Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction

Abstract Realizing quantum mechanical behavior in micro- and nanomechanical resonators has attracted continuous research effort. One of the ways for observing quantum nature of mechanical objects is via the mechanism of phonon blockade. Here, we show that phonon blockade could be achieved in a syste...

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Autores principales:	Bijita Sarma, Amarendra K. Sarma
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Mechanical Resonator Cavity Optomechanics Nanomechanical Resonators Average Phonon Number Second-order Correlation Function Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0926f4aff0254293a3c48d6555bbfdd4
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id	oai:doaj.org-article:0926f4aff0254293a3c48d6555bbfdd4
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spelling	oai:doaj.org-article:0926f4aff0254293a3c48d6555bbfdd42021-12-02T15:09:12ZTunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction10.1038/s41598-018-32743-12045-2322https://doaj.org/article/0926f4aff0254293a3c48d6555bbfdd42018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-32743-1https://doaj.org/toc/2045-2322Abstract Realizing quantum mechanical behavior in micro- and nanomechanical resonators has attracted continuous research effort. One of the ways for observing quantum nature of mechanical objects is via the mechanism of phonon blockade. Here, we show that phonon blockade could be achieved in a system of two weakly nonlinear mechanical resonators coupled by a Coulomb interaction. The optimal blockade arises as a result of the destructive quantum interference between paths leading to two-phonon excitation. It is observed that, in comparison to a single drive applied on one mechanical resonator, driving both the resonators can be beneficial in many aspects; such as, in terms of the temperature sensitivity of phonon blockade and also with regard to the tunability, by controlling the amplitude and the phase of the second drive externally. We also show that via a radiation pressure induced coupling in an optomechanical cavity, phonon correlations can be measured indirectly in terms of photon correlations of the cavity mode.Bijita SarmaAmarendra K. SarmaNature PortfolioarticleMechanical ResonatorCavity OptomechanicsNanomechanical ResonatorsAverage Phonon NumberSecond-order Correlation FunctionMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mechanical Resonator Cavity Optomechanics Nanomechanical Resonators Average Phonon Number Second-order Correlation Function Medicine R Science Q
spellingShingle	Mechanical Resonator Cavity Optomechanics Nanomechanical Resonators Average Phonon Number Second-order Correlation Function Medicine R Science Q Bijita Sarma Amarendra K. Sarma Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
description	Abstract Realizing quantum mechanical behavior in micro- and nanomechanical resonators has attracted continuous research effort. One of the ways for observing quantum nature of mechanical objects is via the mechanism of phonon blockade. Here, we show that phonon blockade could be achieved in a system of two weakly nonlinear mechanical resonators coupled by a Coulomb interaction. The optimal blockade arises as a result of the destructive quantum interference between paths leading to two-phonon excitation. It is observed that, in comparison to a single drive applied on one mechanical resonator, driving both the resonators can be beneficial in many aspects; such as, in terms of the temperature sensitivity of phonon blockade and also with regard to the tunability, by controlling the amplitude and the phase of the second drive externally. We also show that via a radiation pressure induced coupling in an optomechanical cavity, phonon correlations can be measured indirectly in terms of photon correlations of the cavity mode.
format	article
author	Bijita Sarma Amarendra K. Sarma
author_facet	Bijita Sarma Amarendra K. Sarma
author_sort	Bijita Sarma
title	Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
title_short	Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
title_full	Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
title_fullStr	Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
title_full_unstemmed	Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction
title_sort	tunable phonon blockade in weakly nonlinear coupled mechanical resonators via coulomb interaction
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/0926f4aff0254293a3c48d6555bbfdd4
work_keys_str_mv	AT bijitasarma tunablephononblockadeinweaklynonlinearcoupledmechanicalresonatorsviacoulombinteraction AT amarendraksarma tunablephononblockadeinweaklynonlinearcoupledmechanicalresonatorsviacoulombinteraction
_version_	1718387856855007232

Tunable phonon blockade in weakly nonlinear coupled mechanical resonators via Coulomb interaction

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