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9 September 2019 Playing quantum noise on a nanomechanical string (Conference Presentation)
Dalziel J. Wilson, Tobias J. Kippenberg, Vivishek Sudhir, Amir H. Ghadimi, Mohammad J. Bereyhi, Sergey Federov, Nils J. Engelsen, Ryan Schilling, Hendrik Shuetz
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Proceedings Volume 11083, Optical Trapping and Optical Micromanipulation XVI; 110830V (2019) https://doi.org/10.1117/12.2531545
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States
Abstract
Nanomechanical resonators are exquisite force sensors and have recently been used to “feel” the vacuum fluctuations of a laser field. I’ll describe a system consisting of a glass nanostring coupled to an optical microcavity and how it has been used to not only sense radiation pressure shot noise, but also squeeze it, to cool a vibration of the string to near its ground state, and to witness its zero-point energy as motional sideband asymmetry—all long-standing goals in the field of optomechanics. Underlying these advances are new insights into dissipation of nanomechanical resonators. Combining strain and mode-shape engineering, we've recently fabricated strings with effective masses of picograms, frequencies of megahertz, and quality factors approaching 1 billion at room temperature. These numbers spark the imagination, inviting speculation about applications ranging from ultrasensitive accelerometry to tests of quantum collapse models.
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Dalziel J. Wilson, Tobias J. Kippenberg, Vivishek Sudhir, Amir H. Ghadimi, Mohammad J. Bereyhi, Sergey Federov, Nils J. Engelsen, Ryan Schilling, and Hendrik Shuetz "Playing quantum noise on a nanomechanical string (Conference Presentation)", Proc. SPIE 11083, Optical Trapping and Optical Micromanipulation XVI, 110830V (9 September 2019); https://doi.org/10.1117/12.2531545
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KEYWORDS
Resonators
Glasses
Optical microcavities
Optomechanical design
Sensors
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