https://doi.org/10.1140/epjd/e2017-70606-0
Regular Article
Dynamical Gaussian quantum steering in optomechanics
1 LPHE-MS, Faculty of Sciences, Mohammed V University of Rabat, 10000 Rabat, Morocco
2 Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
3 Abdus Salam International Centre for Theoretical Physics, Miramare, 34151 Trieste, Italy
4 Department of Physics, Faculty of Sciences, University Hassan II, 20000 Casablanca, Morocco
5 Centre of Physics and Mathematics (CPM), Mohammed V University of Rabat, 10000 Rabat, Morocco
a
e-mail: j.elqars@gmail.com
Received: 28 September 2016
Received in final form: 23 December 2016
Published online: 23 May 2017
Einstein-Podolski-Rosen steering is a form of quantum correlation exhibiting an intrinsic asymmetry between two entangled systems. In this paper, we propose a scheme for examining dynamical Gaussian quantum steering of two mixed mechanical modes. For this, we use two spatially separated optomechanical cavities fed by squeezed light. We work in the resolved sideband regime. Limiting to the adiabatic regime, we show that it is possible to generate dynamical Gaussian steering via a quantum fluctuations transfer from squeezed light to the mechanical modes. By an appropriate choice of the environmental parameters, one-way steering can be observed in different scenarios. Finally, comparing with entanglement – quantified by the Gaussian Rényi-2 entropy, we show that Gaussian steering is strongly sensitive to the thermal effects and always upper bounded by entanglement degree.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2017
