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Cavity opto-mechanical cooling via radiation pressure dynamical backaction enables ground state cooling of mechanical oscillators, provided the laser exhibits sufficiently low phase noise. Here, we investigate and measure the excess phase…

Quantum Physics · Physics 2011-12-30 Tobias J. Kippenberg , Albert Schliesser , Michael Gorodetsky

The combination of ultra-cold atomic clouds with the light fields of optical cavities provides a powerful model system for the development of new types of laser cooling and for studying cooperative phenomena. These experiments critically…

Atomic Physics · Physics 2008-01-29 Simone Bux , Gordon Krenz , Sebastian Slama , Claus Zimmermann , Philippe W. Courteille

We investigate theoretically the influence of laser phase noise on the cooling and heating of a generic cavity optomechanical system. We derive the back-action damping and heating rates and the mechanical frequency shift of the radiation…

Quantum Physics · Physics 2015-05-20 Gregory A. Phelps , Pierre Meystre

We investigate laser cooling of an ensemble of atoms in an optical cavity. We demonstrate that when atomic dipoles are sychronized in the regime of steady-state superradiance, the motion of the atoms may be subject to a giant frictional…

Quantum Physics · Physics 2016-04-20 Minghui Xu , Simon B. Jäger , S. Schütz , J. Cooper , Giovanna Morigi , M. J. Holland

We present a detailed theoretical discussion of the effects of ubiquitous laser noise on cooling and the coherent dynamics in opto-mechanical systems. Phase fluctuations of the driving laser induce modulations of the linearized…

Quantum Physics · Physics 2015-05-13 P. Rabl , C. Genes , K. Hammerer , M. Aspelmeyer

We present a microscopic laser model for many atoms coupled to a single cavity mode, including the light forces resulting from atom-field momentum exchange. Within a semiclassical description, we solve the equations for atomic motion and…

Quantum Physics · Physics 2007-12-18 Thomas Salzburger Helmut Ritsch

The noise from laser phase fluctuation sets a major technical obstacle to cool the nano-mechanical oscillators to the quantum region. We propose a cooling configuration based on the opto-mechanical coupling with two cavity modes to…

Quantum Physics · Physics 2009-09-14 Zhang-qi Yin

Cavity cooling of an atom works best on a cyclic optical transition in the strong coupling regime near resonance, where small cavity photon numbers suffice for trapping and cooling. Due to the absence of closed transitions a straightforward…

Quantum Physics · Physics 2012-11-13 R. J. Schulze , C. Genes , H. Ritsch

Optomechanical systems show tremendous promise for high sensitivity sensing of forces and modification of mechanical properties via light. For example, similar to neutral atoms and trapped ions, laser cooling of mechanical motion by…

Quantum Physics · Physics 2017-06-07 Xunnong Xu , Thomas Purdy , Jacob M. Taylor

We propose a cavity based laser cooling and trapping scheme, providing tight confinement and cooling to very low temperatures, without degradation at high particle densities. A bidirectionally pumped ring cavity builds up a resonantly…

Quantum Physics · Physics 2009-11-10 Th. Elsaesser , B. Nagorny , A. Hemmerich

We study the optical cooling of the resonator mirror in a cavity-optomechanical system that contains an optical gain medium. We find that the optical damping rate is vanishingly small for an incoherently pumped laser above threshold. In the…

Quantum Physics · Physics 2015-06-12 Li Ge , Sanli Faez , Florian Marquardt , Hakan E. Tureci

We review and study the roles of quantum and classical fluctuations in recent cavity-optomechanical experiments which have now reached the quantum regime (mechanical phonon occupancy < 1) using resolved sideband laser cooling. In…

Ground-state cooling of mechanical motion by coupling to a driven optical cavity has been demonstrated in various optomechanical systems. In our work, we provide a so far missing thermodynamic performance analysis of optomechanical sideband…

Dynamical back-action cooling of phonons in optomechanical systems having one optical mode is well studied. Systems with two optical modes have the potential to reach significantly higher cooling rate through resonant enhancement of both…

Optics · Physics 2017-01-18 Seunghwi Kim , Gaurav Bahl

We analyze the performance of optomechanical cooling of a mechanical resonator in the presence of a degenerate optical parametric amplifier within the optomechanical cavity, which squeezes the cavity light. We demonstrate that this allows…

Quantum Physics · Physics 2019-12-18 Muhammad Asjad , Najmeh Etehadi Abari , Stefano Zippilli , David Vitali

We theoretically study the laser cooling of cavity optomechanics when the mechanical resonance frequency and damping depend on time. In the regime of weak optomechanical coupling we extend the theory of laser cooling using an adiabatic…

Quantum Physics · Physics 2015-05-12 Marc Bienert , Pablo Barberis-Blostein

The term `laser cooling' is applied to the use of optical means to cool the motional energies of either atoms and molecules, or micromirrors. In the literature, these two strands are kept largely separate; both, however suffer from severe…

Optics · Physics 2018-06-05 André Xuereb

Optomechanical cavities in the well-resolved-sideband regime are ideally suited for the study of a myriad of quantum phenomena with mechanical systems, including backaction-evading measurements, mechanical squeezing, and generation of…

Quantum Physics · Physics 2020-05-06 Liu Qiu , Itay Shomroni , Paul Seidler , Tobias J. Kippenberg

We study the mechanical effects of light on an atom trapped in a harmonic potential when an atomic dipole transition is driven by a laser and it is strongly coupled to a mode of an optical resonator. We investigate the cooling dynamics in…

Quantum Physics · Physics 2007-09-05 Stefano Zippilli , Giovanna Morigi , Wolfgang P. Schleich

A pulsed cooling scheme for optomechanical systems is presented that is capable of cooling at much faster rates, shorter overall cooling times, and for a wider set of experimental scenarios than is possible by conventional methods. The…

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