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学者姓名：钟志荣
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Abstract ：
This paper presents a theoretical analysis of remote information transmission based on a cavity-magnon quantum system. We first investigate the dynamics of a two-site coupled-cavity model, where each cavity contains a magnon. Under the condition of large hopping between two cavities or large detuning between the magnon and cavity modes, the state transfer between two distant magnons could be achieved without exciting the cavity field modes. Optimal coherent state transfer is also demonstrated by carefully adjusting parameters to suppress the cavity excitations. Our model could be utilized as the building block for quantum network by extending to one-dimensional coupled cavity chains.
Keyword ：
cavity-magnonics cavity-magnonics coherent state transfer coherent state transfer dynamics of a two-site coupled-cavity model dynamics of a two-site coupled-cavity model large hopping and large detuning large hopping and large detuning
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| GB/T 7714 | Chen, Ya-Wen , Cheng, Lu-Yun , Lin, Si-Qi et al. Remote information transfer between cavity-magnonics nodes [J]. | PHYSICA SCRIPTA , 2025 , 100 (1) . |
| MLA | Chen, Ya-Wen et al. "Remote information transfer between cavity-magnonics nodes" . | PHYSICA SCRIPTA 100 . 1 (2025) . |
| APA | Chen, Ya-Wen , Cheng, Lu-Yun , Lin, Si-Qi , Ye, Sai-Yun , Zhong, Zhi-Rong . Remote information transfer between cavity-magnonics nodes . | PHYSICA SCRIPTA , 2025 , 100 (1) . |
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The transfer of quantum entangled states is of fundamental interest in quantum physics and plays an important role in quantum information processing, quantum communication, and quantum technology. Here, we propose a scheme to transfer quantum entangled states of two photonic qubits by utilizing four microwave cavities coupled to a superconducting qutrit (a three-level quantum system). The photonic qubits are encoded using two orthogonal eigenstates of the photon-number parity operator with eigenvalues +/- 1, which allows for various encodings for the photonic qubits. The employment of four cavities at distinct frequencies effectively reduces the inter-cavity crosstalk. The utilization of only a single superconducting qutrit as the coupler significantly reduces the circuit resources. The entanglement transfer can be completed in just one step, making this scheme remarkably efficient. During the state transfer process, the third energy level of the coupler qutrit remains unoccupied, and thus decoherence from this level is diminished. Our numerical simulations demonstrate that within current circuit quantum electrodynamics technology, one can achieve high-fidelity transfer of the entangled states of two photonic qubits encoded via squeezed vacuum states and cat states. Our scheme possesses generality and can be applied to accomplish the same task in a variety of physical systems.
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| GB/T 7714 | Bin, Liang , Zhang, Dong-Xuan , Chen, Lei et al. Transmission of photonic entangled states encoded via eigenstates of photon-number parity operator [J]. | APPLIED PHYSICS LETTERS , 2025 , 126 (4) . |
| MLA | Bin, Liang et al. "Transmission of photonic entangled states encoded via eigenstates of photon-number parity operator" . | APPLIED PHYSICS LETTERS 126 . 4 (2025) . |
| APA | Bin, Liang , Zhang, Dong-Xuan , Chen, Lei , Kang, Yi-Hao , Zhong, Zhi-Rong , Su, Qi-Ping et al. Transmission of photonic entangled states encoded via eigenstates of photon-number parity operator . | APPLIED PHYSICS LETTERS , 2025 , 126 (4) . |
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In this paper, we show that the dynamical Casimir effect can be observed in a hybrid cavity optomechanical system. By introducing a two-level atom into the cavity, the atomic transition from an excited state to the ground state can evoke a two-photon process. Our proposal does not require a driving field to induce the dynamical Casimir effect, which is very alternative to previous schemes. Furthermore, we show that when the atom is replaced by an identical atomic ensemble, the system not only can simulate the similar dynamic Casimir effect, but also exist more plentiful physical phenomena, i.e., higher-order resonance. Numerical simulation confirms the validity of our derivation.
