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学者姓名：吴怀志
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Abstract ：
We study static behavior and mechanical cooling of a dissipative optomechanical system by considering a phase-controlled coupling strength. We find that the static displacement of the mechanical oscillator vanishes when the dissipative coupling strength becomes purely imaginary, while a real coupling strength gives rise to a driving power-dependent static mechanical displacement. The absence of static displacement sustains the resonance linewidth of the effective Fabry-Pérot cavity and guarantees the approximation of a linear dissipative coupling. In this case, we show that the membrane can be cooled from the cryogenic temperature to its quantum ground state outside the resolved-sideband limit with a moderately strong driving operating at the red-detuned regime, where the optomechanical cooling rate can be competitive with typical schemes that utilize a real coupling strength and a blue-detuned laser drive. The dissipative optomechanical system with a phase-controlled coupling strength offers the flexibility to investigate fundamental optomechanical effects and may find potential applications in high-sensitive position transduction. © 2025 American Physical Society.
Keyword ：
Couplings Couplings Fabry-Perot interferometers Fabry-Perot interferometers Laser cooling Laser cooling Optomechanics Optomechanics Oscillators (mechanical) Oscillators (mechanical)
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| GB/T 7714 | Liu, Ye , Ye, Guang-Zheng , Hu, Chang-Sheng et al. Ground-state cooling of mechanical motion via phase-controlled dissipative optomechanical coupling [J]. | Physical Review A , 2025 , 111 (2) . |
| MLA | Liu, Ye et al. "Ground-state cooling of mechanical motion via phase-controlled dissipative optomechanical coupling" . | Physical Review A 111 . 2 (2025) . |
| APA | Liu, Ye , Ye, Guang-Zheng , Hu, Chang-Sheng , Li, Yong , Wu, Huaizhi . Ground-state cooling of mechanical motion via phase-controlled dissipative optomechanical coupling . | Physical Review A , 2025 , 111 (2) . |
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We study single-photon scattering spectra of a giant atom chirally coupled to a one-dimensional waveguide at multiple connection points, and examine chirality-induced effects in the scattering spectra. We show that the transmission spectra typically possess an anti-Lorentzian lineshape with a nonzero minimum, but by engineering the chirality of the multipoint coupling, the transmission spectrum of an incident photon can undergo a transition from complete transmission to total reflection at multiple frequency 'windows,'where the width of the anti-Lorentzian lineshape for each of the window can be flexibly tuned at a fixed frequency detuning. Moreover, we show that a perfect nonreciprocal photon scattering can be achieved due to the interplay between internal atomic spontaneous emission and the chirally external decay to the waveguide, in contrast to that induced by the non-Markovian retardation effect. We also consider the non-Markovian retardation effect on the scattering spectra, which allows for a photonic band gap even with only two chiral coupling points. The giant-atom-waveguide system with chiral coupling is a promising candidate for realizing single-photon routers with multiple channels. © 2024 American Physical Society.
