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Quantum Nondemolition Squeezing of a Nanomechanical Resonator

Rusko Ruskov·Keith Schwab·Alexander N. Korotkov
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Abstract

We show that the nanoresonator position can be squeezed significantly below the ground state level by measuring the nanoresonator with a quantum point contact or a single-electron transistor and applying a periodic voltage across the detector. The mechanism of squeezing is basically a generalization of quantum nondemolition measurement of an oscillator to the case of continuous measurement by a weakly coupled detector. The quantum feedback is necessary to prevent the ``heating'' due to measurement back-action. We also discuss a procedure of experimental verification of the squeezed state.

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Rusko Ruskov, Keith Schwab, Alexander N. Korotkov. 2004-06-18. Quantum Nondemolition Squeezing of a Nanomechanical Resonator. https://doi.org/10.1109/tnano.2004.840171

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