Cited by 2.3kOpen Access
Stanford Medicine
ORCID: 0000-0001-6176-1274Publishes on Photonic and Optical Devices, Mechanical and Optical Resonators, Advanced Fiber Laser Technologies. 251 papers and 10.4k citations.
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In this Letter we use resolved sideband laser cooling to cool a mesoscopic mechanical resonator to near its quantum ground state (phonon occupancy 2.6±0.2), and observe the motional sidebands generated on a second probe laser. Asymmetry in the sideband amplitudes provides a direct measure of the displacement noise power associated with quantum zero-point fluctuations of the nanomechanical resonator, and allows for an intrinsic calibration of the phonon occupation number.