Keyword ：
Atoms Atoms Chirality Chirality Energy gap Energy gap Particle beams Particle beams Photonic band gap Photonic band gap Photons Photons Transmissions Transmissions Waveguides Waveguides
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| GB/T 7714 | Li, Shu-Yu , Zhang, Ze-Quan , Du, Lei et al. Single-photon scattering in giant-atom waveguide systems with chiral coupling [J]. | Physical Review A , 2024 , 109 (6) . |
| MLA | Li, Shu-Yu et al. "Single-photon scattering in giant-atom waveguide systems with chiral coupling" . | Physical Review A 109 . 6 (2024) . |
| APA | Li, Shu-Yu , Zhang, Ze-Quan , Du, Lei , Li, Yong , Wu, Huaizhi . Single-photon scattering in giant-atom waveguide systems with chiral coupling . | Physical Review A , 2024 , 109 (6) . |
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Abstract ：
We propose a scheme for realizing nonreciprocal microwave photon routing with two cascaded magnon-cavity coupled systems, which work around the exceptional points of a parity-time (PT)-symmetric Hamiltonian. An almost perfect nonreciprocal transmission can be achieved with a broad bandwidth, where the transmission for a forward-propagating photon can be flexibly controlled with the backpropagating photon being isolated. The transmission or isolated direction can be reversed via simply controlling the magnetic field direction applied to the magnons. The isolation bandwidth is improved by almost three times in comparison with the device based on a single PT-symmetric system. Moreover, the effect of intrinsic cavity loss and added thermal noises is considered, confirming the experimental feasibility of the nonreciprocal device and potential applications in quantum information processing. © 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
Keyword ：
Bandwidth Bandwidth Data mining Data mining Hamiltonians Hamiltonians Photons Photons Quantum optics Quantum optics Transmissions Transmissions
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| GB/T 7714 | Yang, Tian-Le , Ye, Guang-Zheng , Su, Wan-Jun et al. Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling [J]. | Optics Letters , 2024 , 49 (13) : 3781-3784 . |
| MLA | Yang, Tian-Le et al. "Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling" . | Optics Letters 49 . 13 (2024) : 3781-3784 . |
| APA | Yang, Tian-Le , Ye, Guang-Zheng , Su, Wan-Jun , Wu, Huaizhi . Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling . | Optics Letters , 2024 , 49 (13) , 3781-3784 . |
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Understanding the dynamical behavior of a qubit in a reservoir is critical to applications in quantum technological protocols, ranging from quantum computation to quantum metrology. The effect of the reservoir depends on the reservoir's spectral structure as well as on the qubit-reservoir coupling strength. We here propose a measure for quantifying the non-Markovian effect of a reservoir with a Lorentzian spectrum, based on the maximum qubit-reservoir quantum entanglement that can be extracted. Numerical simulation shows that this entanglement exhibits a monotonous behavior in response to the variation of the coupling strength. We confirm the validity of this measure with an experiment where a superconducting qubit is controllably coupled to a lossy resonator, which acts as a reservoir for the qubit. The experimental results illustrate that the maximal extractable entanglement is progressively increased with the strengthening of non-Markovianity. © 2024 Author(s).
Keyword ：
Petroleum reservoir evaluation Petroleum reservoir evaluation Quantum electronics Quantum electronics Quantum entanglement Quantum entanglement Quantum optics Quantum optics Qubits Qubits Superconducting resonators Superconducting resonators
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| GB/T 7714 | Han, Pei-Rong , Wu, Fan , Huang, Xin-Jie et al. Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement [J]. | Applied Physics Letters , 2024 , 125 (12) . |
| MLA | Han, Pei-Rong et al. "Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement" . | Applied Physics Letters 125 . 12 (2024) . |
| APA | Han, Pei-Rong , Wu, Fan , Huang, Xin-Jie , Wu, Huai-Zhi , Yi, Wei , Wen, Jianming et al. Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement . | Applied Physics Letters , 2024 , 125 (12) . |
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In this paper, we propose an optomechanical scheme for generating mechanical squeezing over the 3 dB limit, with the mechanical mirror being driven by a strong and linear harmonic force. In contrast to parametric mechanical driving, the linearly driven force shakes the mechanical mirror periodically oscillating at twice the mechanical eigenfrequency with large amplitude, where the mechanical mirror can be dissipatively stabilized by the engineered cavity reservoir to a dynamical squeezed steady state with a maximum degree of squeezing over 8 dB. The mechanical squeezing of more than 3 dB can be achieved even for a mechanical thermal temperature larger than 100 mK. The scheme can be implemented in a cascaded optomechanical setup, with potential applications in engineering continuous variable entanglement and quantum sensing.
