Enhancing Optomechanical Coupling via the Josephson Effect

T.T. Heikkila, F. Massel, J. Tuorila, R. Khan, Mika A. Sillanpää

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

68 Sitaatiot (Scopus)
144 Lataukset (Pure)

Abstrakti

Cavity optomechanics is showing promise for studying quantum mechanics in large systems. However, the smallness of the radiation-pressure coupling is a serious hindrance. Here we show how the charge tuning of the Josephson inductance in a single-Cooper-pair transistor can be exploited to arrange a strong radiation-pressure-type coupling g0 between mechanical and microwave resonators. In a certain limit of parameters, such a coupling can also be seen as a qubit-mediated coupling of two resonators. We show that this scheme allows reaching extremely high g0. Contrary to the recent proposals for exploiting the nonlinearity of a large radiation-pressure coupling, the main nonlinearity in this setup originates from a cross-Kerr type of coupling between the resonators, where the cavity refractive index depends on the phonon number. The presence of this coupling will allow accessing the individual phonon numbers via the measurement of the cavity.
AlkuperäiskieliEnglanti
Artikkeli203603
Sivut1-6
Sivumäärä6
JulkaisuPhysical Review Letters
Vuosikerta112
Numero20
DOI - pysyväislinkit
TilaJulkaistu - 23 toukokuuta 2014
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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