Selective entanglement in a two-mode optomechanical system

Abstract

We analyze an optomechanical system formed by a mechanical mode and the two optical modes of an optomechanical cavity for the realization of a strongly quantum correlated three-mode system. We show that the steady state of the system shows three possible bipartite continuous variable (CV) entanglements in an experimentally accessible parameter regime, which are robust against temperature. We further show that selective entanglement between the mechanical mode and any of the two optical modes is also possible by the proper choice of the system parameters. Such a two-mode optomechanical system can be used for the realization of CV quantum information interfaces and networks.

Optical multistability and Fano line-shape control via mode coupling in whispering-gallery-mode microresonator optomechanics

“…The marked achievements have been made in those optical components, such as ultrahigh-precision measurement6, gravitation-wave detection7, quantum information processing (QIP)8910, higher-order sidebands111213, optical nonlinearity141516, mechanical parity-time symmetry171819 and -broken chaos20, quantum entanglement212223242526, optomechanically induced transparency (OMIT)272829303132333435, and optomechanically induced stochastic resonance (OMISR)36, and many others12345.…”

Optical and Microcavity Modes Entanglement by Means of Plasmonic Opto-Mechanical System

“…3 is a nonlinear equation. To linearize this equation, one can use the fluctuations associated with the field modes as q = <q> + δq, where <q> stands for field average in the steady-state condition and δq presents the fluctuation of the considered mode [14,17]. We can certify the linearized approach because of the following reasons.…”

“…Another interesting point is the optoelectronic system stability. In this regard, one can examine the A ij Eigenvalues to identify the system stability, having the knowledge that for a stable system all of the real parts of the contributed Eigenvalue should be negative [13,14]. Hence, we are ready to analyze the quantum features of the presented system.…”

“…Also, for generating an entangled state, which is the base of this type of studies, mainly the optomechanical system is used. This system generates the entanglement between optical cavity (OC) and microwave (MW) cavity [13][14][15][16][17]. In this system, which uses the mechanical part, some photos generated due to the thermal effect in high temperature restrict the system's operation at high temperature.…”

“…Indeed, the thermal photon numbers generated in the mechanical subsystem limits the system. Some engineering works have been conducted on the mechanic bandwidth engineering to fix this problem [14][15][16]. In fact, without the mechanical's bandwidth or sideband engineering, the thermal photons strongly restrict the entanglement between cavity modes.…”