Amplified optomechanics in a unidirectional ring cavity

Xuereb, André; Horák, Péter; Freegarde, Tim

doi:10.1080/09500340.2011.559316

Cited by 8 publications

(9 citation statements)

References 32 publications

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“…In the fundamental aspect, our study indicates the novel possibility to actively enhance other important nonlinear COM effects, such as photon blockade [41,42], phonon squeezing [8], and photon-phonon entanglement. In the future, we also plan to study nonlinear OMIT in a system with multiple phonon modes [15] or intrinsic two-level-system defects [43], especially the possibility of enhancing the sensitivity of detecting the inter-mode mechanical coupling or the phonon-defect coupling, by virtue of the actively amplified OMIT spectrum [39,44,45]. , as a function of pump power for the passive-passive system (k g = -1) (a) and the active-passive system with k g = 0.4 (b), 1.0 (c), or 1.6 (d).…”

Section: Resultsmentioning

confidence: 99%

Nonlinear optomechanics with gain and loss: amplifying higher-order sideband and group delay

et al. 2016

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We study the nonlinear optomechanically induced transparency (OMIT) with gain and loss. We find that (i) for a single active cavity, significant enhancement can be achieved for the higher-order sidebands, including the transmission rate and the group delay; (ii) for active-passive-coupled cavities, hundreds of microsecond of optical delay or advance are attainable for the nonlinear sideband pulses in the parity-time-symmetric regime. The active higher-order OMIT effects, as firstly revealed here, open up the way to make a low-power optomechaical amplifier, which can amplify both the strength and group delay of not only the probe light but also its higher-order sidebands.

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Section: Resultsmentioning

confidence: 99%

Nonlinear optomechanics with gain and loss: amplifying higher-order sideband and group delay

et al. 2016

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“…We provide a further focus on the pure coherent coupling in Sec. IV, where we investigate an optomechanical ring cavity system [49][50][51]. We provide an application example where in certain cases this coupling is beneficial for laser cooling of the mechanical oscillator to its ground state.…”

Section: Introductionmentioning

confidence: 99%

Coherent coupling completing an unambiguous optomechanical classification framework

Korobko

et al. 2019

Phys. Rev. A

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In most optomechanical systems, a movable mirror is a part of an optical cavity, and its oscillation modulates either the resonance frequency of the cavity or its coupling to the environment. There exists the third optionwhich we call a "coherent coupling"-when the mechanical oscillation couples several nondegenerate optical modes supported by the cavity. Identifying the nature of the coupling can be an important step in designing the setup for a specific application. In order to unambiguously distinguish between different optomechanical couplings, we develop a general framework based on the Hamiltonian of the system. Using this framework, we give examples of different couplings and discuss in details one particular case of a purely coherent coupling in a ring cavity with a movable mirror inside. We demonstrate that in certain cases coherent coupling can be beneficial for cooling the motion of the mechanical oscillator. Our general framework allows us to approach the design of optomechanical experiments in a methodological way, for precise exploitation of the strengths of particular optomechanical couplings.

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“…The standard theory for optomechanical damping would thus predict no damping at all. This is probably the reason why the optomechanics of nanooscillators in ring cavities has been discussed only in few papers so far [9,10]. Please note in this context that oscillators in ring-like Michelson-Sagnac interferometers are equivalent to the MIM setup [11,12].…”

Section: Introductionmentioning

confidence: 99%

Optomechanical damping of a nanomembrane inside an optical ring cavity

et al. 2017

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We experimentally and theoretically investigate mechanical nanooscillators coupled to the light in an optical ring resonator made of dielectric mirrors. We identify an optomechanical damping mechanism that is fundamentally different to the well known cooling in standing wave cavities. While in a standing wave cavity the mechanical oscillation shifts the resonance frequency of the cavity, in a ring resonator the frequency does not change. Instead the position of the nodes is shifted with the mechanical excursion. We derive the damping rates and test the results experimentally with a siliconnitride nanomembrane. It turns out that scattering from small imperfections of the dielectric mirror coatings has to be taken into account to explain the value of the measured damping rate. We extend our theoretical model and consider a second reflector in the cavity that captures the effects of mirror back scattering. This model can be used to also describe the situation of two membranes that both interact with the cavity fields. This may be interesting for future work on synchronization of distant oscillators that are coupled by intracavity light fields.

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Amplified optomechanics in a unidirectional ring cavity

Cited by 8 publications

References 32 publications

Nonlinear optomechanics with gain and loss: amplifying higher-order sideband and group delay

Nonlinear optomechanics with gain and loss: amplifying higher-order sideband and group delay

Coherent coupling completing an unambiguous optomechanical classification framework

Optomechanical damping of a nanomembrane inside an optical ring cavity

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