Data di Pubblicazione:
2015
Citazione:
Nonlinearity and nonclassicality in a nanomechanical resonator / B. Teklu, A. Ferraro, M. Paternostro, M.G.A. Paris. - In: EPJ QUANTUM TECHNOLOGY. - ISSN 2196-0763. - 2:16(2015), pp. 1-10. [10.1140/epjqt/s40507-015-0029-x]
Abstract:
We address quantitatively the relationship between the nonlinearity of a mechanical
resonator and the nonclassicality of its ground state. In particular, we analyze the
nonclassical properties of the nonlinear Duffing oscillator (being driven or not) as a
paradigmatic example of a nonlinear nanomechanical resonator. We first discuss how
to quantify the nonlinearity of this system and then show that the nonclassicality of
the ground state, as measured by the volume occupied by the negative part of the
Wigner function, monotonically increases with the nonlinearity in all the working
regimes addressed in our study. Our results show quantitatively that nonlinearity is a
resource to create nonclassical states in mechanical systems.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
nanomechanics; nonclassicality; nonlinearity
Elenco autori:
B. Teklu, A. Ferraro, M. Paternostro, M.G.A. Paris
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