Journal
PHYSICAL REVIEW A
Volume 95, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.023822
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Funding
- Army Research Office [W911NF1410343, W911NF1110297]
- Defense Advanced Research Projects Agency under the QuASAR program
- National Science Foundation [ECCS-1610674]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1610674] Funding Source: National Science Foundation
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Temperature fluctuations of an optical resonator underlie a fundamental limit of its cavity stability. Here we show that the fundamental temperature fluctuations of a high-Q microresonator can be suppressed remarkably by pure optical means without cooling the device temperature. An optical wave launched into the cavity is able to produce strong photothermal backaction which dramatically suppresses the spectral intensity of temperature fluctuations and squeezes its overall level by orders of magnitude. The proposed photothermal temperature squeezing is expected to significantly improve the stability of optical resonances, with potentially profound impact on broad applications of high-Q cavities in sensing, metrology, and nonlinear and quantum optics.
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