期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.053603
关键词
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资金
- Danish Council for Independent Research under the Sapere Aude program
- Swiss National Science Foundation through the NCCR Quantum Science and Technology
- DARPA QuASAR program
- NSF [DMR-1004406]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1004406] Funding Source: National Science Foundation
We identify signatures of the intrinsic nonlinear interaction between light and mechanical motion in cavity optomechanical systems. These signatures are observable even when the cavity linewidth exceeds the optomechanical coupling rate. A strong laser drive red detuned by twice the mechanical frequency from the cavity resonance frequency makes two-phonon processes resonant, which leads to a nonlinear version of optomechanically induced transparency. This effect provides a new method of measuring the average phonon number of the mechanical oscillator. Furthermore, we show that if the strong laser drive is detuned by half the mechanical frequency, optomechanically induced transparency also occurs due to resonant two-photon processes. The cavity response to a second probe drive is in this case nonlinear in the probe power. These effects should be observable with optomechanical coupling strengths that have already been realized in experiments.
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