Keyword ：
Cavity optomechanical system Cavity optomechanical system Dynamical Casimir effect Dynamical Casimir effect Two-photon JC model Two-photon JC model
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| GB/T 7714 | Lan, Zi-Liang , Chen, Ya-Wen , Cheng, Lu-Yun et al. Dynamical Casimir effect in a hybrid cavity optomechanical system [J]. | QUANTUM INFORMATION PROCESSING , 2024 , 23 (3) . |
| MLA | Lan, Zi-Liang et al. "Dynamical Casimir effect in a hybrid cavity optomechanical system" . | QUANTUM INFORMATION PROCESSING 23 . 3 (2024) . |
| APA | Lan, Zi-Liang , Chen, Ya-Wen , Cheng, Lu-Yun , Chen, Lei , Ye, Sai-Yun , Zhong, Zhi-Rong . Dynamical Casimir effect in a hybrid cavity optomechanical system . | QUANTUM INFORMATION PROCESSING , 2024 , 23 (3) . |
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Nonclassical effects in mesoscopic systems have attracted much attention recently. In this paper, it is shown that multiphonon bundle emission can be observed in a strong-coupling cavity optomechanical system. Theoretical analysis shows that when the driving field is adjusted to nth-order sideband excitation, the coupling between the cavity mode and the vibrational mode leads to super-Rabi oscillations, and finally results in an n-phonon bundles emission. Based on the current technology, this process can work in a wide range of parameters. Numerical simulation confirms the validity of the derivation. It is thought that this physical mechanism broadens the applications of cavity optomechanical system in realm of quantum phononics, such as in quantum metrology and phonon laser.
Keyword ：
cavity optomechanical systems cavity optomechanical systems multiphonon bundle emissions multiphonon bundle emissions super-Rabi oscillations super-Rabi oscillations
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| GB/T 7714 | Deng, Tong-Hui , An, Xing-Wei , Lan, Zi-Liang et al. Multiphonon Bundle Emission in a Strong-Coupling Cavity Optomechanical System [J]. | ANNALEN DER PHYSIK , 2023 , 535 (4) . |
| MLA | Deng, Tong-Hui et al. "Multiphonon Bundle Emission in a Strong-Coupling Cavity Optomechanical System" . | ANNALEN DER PHYSIK 535 . 4 (2023) . |
| APA | Deng, Tong-Hui , An, Xing-Wei , Lan, Zi-Liang , Chen, Lei , Ye, Sai-yun , Zhong, Zhi-Rong . Multiphonon Bundle Emission in a Strong-Coupling Cavity Optomechanical System . | ANNALEN DER PHYSIK , 2023 , 535 (4) . |
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We present an alternative scheme to achieve Schrodinger cat states in a strong coupling hybrid cavity optomechanical system. Under the single-photon strong-coupling regime, the interaction between the atom-cavity-oscillator system can induce the mesoscopic mechanical oscillator to Schrodinger cat states. Comparing to previous schemes, the proposed proposal consider the second order approximation on the Lamb-Dicke parameter, which is more universal in the experiment. Numerical simulations confirm the validity of our derivation.
