Millionfold improvement in multivibration-feedback optomechanical refrigeration via auxiliary mechanical coupling

Xu, Rui; Lai, Deng-Gao; Hou, Bo‐Yu; Miranowicz, Adam; Nori, Franco

doi:10.1103/physreva.106.033509

Cited by 8 publications

(4 citation statements)

References 112 publications

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“…It is noted that the polarization function is crucial for obtaining reliable structural results (Xu & Hou 2022), and 3-21G and 4-31G basis sets can lead to errors up to 0.03 Å, in particular for C 60 O + in the calculations. Among the six basis sets, def2-SVP induces an error of approximately 1% when H atom is involved, as in the case of C 60 H + and C 70 H + .…”

Section: Geometric Parametersmentioning

confidence: 99%

Towards a reliable prediction of the infrared spectra of cosmic fullerenes and their derivatives in the JWST era

et al. 2023

Monthly Notices of the Royal Astronomical Society

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Fullerenes, including C60, C70, and C60+, are widespread in space through their characteristic infrared vibrational features (C60+ also reveals its presence in the interstellar medium through its electronic transitions) and offer great insights into the carbon chemistry and stellar evolution. The potential existence of fullerene-related species in space has long been speculated and recently put forward by a set of laboratory experiments of C60+, C60H+, C60O+, C60OH+, C70H+, and [C60-Metal]+ complexes. The advent of the James Webb Space Telescope (JWST) provides a unique opportunity to search for these fullerene-related species in space. To facilitate JWST search, analysis, and interpretation, an accurate knowledge of their vibrational properties is essential. Here, we compile a VibFullerene database and conduct a systematic theoretical study on those species. We derive a set of range-specific scaling factors for vibrational frequencies, to account for the deficiency of density functional theory calculations in predicting the accurate frequencies. Scaling factors with low root-mean-square and median errors for the frequencies are obtained, and their performance is evaluated, from which the best-performing methods are recommended for calculating the infrared spectra of fullerene derivatives which balance the accuracy and computational cost. Finally, the recommended vibrational frequencies and intensities of fullerene derivatives are presented for future JWST detection.

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Section: Geometric Parametersmentioning

confidence: 99%

Towards a reliable prediction of the infrared spectra of cosmic fullerenes and their derivatives in the JWST era

et al. 2023

Monthly Notices of the Royal Astronomical Society

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“…Cavity optomechanics, [1] which mainly focuses on the interaction between the cavity mode and the mechanical mode, has fundamental significance for understanding DOI: 10.1002/qute.202400034 quantum behavior. In such systems, many interesting topics such as squeezing mode, [2][3][4] cooling and refrigeration, [5][6][7][8][9][10] entanglement, [11][12][13] optomechanical induced transparency, [14][15][16][17][18] and photon blockade [19][20][21][22][23][24][25][26][27] have attracted much attention in recent years. Photon blockade is a purely quantum effect that characterizes the photon antibunching behavior and is considered as an important method for generating single-photon sources.…”

Section: Introductionmentioning

confidence: 99%

Phonon Blockade in a Hybrid Quadratically Coupled Optomechanical System

Li,

Liu,

Wei

et al. 2024

Adv Quantum Tech

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Phonon statistics in a hybrid optomechanical system, where a mechanical resonator is quadratically coupled to a cavity and couples with another resonator via Coulomb interaction is studied. It is found that the conventional and unconventional phonon blockade can be both achieved at the same parameter regime, which is confirmed by analytical and numerical results. By analyzing the energy level structure, it is found that the anharmonicity of the system is the joint action of both the Coulomb interaction and the optomechanical coupling, where the nonlinearity introduced by the latter has a more significant effect on one branch of the conventional phonon blockade. In addition, the phonon blockade can be enhanced by introducing the mechanical parametric amplifier with optimal parameters, where the physical mechanism underlying comes from the multi‐pathway destructive interference. It is found that the phonon blockade is fragile toward thermal noise due to the weak quantum interference, which can be overcome by increasing the driving strength and applying the mechanical parametric amplifier with suitable parameters. This work may provide a way to manipulate the phonon blockade and can be helpful to the application of quantum information processing.

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“…Due to the strongly nonlinear interaction via radiation pressure and the mechanical mode in a microcavity, optomechanical systems have recently become important candidates for exploring quantum and classical interfaces in macroscopic systems. [ 10–24 ] For example, Schr

\ddot{o}

dinger cat states, [ 25,26 ] squeezing of light, [ 27 ] macroscopic entangle states, [ 28,29 ] and feedback cooling by radiation pressure [ 30 ] were realized in optomechanical systems. Generally, in order to overcome the intrinsic field and mechanical losses, a powerful external field should be introduced into this system.…”

Section: Introductionmentioning

confidence: 99%

“…[8,9] Due to the strongly nonlinear interaction via radiation pressure and the mechanical mode in a microcavity, optomechanical systems have recently become important candidates for exploring quantum and classical interfaces in macroscopic systems. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] DOI: 10.1002/andp. 202200470 For example, Schrödinger cat states, [25,26] squeezing of light, [27] macroscopic entangle states, [28,29] and feedback cooling by radiation pressure [30] were realized in optomechanical systems.…”

Section: Introductionmentioning

confidence: 99%

Chaos Generation in Opto‐Mechanical Coupling System Assisted by Two‐Level Atoms

Zhao

Hou

et al. 2023

Annalen der Physik

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Chaos is important in nonlinear science and promotes the development of fundamental studies, such as neural networks, extreme event statistics, and electron transport. In this paper, a theoretical scheme for generating dynamical chaos in a Fabry-Perot cavity with two-level atoms is investigated. Through the injection of atoms, controllable chaos of the cavity and mechanical oscillator is achieved simultaneously by the external laser field. The trajectory and the maximal Lyapunov exponent that characterize the properties of the chaos could be optimized by adjusting the coupling constant, driving field, injection of atoms, the frequency of the cavity, and the frequency of the mechanical oscillator. This study provides a new idea to manipulate the cavity and mechanical chaos assisted by two level atoms. It is hoped that the results presented can benefit controllable chaos generation and its applications.

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Millionfold improvement in multivibration-feedback optomechanical refrigeration via auxiliary mechanical coupling

Cited by 8 publications

References 112 publications

Towards a reliable prediction of the infrared spectra of cosmic fullerenes and their derivatives in the JWST era

Towards a reliable prediction of the infrared spectra of cosmic fullerenes and their derivatives in the JWST era

Phonon Blockade in a Hybrid Quadratically Coupled Optomechanical System

Chaos Generation in Opto‐Mechanical Coupling System Assisted by Two‐Level Atoms

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