonian takes the same form as the one-dimensional Dirac particle Hamiltonian. We explore the quantum interference using this equivalent model and find that the interference pattern can occur even in the absence of the Zitterbewegung effect. In addition, we simulate the quantum behavior of Dirac particles encountering potential barriers through the simulation of Klein tunneling. These non-classical effects offer potential application in fields such as quantum computing. © 2025 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.
Keyword ：
Degrees of freedom (mechanics) Degrees of freedom (mechanics) Hamiltonians Hamiltonians Jaynes-Cummings model Jaynes-Cummings model Linear equations Linear equations One dimensional One dimensional Parametric devices Parametric devices Phase space methods Phase space methods Quantum computers Quantum computers Quantum entanglement Quantum entanglement Quantum interference devices Quantum interference devices
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| GB/T 7714 | Qiu, Yuan , Yan, Ke-Xiong , Lin, Jun-Hao et al. Efficient protocol for exploring the quantum interference and entanglement of Dirac particles [J]. | New Journal of Physics , 2025 , 27 (8) . |
| MLA | Qiu, Yuan et al. "Efficient protocol for exploring the quantum interference and entanglement of Dirac particles" . | New Journal of Physics 27 . 8 (2025) . |
| APA | Qiu, Yuan , Yan, Ke-Xiong , Lin, Jun-Hao , Song, Jie , Chen, Ye-Hong , Xia, Yan . Efficient protocol for exploring the quantum interference and entanglement of Dirac particles . | New Journal of Physics , 2025 , 27 (8) . |
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We propose a general approach to speed up quantum adiabatic processes for fast quantum information transfer in a three-level system. In the approach, by using an intermediate Hamiltonian which is assumed to be formed by the original Hamiltonian H-0(t) and its counterdiabatic driving Hamiltonian H-cd(t) with a simple linear relationship, we design exact dynamics following the eigenstates of the intermediate Hamiltonian to speed up the desired population processes. We apply the present approach to a three-level system to show that by suitably choosing the parameters, not only the population processes could be sped up, but also the existence of the undesired off-diagonal terms, the populations of the intermediate states, and even the shapes of the pulses would be controllable in the speeding up scheme.
Keyword ：
quantum state transfer quantum state transfer shortcuts to adiabaticity shortcuts to adiabaticity three-level system three-level system
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| GB/T 7714 | Huang, Chun-Rong , Chen, Ye-Hong . Accelerating quantum information transfer in a three-level system via a specified intermediate Hamiltonian [J]. | LASER PHYSICS LETTERS , 2024 , 21 (12) . |
| MLA | Huang, Chun-Rong et al. "Accelerating quantum information transfer in a three-level system via a specified intermediate Hamiltonian" . | LASER PHYSICS LETTERS 21 . 12 (2024) . |
| APA | Huang, Chun-Rong , Chen, Ye-Hong . Accelerating quantum information transfer in a three-level system via a specified intermediate Hamiltonian . | LASER PHYSICS LETTERS , 2024 , 21 (12) . |
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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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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 experimental observables associated with them. Here, we describe a method to identify the dynamical critical phenomenon in the quantum Rabi model consisting of a three-level atom and a cavity at the quantum phase transition. Such a critical phenomenon manifests itself as a sudden change of steady-state output photons in the system driven by two classical fields, when both the atom and the cavity are initially unexcited. The process occurs as the high-frequency pump field is converted into the low-frequency Stokes field and multiple cavity photons in the normal phase, while this conversion cannot occur in the superradiant phase. The sudden change of steady-state output photons is an experimentally accessible measure to probe quantum phase transitions, as it does not require preparing the equilibrium state. Quantum Rabi model as an outstanding model can support superradiant phase transitions, and gets increasing interest in the quantum physics. This work presents an effective method to demonstrate the dynamical critical phenomenon in quantum Rabi model without preparing the Confirmed equilibrium state, i.e., a sudden change of the photon number distribution.
