Strong thermomechanical squeezing in a far-detuned membrane-in-the-middle system

Sonar, Sameer; Fedoseev, Vitaly; Weaver, Matthew; Luna, Fernando Remigio Tamariz; Vlieg, Elger; Meer, Harmen van der; Bouwmeester, Dirk; Löffler, W.

doi:10.1103/physreva.98.013804

Cited by 14 publications

(9 citation statements)

References 39 publications

(57 reference statements)

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“…A different possibility to produce a squeezed state of the oscillator is the modulation of its spring constant at twice its resonance frequency (parametric modulation) [22]. This scheme has been implemented in several experiments with thermal oscillators, including cavity optomechanical setups where a modulation of the optical spring is obtained by acting on the light intensity or frequency [23,24]. In particular, we remark that the sidebands provide a quantum signature of the oscillator motion even when the thermal effect is still dominating (sideband asymmetry was measured even withn 100 [6]), therefore they represent a powerful indicator that one would hope to exploit to also show non-classical features of squeezed states.…”

mentioning

confidence: 99%

Quantum Signature of a Squeezed Mechanical Oscillator

Chowdhury¹,

Vezio²,

Bonaldi

et al. 2020

Phys. Rev. Lett.

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Some predictions of quantum mechanics are in contrast with the macroscopic realm of everyday experience, in particular those originated by the Heisenberg uncertainty principle, encoded in the non-commutativity of some measurable operators. Nonetheless, in the last decade opto-mechanical experiments have actualized macroscopic mechanical oscillators exhibiting such non-classical properties. A key indicator is the asymmetry in the strength of the motional sidebands generated in

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confidence: 99%

Quantum Signature of a Squeezed Mechanical Oscillator

Chowdhury¹,

Vezio²,

Bonaldi

et al. 2020

Phys. Rev. Lett.

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“…The reduction in input power is given by ∆ 0 /κ, where ∆ 0 is the desired detuning from resonance for the particular application. To suppress unwanted DBA heating or cooling, it is generally taken larger than Ω m [48]. This is one of the applications in which the MIM could outperform a single cavity: optical tuning the mechanical resonance through the optical spring effect using a detuned laser to suppress DBA heating or cooling in a sideband-resolved system.…”

Section: Dynamical Backaction and Quadratic Spring Shiftmentioning

confidence: 99%

Comparing nonlinear optomechanical coupling in membrane-in-the-middle and single-cavity optomechanical systems

Burgwal,

del Pino,

Verhagen

2020

Preprint

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In cavity optomechanics, nonlinear interactions between an optical field and a mechanical resonator mode enable a variety of unique effects in classical and quantum measurement and information processing. Here, we describe nonlinear optomechanical coupling in the membrane-in-the-middle (MIM) setup in a way that allows direct comparison to the intrinsic optomechanical nonlinearity in a standard, single-cavity optomechanical system. We find that the enhancement of nonlinear optomechanical coupling in the MIM system as predicted by Ludwig et al. [1] is limited to the degree of sideband resolution of the system. Moreover, we show that the selectivity of the MIM system of nonlinear over linear transduction has the same limit as in a single cavity system. These findings put constraints on the experiments in which it is advantageous to use a MIM system. We discuss dynamical backaction effects in this system and find that these effects per cavity photon are exactly as strong as in a single cavity system, while allowing for reduction of the required input power. We propose using the nonlinear enhancement and reduced input power in realistic MIM systems towards parametric squeezing and heralding of phonon pairs, and evaluate the limits to the magnitude of both effects.

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“…Our approach is motivated by recent experimental breakthroughs in cavity optomechanics [56,57], which lends itself as a disruptive new platform for CVs in which the information carrier is embodied in the center-of-mass motion of a mechanical oscillator. Indeed ground-state cooling [58][59][60][61][62][63][64], squeezing beyond the parametric limit [65][66][67][68][69], two-oscillator entanglement [70][71][72], and nonlocality [73] have been achieved experimentally, with further scalability and integrability within reach [74][75][76][77][78]. Crucially, optomechanics has a significant advantage over photonics in the unconditional nonlinearity embedded in the radiation pressure dynamics [79,80].…”

Section: Introductionmentioning

confidence: 99%

Unconditional measurement-based quantum computation with optomechanical continuous variables

et al. 2022

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Universal quantum computation encoded over continuous variables can be achieved via Gaussian measurements acting on entangled non-Gaussian states. However, due to the weakness of available nonlinearities, generally these states can only be prepared conditionally, potentially with low probability. Here we show how universal quantum computation could be implemented unconditionally using an integrated platform able to sustain both linear and quadratic optomechanical-like interactions. Specifically, considering cavity opto-and electromechanical systems, we propose a realization of a driven-dissipative dynamics that deterministically prepares the required non-Gaussian cluster states-entangled squeezed states of multiple mechanical oscillators suitably interspersed with cubic-phase states. We next demonstrate how arbitrary Gaussian measurements on the cluster nodes can be performed by continuously monitoring the output cavity field. Finally, the feasibility requirements of this approach are analyzed in detail, suggesting that its building blocks are within reach of current technology.

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Strong thermomechanical squeezing in a far-detuned membrane-in-the-middle system

Cited by 14 publications

References 39 publications

Quantum Signature of a Squeezed Mechanical Oscillator

Quantum Signature of a Squeezed Mechanical Oscillator

Comparing nonlinear optomechanical coupling in membrane-in-the-middle and single-cavity optomechanical systems

Unconditional measurement-based quantum computation with optomechanical continuous variables

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