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| GB/T 7714 | Lin, Xin-yu , Ye, Guang-zheng , Liu, Ye et al. Optomechanical squeezing with strong harmonic mechanical driving [J]. | OPTICS EXPRESS , 2024 , 32 (6) . |
| MLA | Lin, Xin-yu et al. "Optomechanical squeezing with strong harmonic mechanical driving" . | OPTICS EXPRESS 32 . 6 (2024) . |
| APA | Lin, Xin-yu , Ye, Guang-zheng , Liu, Ye , Jiang, Yun-kun , Wu, Huaizhi . Optomechanical squeezing with strong harmonic mechanical driving . | OPTICS EXPRESS , 2024 , 32 (6) . |
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Abstract ：
人造巨原子与波导多点耦合系统可打破传统量子光学偶极近似，诱导原子自干涉效应，近年来成为研究光子散射的重要物理平台。本文研究了该模型与一维波导多点手性耦合时，耦合点局域相位对单光子散射的影响。通过实空间哈密顿量方法精准解得系统的透射率与反射率表达式，传播相位被修正为依赖于入射光传播方向的手性相位，并通过设计手性相位来研究散射谱中手性引起的效应。研究发现当手性相位满足与耦合点个数无关的条件时，可使得兰姆能移消失，入射光子的透射谱能在共振处实现完美透射到完全反射的转变。此外，本文展现了引入原子内部自发辐射后，无需利用非马尔可夫延迟效应，仅调控手性相位即可实现完美的非互易光子散射。本文研究表明具有手性耦合点局域相位的巨原子-波导系统能为实现单光子路由提供颇具前景的候选平台。
Keyword ：
单光子散射 单光子散射 原子自干涉效应 原子自干涉效应 巨原子 巨原子 手性耦合 手性耦合 波导量子电动力学 波导量子电动力学
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| GB/T 7714 | 李姝瑜 , 吴怀志 , 韩亚帅 et al. 基于局域耦合相位调控的巨原子单光子散射 [J]. | 量子光学学报 , 2024 , 30 (02) : 24-35 . |
| MLA | 李姝瑜 et al. "基于局域耦合相位调控的巨原子单光子散射" . | 量子光学学报 30 . 02 (2024) : 24-35 . |
| APA | 李姝瑜 , 吴怀志 , 韩亚帅 , 胡长生 . 基于局域耦合相位调控的巨原子单光子散射 . | 量子光学学报 , 2024 , 30 (02) , 24-35 . |
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Abstract ：
Understanding the dynamical behavior of a qubit in a reservoir is critical to applications in quantum technological protocols, ranging from quantum computation to quantum metrology. The effect of the reservoir depends on the reservoir's spectral structure as well as on the qubit-reservoir coupling strength. We here propose a measure for quantifying the non-Markovian effect of a reservoir with a Lorentzian spectrum, based on the maximum qubit-reservoir quantum entanglement that can be extracted. Numerical simulation shows that this entanglement exhibits a monotonous behavior in response to the variation of the coupling strength. We confirm the validity of this measure with an experiment where a superconducting qubit is controllably coupled to a lossy resonator, which acts as a reservoir for the qubit. The experimental results illustrate that the maximal extractable entanglement is progressively increased with the strengthening of non-Markovianity.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Han, Pei-Rong , Wu, Fan , Huang, Xin-Jie et al. Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement [J]. | APPLIED PHYSICS LETTERS , 2024 , 125 (12) . |
| MLA | Han, Pei-Rong et al. "Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement" . | APPLIED PHYSICS LETTERS 125 . 12 (2024) . |
| APA | Han, Pei-Rong , Wu, Fan , Huang, Xin-Jie , Wu, Huai-Zhi , Yi, Wei , Wen, Jianming et al. Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement . | APPLIED PHYSICS LETTERS , 2024 , 125 (12) . |
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Abstract ：
We study single-photon scattering spectra of a giant atom chirally coupled to a one-dimensional waveguide at multiple connection points, and examine chirality-induced effects in the scattering spectra. We show that the transmission spectra typically possess an anti-Lorentzian lineshape with a nonzero minimum, but by engineering the chirality of the multipoint coupling, the transmission spectrum of an incident photon can undergo a transition from complete transmission to total reflection at multiple frequency "windows," where the width of the antiLorentzian lineshape for each of the window can be flexibly tuned at a fixed frequency detuning. Moreover, we show that a perfect nonreciprocal photon scattering can be achieved due to the interplay between internal atomic spontaneous emission and the chirally external decay to the waveguide, in contrast to that induced by the nonMarkovian retardation effect. We also consider the non-Markovian retardation effect on the scattering spectra, which allows for a photonic band gap even with only two chiral coupling points. The giant-atom-waveguide system with chiral coupling is a promising candidate for realizing single-photon routers with multiple channels.
