Detectability of Dissipative Motion in Quantum Vacuum via Superradiance

Kim, Woo-Joong; Brownell, J. H.; Onofrio, Roberto

doi:10.1103/physrevlett.96.200402

Cited by 95 publications

(50 citation statements)

References 39 publications

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“…Optomechanical systems provide a versatile platform to examine fundamental concepts of quantum physics and explore the classical-quantum boundary. Examples include testing wave-function-collapse models [4][5][6], studying the dynamical Casimir effect (DCE) [7][8][9][10][11][12][13][14], and putting massive objects into nonclassical states [15,16]. One may wonder whether there are unconventional optomechanical (UOM) systems, where the boundary condition of a mechanical resonator can be changed by a quantized optical field.…”

Section: A Conventional Optomechanicsmentioning

confidence: 99%

Unconventional cavity optomechanics: Nonlinear control of phonons in the acoustic quantum vacuum

et al. 2019

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We study unconventional cavity optomechanics and the acoustic analogue of radiation pressure to show the possibility of nonlinear coherent control of phonons in the acoustic quantum vacuum. Specifically, we study systems where a quantized optical field effectively modifies the frequency of an acoustic resonator. We present a general method to enhance such a nonlinear interaction by employing an intermediate qubit. Compared with conventional optomechanical systems, the roles of mechanical and optical resonators are interchanged, and the boundary condition of the phonon resonator can be modulated with an ultrahigh optical frequency. These differences allow to test some quantum effects with parameters which are far beyond the reach of conventional cavity optomechanics. Based on this novel interaction form, we show that various nonclassical quantum effects can be realized. Examples include an effective method for modulating the resonance frequency of a phonon resonator (e.g., a surface-acoustic-wave resonator), demonstrating mechanical parametric amplification, and the dynamical Casimir effect of phonons originating from the acoustic quantum vacuum. Our results demonstrate that unconventional optomechanics offers a versatile hybrid platform for quantum engineering of nonclassical phonon states in quantum acoustodynamics.

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Section: A Conventional Optomechanicsmentioning

confidence: 99%

Unconventional cavity optomechanics: Nonlinear control of phonons in the acoustic quantum vacuum

et al. 2019

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“…Although there are proposals (see, e.g., Ref. [7]) for experimentally observing the DCE using massive mirrors, no experimental verification of the DCE has been reported to date [5]. In order to circumvent this difficulty, a number of theoretical proposals has suggested to use experimental setups where the boundary conditions are modulated by some effective motion instead.…”

Section: Introductionmentioning

confidence: 99%

Dynamical Casimir effect in superconducting microwave circuits

et al. 2010

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We theoretically investigate the dynamical Casimir effect (DCE) in electrical circuits based on superconducting microfabricated waveguides with tunable boundary conditions. We propose implementing a rapid modulation of the boundary conditions by tuning the applied magnetic flux through superconducting quantum-interference devices that are embedded in the waveguide circuits. We consider two circuits: (i) An open waveguide circuit that corresponds to a single mirror in free space, and (ii) a resonator coupled to a microfabricated waveguide, which corresponds to a single-sided cavity in free space. We analyze the properties of the DCE in these two setups by calculating the generated photon-flux densities, output-field correlation functions, and the quadrature squeezing spectra. We show that these properties of the output field exhibit signatures unique to the radiation due to the DCE, and could, therefore, be used for distinguishing the DCE from other types of radiation in these circuits. We also discuss the similarities and differences between the DCE, in the resonator setup, and the down-conversion of pump photons in parametric oscillators.

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“…The experimental prospect of the laboratory verification of Moore-like effects in the near future seem very promising ͓see, e.g., Uhlmann et al ͑2004͒ andKim et al ͑2006͔͒.…”

Section: F Unruh and Moore (Dynamical Casimir) Effectsmentioning

confidence: 99%

The Unruh effect and its applications

2008

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It has been 30 years since the discovery of the Unruh effect. It has played a crucial role in our understanding that the particle content of a field theory is observer dependent. This effect is important in its own right and as a way to understand the phenomenon of particle emission from black holes and cosmological horizons. The Unruh effect is reviewed here with particular emphasis on its applications. A number of recent developments are also commented on and some controversies are discussed. Effort is also made to clarify what seem to be common misconceptions.

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Detectability of Dissipative Motion in Quantum Vacuum via Superradiance

Cited by 95 publications

References 39 publications

Unconventional cavity optomechanics: Nonlinear control of phonons in the acoustic quantum vacuum

Unconventional cavity optomechanics: Nonlinear control of phonons in the acoustic quantum vacuum

Dynamical Casimir effect in superconducting microwave circuits

The Unruh effect and its applications

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