Optomechanical oscillator controlled by variation in its heat bath temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73581233" target="_blank" >RIV/61989592:15310/17:73581233 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10368902

Výsledek na webu

<a href="https://journals.aps.org/pra/pdf/10.1103/PhysRevA.95.042105" target="_blank" >https://journals.aps.org/pra/pdf/10.1103/PhysRevA.95.042105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.95.042105" target="_blank" >10.1103/PhysRevA.95.042105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optomechanical oscillator controlled by variation in its heat bath temperature

Popis výsledku v původním jazyce

We propose a generation of a low-noise state of optomechanical oscillator by a temperature-dependent force. We analyze the situation in which a quantum optomechanical oscillator (denoted as themembrane) is driven by an external force (produced by the piston). Both systems are embedded in a common heat bath at certain temperature T. The driving force the piston exerts on the membrane is bath temperature dependent. Initially, for T = T-0, the piston is linearly coupled to the membrane. The bath temperature is then reversibly changed to T not equal T-0. The change of temperature shifts the membrane, but simultaneously also increases its fluctuations. The resulting equilibrium state of the membrane is analyzed from the point of view of mechanical, as well as of thermodynamic, characteristics. We compare these characteristics of membrane and derive their intimate connection. Next, we cool down the thermal noise of the membrane, bringing it out of equilibrium, still being in the contact with heat bath. This cooling retains the effective canonical Gibbs state with the effective temperature T*. In such case we study the analogs of the equilibrium quantities for low-noise mechanical states of the membrane.

Název v anglickém jazyce

Optomechanical oscillator controlled by variation in its heat bath temperature

Popis výsledku anglicky

We propose a generation of a low-noise state of optomechanical oscillator by a temperature-dependent force. We analyze the situation in which a quantum optomechanical oscillator (denoted as themembrane) is driven by an external force (produced by the piston). Both systems are embedded in a common heat bath at certain temperature T. The driving force the piston exerts on the membrane is bath temperature dependent. Initially, for T = T-0, the piston is linearly coupled to the membrane. The bath temperature is then reversibly changed to T not equal T-0. The change of temperature shifts the membrane, but simultaneously also increases its fluctuations. The resulting equilibrium state of the membrane is analyzed from the point of view of mechanical, as well as of thermodynamic, characteristics. We compare these characteristics of membrane and derive their intimate connection. Next, we cool down the thermal noise of the membrane, bringing it out of equilibrium, still being in the contact with heat bath. This cooling retains the effective canonical Gibbs state with the effective temperature T*. In such case we study the analogs of the equilibrium quantities for low-noise mechanical states of the membrane.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review A

ISSN

2469-9926

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

"042105-1"-"042105-9"

Kód UT WoS článku

000399378600003

EID výsledku v databázi Scopus

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