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| GB/T 7714 | Li, Shu-Yu , Zhang, Ze-Quan , Du, Lei et al. Single-photon scattering in giant-atom waveguide systems with chiral coupling [J]. | PHYSICAL REVIEW A , 2024 , 109 (6) . |
| MLA | Li, Shu-Yu et al. "Single-photon scattering in giant-atom waveguide systems with chiral coupling" . | PHYSICAL REVIEW A 109 . 6 (2024) . |
| APA | Li, Shu-Yu , Zhang, Ze-Quan , Du, Lei , Li, Yong , Wu, Huaizhi . Single-photon scattering in giant-atom waveguide systems with chiral coupling . | PHYSICAL REVIEW A , 2024 , 109 (6) . |
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Abstract ：
We propose a scheme for realizing nonreciprocal microwave photon routing with two cascaded magnon-cavity coupled systems, which work around the exceptional points of a parity-time (PT)-symmetric Hamiltonian. An almost perfect nonreciprocal transmission can be achieved with a broad bandwidth, where the transmission for a forward- propagating photon can be flexibly controlled with the backpropagating photon being isolated. The transmission or isolated direction can be reversed via simply controlling the magnetic field direction applied to the magnons. The isolation bandwidth is improved by almost three times in comparison with the device based on a single PT-symmetric system. Moreover, the effect of intrinsic cavity loss and added thermal noises is considered, confirming the experimental feasibility of the nonreciprocal device and potential applications in quantum information processing. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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| GB/T 7714 | Yang, Tian-le , Ye, Guang-zheng , Su, Wan-jun et al. Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling [J]. | OPTICS LETTERS , 2024 , 49 (13) : 3781-3784 . |
| MLA | Yang, Tian-le et al. "Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling" . | OPTICS LETTERS 49 . 13 (2024) : 3781-3784 . |
| APA | Yang, Tian-le , Ye, Guang-zheng , Su, Wan-jun , Wu, Huaizhi . Nonreciprocal routing of microwave photons with broad bandwidth via magnon-cavity chiral coupling . | OPTICS LETTERS , 2024 , 49 (13) , 3781-3784 . |
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Abstract ：
Time periodic driving can serve as synthetic gauge fields and plays a key role in simulating dynamical topological materials. The periodically driven systems, where different spins (or sublattices) are engaged in the different dynamical driving processes are investigated. It is demonstrated that spin-dependent time-periodical periodic driving can result in shifted topological edge modes with non-zero (nor +/- omega/2) quasi-energies. Such shifted topological edge modes are not only related to the spin imbalance at each instantaneous time, but also the details of the dynamical driving. Here, it is also illustrated that the spin-dependent time-periodical driving can be conceived as the time-spin coupling, and similar to the static spatial spin-orbit coupling, tuning time-spin coupling parameters can lead to topological phase transitions. Experimental simulations on the spin-dependent time-periodic driving are proposed by shaking optical super-lattices and Raman assisted tunneling.
Keyword ：
shifted edge modes shifted edge modes spin-dependent time-periodic driving spin-dependent time-periodic driving topological phase transitions topological phase transitions
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| GB/T 7714 | Wang, Huan-Yu , Wu, Huai-Zhi , Zhao, Erhai et al. Inducing Shifted Edge Modes by the Spin-Dependent Time-Periodical Driving and the Corresponding Topological Phase Transitions [J]. | ADVANCED QUANTUM TECHNOLOGIES , 2023 , 6 (6) . |
| MLA | Wang, Huan-Yu et al. "Inducing Shifted Edge Modes by the Spin-Dependent Time-Periodical Driving and the Corresponding Topological Phase Transitions" . | ADVANCED QUANTUM TECHNOLOGIES 6 . 6 (2023) . |
| APA | Wang, Huan-Yu , Wu, Huai-Zhi , Zhao, Erhai , Wang, Ru-Quan , Wang, Xun-Gao , Liu, Wu-Ming . Inducing Shifted Edge Modes by the Spin-Dependent Time-Periodical Driving and the Corresponding Topological Phase Transitions . | ADVANCED QUANTUM TECHNOLOGIES , 2023 , 6 (6) . |
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