Comptes Rendus
no. 9-10
Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator
[Théorie classique et quantique du refroidissement photothermique en cavité dʼun oscillateur mécanique]
Juan Restrepo1 ; Julien Gabelli2 ; Cristiano Ciuti1 ; Ivan Favero1 
1 Laboratoire matériaux et phénomènes quantiques, université Paris Diderot, CNRS UMR 7162, 10, rue Alice-Domon-et-Léonie-Duquet, 75013 Paris, France
2 Laboratoire de physique des solides, université Paris-Sud, CNRS UMR 8502, Orsay, France
Comptes Rendus. Physique, Nano- and micro-optomechanical systems, Volume 12 (2011) no. 9-10, pp. 860-870.

Les effets photothermiques permettent un couplage optomécanique très efficace entre degrés de liberté mécaniques et photons. Dans le contexte du refroidissement en cavité dʼun oscillateur mécanique, une question reste ouverte : savoir si lʼon peut atteindre lʼétat quantique fondamental de lʼoscillateur à lʼaide dʼun refroidissement photothermique ? Ici nous répondons à cette question par deux traitements théoriques complémentaires : lʼun classique, lʼautre quantique. Les deux approches nous portent à conclure que : dʼabord lʼétat fondamental peut en effet être atteint par refroidissement photothermique, ensuite il peut être atteint dans un régime de faible désaccord de cavité, ce qui permet à une grande partie des photons incidents dʼentrer dans la cavité.

Photothermal effects allow very efficient optomechanical coupling between mechanical degrees of freedom and photons. In the context of cavity cooling of a mechanical oscillator, the question of if the quantum ground-state of the oscillator can be reached using photothermal back-action has been debated and remains an open question. Here we address this problem by complementary classical and quantum calculations. Both lead us to conclude that: first, the ground-state can indeed be reached using photothermal cavity cooling, second, it can be reached in a regime where the cavity detuning is small allowing a large amount of incident photons to enter the cavity.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crhy.2011.02.005
Keywords: Optomechanics, Photothermal, Optical cooling, Quantum limit, Mechanical oscillator, Quantum ground-state
Mots-clés : Optomécanique, Photothermique, Refroidissement optique, Limite quantique, Oscillateur mécanique, État quantique fondamental

Juan Restrepo 1 ; Julien Gabelli 2 ; Cristiano Ciuti 1 ; Ivan Favero 1

1 Laboratoire matériaux et phénomènes quantiques, université Paris Diderot, CNRS UMR 7162, 10, rue Alice-Domon-et-Léonie-Duquet, 75013 Paris, France
2 Laboratoire de physique des solides, université Paris-Sud, CNRS UMR 8502, Orsay, France 
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Juan Restrepo; Julien Gabelli; Cristiano Ciuti; Ivan Favero. Classical and quantum theory of photothermal cavity cooling of a mechanical oscillator. Comptes Rendus. Physique, Nano- and micro-optomechanical systems, Volume 12 (2011) no. 9-10, pp. 860-870. doi : 10.1016/j.crhy.2011.02.005. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.02.005/

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