Keyword ：
hybrid cavity optomechanical system hybrid cavity optomechanical system quantum network quantum network
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| GB/T 7714 | An, Xingwei , Deng, Tonghui , Chen, Lei et al. Generation of Schrodinger Cat States in a Hybrid Cavity Optomechanical System [J]. | ENTROPY , 2022 , 24 (11) . |
| MLA | An, Xingwei et al. "Generation of Schrodinger Cat States in a Hybrid Cavity Optomechanical System" . | ENTROPY 24 . 11 (2022) . |
| APA | An, Xingwei , Deng, Tonghui , Chen, Lei , Ye, Saiyun , Zhong, Zhirong . Generation of Schrodinger Cat States in a Hybrid Cavity Optomechanical System . | ENTROPY , 2022 , 24 (11) . |
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In this paper, we propose a scheme to achieve a multiphonon-resonance quantum Rabi model and adiabatic passage in a strong-coupling cavity optomechanical system. In the scheme, when the driving bichromatic laser beam is adjusted to the off-resonant j-order red- and blue-sideband, the interaction between the cavity and mechanical oscillator leads to a j-phonon resonance quantum Rabi model. Moreover, we show that there exists a resonant multi-phonon coupling via intermediate states connected by counter-rotating processes when the frequency of the simulated bosonic mode is near a fraction of the transition frequency of the simulated two-level system. As a typical example, we theoretically analyze the two-phonon resonance quantum Rabi model, and derive an effective Hamiltonian of the six-phonon coupling. Finally, we present a method of six-phonon generation based on adiabatic passage across the resonance. Numerical simulations confirm the validity of the proposed scheme. Theoretically, the proposed scheme can be extended to the realization of 3j-phonon state.
Keyword ：
adiabatic passage adiabatic passage cavity-optomechanical system cavity-optomechanical system quantum Rabi model quantum Rabi model
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| GB/T 7714 | Zhong, Zhi-Rong , Chen, Lei , Sheng, Jian-Qi et al. Multiphonon-resonance quantum Rabi model and adiabatic passage in a cavity-optomechanical system [J]. | FRONTIERS OF PHYSICS , 2022 , 17 (1) . |
| MLA | Zhong, Zhi-Rong et al. "Multiphonon-resonance quantum Rabi model and adiabatic passage in a cavity-optomechanical system" . | FRONTIERS OF PHYSICS 17 . 1 (2022) . |
| APA | Zhong, Zhi-Rong , Chen, Lei , Sheng, Jian-Qi , Shen, Li-Tuo , Zheng, Shi-Biao . Multiphonon-resonance quantum Rabi model and adiabatic passage in a cavity-optomechanical system . | FRONTIERS OF PHYSICS , 2022 , 17 (1) . |
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In this paper, we propose an efficient method to achieve a multimode quantum Rabi model in a strong-coupling cavity optomechanical system. In the proposed proposal, we show that when the driving bichromatic laser is simultaneously adjusted to red- and blue-sideband excitations, the interaction between the cavity mode and the vibrational modes can be treated as a multimode quantum Rabi model under the single-photon strong-coupling regime. As a typical example, we theoretically analyze the two-mode quantum Rabi model and show that the entangled state of two vibrational modes can be achieved in the two-mode quantum Rabi model. Numerical simulations confirm the validity of the proposed scheme.
Keyword ：
Cavity optomechanical system Cavity optomechanical system Entanglement Entanglement Quantum Rabi model Quantum Rabi model
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| GB/T 7714 | Chen, Lei , An, Xing-Wei , Deng, Tong-Hui et al. Toward multimode quantum Rabi model in a strong-coupling cavity optomechanical system [J]. | QUANTUM INFORMATION PROCESSING , 2022 , 21 (7) . |
| MLA | Chen, Lei et al. "Toward multimode quantum Rabi model in a strong-coupling cavity optomechanical system" . | QUANTUM INFORMATION PROCESSING 21 . 7 (2022) . |
| APA | Chen, Lei , An, Xing-Wei , Deng, Tong-Hui , Zhong, Zhi-Rong . Toward multimode quantum Rabi model in a strong-coupling cavity optomechanical system . | QUANTUM INFORMATION PROCESSING , 2022 , 21 (7) . |
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Abstract ：
In this paper, we propose a simple method to simultaneously generate the entanglement between macroscopic objects (mechanical oscillators) and entanglement between microscopic objects (photons) based on a coupled cavity-optomechanical system. We show that when the cavity-optomechanical system works in the single-photon strong-coupling regime and in the deep quantum regime, the radiation pressure of a photon which is created by the atom-cavity interaction, can directly induce these joint entangled states. Thus, no measurement on this system is required. Numerical simulation shows that the fidelity of the prepared joint entangled states can reach 0.954.
