Scientific Results

An optomechanical heat engine with feedback-controlled in-loop light

Year: 2019

Authors: Abari N.E., De Angelis GV., Zippilli S., Vitali .D

Autors Affiliation: Univ Camerino, Phys Div, Sch Sci & Technol, I-62032 Camerino, MC, Italy; Univ Isfahan, Fac Sci, Dept Phys, Esfahan 8174673441, Iran; INFN, Sez Perugia, I-06123 Perugia, Italy; CNR, INO, Largo Enrico Fermi 6, I-50125 Florence, Italy

Abstract: The dissipative properties of an optical cavity can be effectively controlled by placing it in a feedback loop where the light at the cavity output is detected and the corresponding signal is used to modulate the amplitude of a laser field which drives the cavity itself. Here we show that this effect can be exploited to improve the performance of an optomechanical heat engine which makes use of polariton excitations as working fluid. In particular we demonstrate that, by employing a positive feedback close to the instability threshold, it is possible to operate this engine also under parameters regimes which are not usable without feedback, and which may significantly ease the practical implementation of this device.


Volume: 21      Pages from: 093051-1  to: 093051-16

KeyWords: optomechanics; quantum heat engine; feedback
DOI: 10.1088/1367-2630/ab41e7

Citations: 1
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