Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator

Restrepo, Juliana; Gabelli, Julien; Ciuti, Cristiano; Favero, Iván

doi:10.1016/j.crhy.2011.02.005

Cited by 63 publications

(75 citation statements)

References 29 publications

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“…Unlike the cooling schemes with modulated coupling [36][37][38][39][40], we take advantage of large cavity dissipation, usually regarded as a noise source. Together with recent proposals of other dissipative effects such as two-level ensembles [41] or the photothermal effect [42,43], we demonstrate that cavity dissipation (even in the presence of the considered dissipation quantum backaction) can be viewed as a resource. Compared with the dissipative coupling [44][45][46], this active dissipation control does not require coupling between the cavity …”

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confidence: 92%

Dynamic Dissipative Cooling of a Mechanical Resonator in Strong Coupling Optomechanics

et al. 2013

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Cooling of mesoscopic mechanical resonators represents a primary concern in cavity optomechanics. In this Letter, in the strong optomechanical coupling regime, we propose to dynamically control the cavity dissipation, which is able to significantly accelerate the cooling process while strongly suppressing the heating noise. Furthermore, the dynamic control is capable of overcoming quantum backaction and reducing the cooling limit by several orders of magnitude. The dynamic dissipation control provides new insights for tailoring the optomechanical interaction and offers the prospect of exploring mesoscopic quantum physics.

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confidence: 92%

Dynamic Dissipative Cooling of a Mechanical Resonator in Strong Coupling Optomechanics

et al. 2013

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“…Other detrimental effects of absorption, such as heating, are mitigated by the large coupling strengths obtained, which allow much smaller photon numbers to be used [(g (1) sin ) 2 ∝ N 3 increases faster than the absorbed power as N increases]. We note also that at large input powers it might be possible to exploit photothermal forces to further enhance, or change the nature of, the collective optomechanical interaction [75][76][77][78][79].…”

Section: Resilience To Imperfections and Absorptionmentioning

confidence: 99%

Collectively enhanced optomechanical coupling in periodic arrays of scatterers

2013

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We investigate the optomechanical properties of a periodic array of identical scatterers placed inside an optical cavity and extend our previous results [Xuereb, Genes, and Dantan, Phys. Rev. Lett. 109, 223601 (2012)]. We show that operating at the points where the array is transmissive results in linear optomechanical coupling strengths between the cavity field and collective motional modes of the array that may be several orders of magnitude larger than is possible with an equivalent reflective ensemble. We describe and interpret these effects in detail and investigate the nature of the scaling laws of the coupling strengths for the different transmissive points in various regimes. The ability to measure and control the motion of massive mechanical oscillators has progressed dramatically in recent years [1,2], and several important milestones have been reached in the field of optomechanics towards bringing this capability into the quantum regime, including the cooling to the motional quantum ground state [3][4][5], the detection of quantized mechanical motion [6,7], and the observation of ponderomotive squeezing of light [8,9] or of radiation-pressure shot noise on a mechanical oscillator [10].One challenge faced by the current generation of optomechanical experiments is that the interaction strength between a single photon and a single massive mechanical element is typically very weak. This can be ameliorated by confining light in wavelength-scale structures [11] or, generically, counteracted by the use of strong light fields in an optical resonator to amplify the interaction strength [12], albeit at the expense of trading off the intrinsically nonlinear nature of the radiation-pressure interaction (see, however, recent proposals in Refs. [13,14]). A growing number of theoretical proposals have contemplated the opposite, a "strong coupling" regime, where a single photon can affect the motion of the oscillator significantly, thus giving access to the full quantum nature of the optomechanical interaction [15][16][17][18][19][20][21][22][23].On the other hand, collective effects in optomechanical systems involving multiple mechanical and electromagnetic field modes have been discussed in a number of theoretical works, in connection with, e.g., optomechanical entanglement [24][25][26][27][28][29][30][31][32][33][34] Motivated by the exploration of such collective optomechanical effects, we recently [58] showed that the collective motion of a periodic array of identical scatterers, when placed inside a cavity field, can couple very strongly to the optical field in the configuration where the array is transmissive, in contrast to the usual reflective optomechanics approach. The aim of the present work is to present a detailed exploration of this system in order to highlight the regimes in which these generic collective effects are seen and to compare the various possible transmissive operating points.This paper is organized as follows. In the next section we summarize and discuss the tools used to model a periodic ...

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“…One striking feature is the possibility of optomechanical cooling to the motional ground-state in the bad-cavity limit, in contrast to the requirement of good-cavity operation (resolved sideband regime) in the standard dispersive coupling case. This fact has been pointed out in diverse dissipative optomechanics configurations, involving either a cavity coupling to the input port modulated by mechanical motion [34][35][36] or optical forces of dissipative nature like the photothermal force [37,38].…”

Section: Absorptive (Dissipative) Casementioning

confidence: 98%

Mechanical Resonators in the Middle of an Optical Cavity

Favero¹,

Sankey²,

Weig³

2014

Cavity Optomechanics

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The interaction of light with mechanical motion has generated a burst of interest in recent years [1][2][3][4] from fundamental questions on the quantum motion of solid objects to novel engineering concepts for sensing and optical devices. This interest was originally inspired by experimental geometries in which a mechanically compliant object acts as the back mirror of Fabry-Perot cavity. In order to maintain a stable, high-finesse cavity with this geometry, the mechanical element's transverse dimensions must be larger than the photon's wavelength and its thickness sufficient to create an appreciable reflectivity. This places a lower bound on the mass of the mechanical object, limiting the effect of individual photons. Here we explore a complementary set of geometries in which a nanomechanical element or a very thin membrane is positioned within a high-finesse, rigid optical cavity. This geometry (inspired by the success of cavity quantum electrodynamics experiments with atoms) extends Fabry-Perot-based optomechanics to smaller / sub-wavelength mechanical elements. The added complexity associated with inserting a third (movable) scatterer also affords a new set of opportunities: in addition to reproducing the physics of a two-mirror optomechanical system, several "non-standard" types of linear and non-linear optomechanical couples can be generated. Combined with the diverse set of comparatively lightweight mechanical elements that can be inserted into a cavity, this geometry offers a high degree of optomechanical versatility for potential sensing and quantum information applications.

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Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator

Abstract: Nano-and micro-optomechanical systems / Nano-et micro-résonateurs optomécaniques Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator Théorie classique et quantique du refroidissement photothermique en cavité d'un oscillateur mécanique

Cited by 63 publications

References 29 publications

Dynamic Dissipative Cooling of a Mechanical Resonator in Strong Coupling Optomechanics

Dynamic Dissipative Cooling of a Mechanical Resonator in Strong Coupling Optomechanics

Collectively enhanced optomechanical coupling in periodic arrays of scatterers

Mechanical Resonators in the Middle of an Optical Cavity

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