Keyword ：
Cavity optomechanics Cavity optomechanics Coupled cavity system Coupled cavity system Entanglement generation Entanglement generation
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| GB/T 7714 | Zheng, Yi-Fan , An, Xian-Tong , Rao, Kai-Xia et al. Can Macroscopic Objects Entanglement and Microscopic Objects Entanglement Be Entangled Simultaneously? [J]. | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS , 2021 , 60 (3) : 1175-1183 . |
| MLA | Zheng, Yi-Fan et al. "Can Macroscopic Objects Entanglement and Microscopic Objects Entanglement Be Entangled Simultaneously?" . | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 60 . 3 (2021) : 1175-1183 . |
| APA | Zheng, Yi-Fan , An, Xian-Tong , Rao, Kai-Xia , Huang, Yin , Zhong, Zhi-Rong . Can Macroscopic Objects Entanglement and Microscopic Objects Entanglement Be Entangled Simultaneously? . | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS , 2021 , 60 (3) , 1175-1183 . |
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The second-order quantum phase transition and quench dynamics in the two-mode Rabi model are investigated. We propose a diagonalization approach of jointly using a beam-splitter operator and a squeezed operator for each effective low-energy Hamiltonian when the ratio of the qubit transition frequency to the oscillator frequency approximates infinity. Eigenenergy and eigenstate of the normal and superradiant phases in the system are analytically derived, demonstrating the second-order quantum phase transition at a critical point. This critical point means that the requirement of coupling strength between the qubit and two oscillators is largely loosened by joint effect of two modes when compared with the standard Rabi model. The universal scaling between residual energy and quench time from tau(-1/3) to tau(-2) is confirmed.
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| GB/T 7714 | Shen, Li-Tuo , Yang, Jing-Wen , Zhong, Zhi-Rong et al. Quantum phase transition and quench dynamics in the two-mode Rabi model [J]. | PHYSICAL REVIEW A , 2021 , 104 (6) . |
| MLA | Shen, Li-Tuo et al. "Quantum phase transition and quench dynamics in the two-mode Rabi model" . | PHYSICAL REVIEW A 104 . 6 (2021) . |
| APA | Shen, Li-Tuo , Yang, Jing-Wen , Zhong, Zhi-Rong , Yang, Zhen-Biao , Zheng, Shi-Biao . Quantum phase transition and quench dynamics in the two-mode Rabi model . | PHYSICAL REVIEW A , 2021 , 104 (6) . |
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We study a cross-cavity quantum Rabi model with ultrastrong coupling, and its analytical ground state is demonstrated to be approximately obtained by using the rotating-transformation method. Our method requires making three unitary transformations to the original Hamiltonian and ignoring the three-party cross interaction. In near-resonance and ultrastrong-coupling regimes, the ground-state fidelity is higher than 99% for a +/- 20% detuning range. We analytically demonstrate that the entanglement in ground state first quadratically increases with the qubit-oscillator coupling strength, then gets close to the maximum value 1. The oscillator's nonclassical property in the ground state is well explained by analytically solving the Wigner function.
Keyword ：
entanglement entanglement ground state ground state Rabi model Rabi model ultrastrong coupling ultrastrong coupling
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| GB/T 7714 | Shen, Lituo , Yang, Jingwen , Shi, Zhicheng et al. Ground state of a cross-cavity quantum Rabi model [J]. | JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL , 2021 , 54 (10) . |
| MLA | Shen, Lituo et al. "Ground state of a cross-cavity quantum Rabi model" . | JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 54 . 10 (2021) . |
| APA | Shen, Lituo , Yang, Jingwen , Shi, Zhicheng , Zhong, Zhirong , Xu, Canhua . Ground state of a cross-cavity quantum Rabi model . | JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL , 2021 , 54 (10) . |
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