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| GB/T 7714 | Chen, Ye-Hong , Qiu, Yuan , Miranowicz, Adam et al. Sudden change of the photon output field marks phase transitions in the quantum Rabi model [J]. | COMMUNICATIONS PHYSICS , 2024 , 7 (1) . |
| MLA | Chen, Ye-Hong et al. "Sudden change of the photon output field marks phase transitions in the quantum Rabi model" . | COMMUNICATIONS PHYSICS 7 . 1 (2024) . |
| APA | Chen, Ye-Hong , Qiu, Yuan , Miranowicz, Adam , Lambert, Neill , Qin, Wei , Stassi, Roberto et al. Sudden change of the photon output field marks phase transitions in the quantum Rabi model . | COMMUNICATIONS PHYSICS , 2024 , 7 (1) . |
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In this paper, a one-step protocol is proposed for the parity measurement of N cat-state qubits which are encoded on the cat states of the modes in superconducting Kerr-nonlinear cavities. The parity measurement is performed with the help of an auxiliary qutrit. Especially, the auxiliary qutrit can (cannot) be excited to the higher-energy levels when the cat-state qubits are in the even- (odd-) parity state. By designing the Rabi frequency of the classical fields via reverse engineering and optimal control, the qutrit is driven to an excited dressed state in the even-parity case, which is robust to the systematic errors of the qutrit-cavity coupling strengths. Accordingly, the parity of the cat-state qubits can be distinguished with high accuracy by measuring the final population of the ground state of the auxiliary qutrit. Numerical simulations also show that the protocol is insensitive to the systematic errors of the classical fields, the inhomogeneity of the coupling strengths, intercavity cross talk, unwanted qutrit transitions, and decoherence. Therefore, the protocol may provide an effective approach for parity measurement of multiple cat-state qubits.
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| GB/T 7714 | Li, Dong-Sheng , Kang, Yi-Hao , Chen, Ye-Hong et al. One-step parity measurement of N cat-state qubits via reverse engineering and optimal control [J]. | PHYSICAL REVIEW A , 2024 , 109 (2) . |
| MLA | Li, Dong-Sheng et al. "One-step parity measurement of N cat-state qubits via reverse engineering and optimal control" . | PHYSICAL REVIEW A 109 . 2 (2024) . |
| APA | Li, Dong-Sheng , Kang, Yi-Hao , Chen, Ye-Hong , Liu, Yang , Zhang, Cheng , Wang, Yu et al. One-step parity measurement of N cat-state qubits via reverse engineering and optimal control . | PHYSICAL REVIEW A , 2024 , 109 (2) . |
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In this work, we develop a supervised learning model for implementing robust quantum control in composite-pulse systems, where the training parameters can be either phases, detunings, or Rabi frequencies. This model exhibits great resistance to all kinds of systematic errors, including single, multiple, and time-varying errors. We propose a modified gradient descent algorithm for adapting the training of phase parameters, and show that different sampling methods result in different robust performances. In particular, there is a trade-off between high fidelity and robustness for a given number of training parameters, and both can be simultaneously enhanced by increasing the number of training parameters (pulses). For its applications, we demonstrate that the current model can be used for achieving high-fidelity arbitrary superposition states and universal quantum gates in a robust manner. This work provides a highly efficient learning model for fault-tolerant quantum computation by training various physical parameters.
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| GB/T 7714 | Shi, Zhi-Cheng , Ding, Jun -Tong , Chen, Ye-Hong et al. Supervised learning for robust quantum control in composite-pulse systems [J]. | PHYSICAL REVIEW APPLIED , 2024 , 21 (4) . |
| MLA | Shi, Zhi-Cheng et al. "Supervised learning for robust quantum control in composite-pulse systems" . | PHYSICAL REVIEW APPLIED 21 . 4 (2024) . |
| APA | Shi, Zhi-Cheng , Ding, Jun -Tong , Chen, Ye-Hong , Ding, Jun-Tong , Song, Jie , Xia, Yan et al. Supervised learning for robust quantum control in composite-pulse systems . | PHYSICAL REVIEW APPLIED , 2024 , 21 (4) . |
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