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We characterize the frequency instability and single-sideband phase noise of chip-scale optomechanically-driven oscillators, with integrated Ge photoreceivers. At 400-μ\ν, an open-loop frequency instability at 10"8 is observed, with −125 dBc/Hz phase noise at 10-kHz offset.
Ground state cooling of massive mechanical objects remains a difficult task restricted by the unresolved mechanical sidebands. We propose an optomechanically-induced-transparency cooling scheme to achieve ground state cooling of mechanical motion without the resolved sideband condition in a pure optomechanical system with two mechanical modes coupled to the same optical cavity mode. We show...
We demonstrate a chip-scale slot-type photonic crystal optomechanical oscillator fully integrated with an on-chip waveguide Ge photoreceiver, which exhibits high-harmonic tunable RF oscillations and high-quality optical resonances with controlled detuned continuous-wave laser drive.
We demonstrate strong anharmonicity of the polariton dressed states in a highly dissipative cavity quantum electrodynamics system via dark state resonances. Vacuum Rabi oscillation and photon blockade occur even for decay-to-interaction rate ratio exceeding 100.
We propose uniquely dynamically-modulated dissipative cooling scheme in strong optomechanical coupling, which significantly enhances the cooling process. This overcomes quantum backaction and instantaneous phonon occupations below the steady-state cooling limit can be achieved.
We describe coupled-cavity scheme to achieve ground-state cooling of mechanical motion in highly-unresolved sideband regimes. Through EIT lineshapes, both quantum Langevin and master equations confirm the quantum noise characteristics and achieve κ/ωm greater than 104.
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