We propose a feedback control mechanism for the squeezing of the phononic mode of a mechanical oscillator. We show how, under appropriate working conditions, a simple adiabatic approach is able to induce mechanical squeezing. We then go beyond the limitations of such a working point and demonstrate the stationary squeezing induced by using repeated measurements and reinitialization of the state of a two-level system ancilla coupled to the oscillator. Our nonadaptive feedback loop offers interesting possibilities for quantum state engineering and steering in open-system scenarios.
Squeezing of mechanical motion via qubit-assisted control / M.G. Genoni, M. Bina, S. Olivares, G. De Chiara, M. Paternostro. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 17(2015 Jan 20), pp. 013034.1-013034.9. [10.1088/1367-2630/17/1/013034]
Squeezing of mechanical motion via qubit-assisted control
M.G. Genoni;M. BinaSecondo
;S. Olivares;
2015
Abstract
We propose a feedback control mechanism for the squeezing of the phononic mode of a mechanical oscillator. We show how, under appropriate working conditions, a simple adiabatic approach is able to induce mechanical squeezing. We then go beyond the limitations of such a working point and demonstrate the stationary squeezing induced by using repeated measurements and reinitialization of the state of a two-level system ancilla coupled to the oscillator. Our nonadaptive feedback loop offers interesting possibilities for quantum state engineering and steering in open-system scenarios.File | Dimensione | Formato | |
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