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Laser-like Instabilities in Quantum Nano-electromechanical Systems

S. D. Bennett·A. A. Clerk
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Abstract

We discuss negative damping regimes in quantum nano-electromechanical systems formed by coupling a mechanical oscillator to a single-electron transistor (normal or superconducting). Using an analogy to a laser with a tunable atom-field coupling, we demonstrate how these effects scale with system parameters. We also discuss the fluctuation physics of both the oscillator and the single-electron transistor in this regime, and the degree to which the oscillator motion is coherent.

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S. D. Bennett, A. A. Clerk. 2006-09-18. Laser-like Instabilities in Quantum Nano-electromechanical Systems. https://doi.org/10.1103/physrevb.74.201301

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