Pulsed excitation dynamics of an optomechanical crystal resonator near its quantum ground-state of motion
By S. Meenehan, Justin D. Cohen, Gregory S. MacCabe, F. Marsili, M. Shaw, Oskar J. Painter. 2015
152 citations recorded by the source corpus.
Using pulsed optical excitation and read-out along with single phonon counting techniques, we measure the transient back-action, heating, and damping dynamics of a nanoscale silicon optomechanical crystal cavity mounted in a dilution refrigerator at a base temperature of 11mK. In addition to observing a slow (~740ns) turn-on time for the optical-absorption-induced hot phonon bath, we measure for the 5.6GHz `breathing' acoustic mode of the cavity an initial phonon occupancy as low as 0.021 +- 0.007 (mode temperature = 70mK) and an intrinsic mechanical decay rate of 328 +- 14 Hz (mechanical Q-factor = 1.7x10^7). These measurements demonstrate the feasibility of using short pulsed measurements for a variety of quantum optomechanical applications despite the presence of steady-state optical heating.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/9fd5e2f1a3d86caa74bffaee360b385c7c8f2325
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Ultralow-Noise SiN Trampoline Resonators for Sensing and Optomechanics (2015, background): “Furthermore, integrating with quantum electronics and/or optical resonators has provided (among other things) access to a regime in which quantum effects play a central role in the mechanical element’s motion [8–14].”
- Macroscopic quantum states: Measures, fragility, and implementations (2017, background): “This includes ground state cooling of the mechanical motion45, electromechanical 45 Chan et al. (2011); Meenehan et al. (2015); O’Connell et al. (2010); Teufel et al. (2011) 48 entanglement (Palomaki et al., 2013) or squeezing of a micromechanical state (Wollman et al., 2015).”
- Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics (2018, background): “In cold systems, it is instead set by the cooling power of the refrigerator and the heating of the mechanical system [128].”