Single-Phonon Addition and Subtraction to a Mechanical Thermal State

• URL: http://arxiv.org/abs/2006.11599v3
• Date: Fri, 22 Jan 2021 11:31:31 GMT
• Title: Single-Phonon Addition and Subtraction to a Mechanical Thermal State
• Authors: Georg Enzian, John J. Price, Lars Freisem, Joshua Nunn, Jiri Janousek, Ben C. Buchler, Ping Koy Lam, Michael R. Vanner
• Abstract summary: Adding or subtracting a single quantum of excitation to a thermal state of a bosonic system has the counter-intuitive effect of approximately doubling its mean occupation. We perform the first experimental demonstration of this effect outside optics by implementing single-phonon addition and subtraction. We observe this doubling of the mechanical thermal fluctuations to a high precision using a detection scheme that combines single-photon counting and optical heterodyne detection.
• Score: 0.5980627596223345
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Adding or subtracting a single quantum of excitation to a thermal state of a bosonic system has the counter-intuitive effect of approximately doubling its mean occupation. We perform the first experimental demonstration of this effect outside optics by implementing single-phonon addition and subtraction to a thermal state of a mechanical oscillator via Brillouin optomechanics in an optical whispering-gallery microresonator. Using a detection scheme that combines single-photon counting and optical heterodyne detection, we observe this doubling of the mechanical thermal fluctuations to a high precision. The capabilities of this joint click-dyne detection scheme adds a significant new dimension for optomechanical quantum science and applications.

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