scholarly journals Enhancement of steady-state bosonic squeezing and entanglement in a dissipative optomechanical system

2018 ◽  
Vol 26 (11) ◽  
pp. 13783 ◽  
Author(s):  
Chang-Geng Liao ◽  
Hong Xie ◽  
Xiao Shang ◽  
Zhi-Hua Chen ◽  
Xiu-Min Lin
Keyword(s):  
Steady State ◽  
Optomechanical System

Steady-state quantum correlation measurement in hybrid optomechanical systems

2020 ◽  
pp. 2050046
Author(s):  
Tesfay Gebremariam Tesfahannes ◽  
Merkebu Dereje Getahune
Keyword(s):  
Correlation Function ◽  
Steady State ◽  
Quantum Entanglement ◽  
Quantum Correlation ◽  
Optical Cavity ◽  
Quantum Correlations ◽  
Correlation Measurement ◽  
Atomic Ensemble ◽  
Optomechanical System ◽  
Optomechanical Systems

In this paper, we investigate the steady-state of quantum correlation measurement of hybrid optomechanical systems. The first system consists of a single optomechanical system simultaneously coupled to a mechanical oscillator. While the second system is a hybrid optomechanical system consisting of an atomic ensemble placed in between the optical cavity and mirror. For both optomechanical systems, we formulate the Hamiltonian and the explicit expression of the covariance matrix leading to the dynamic of the system. Under the linearization approximation, we investigate the steady-state quantum correlations which are quantified through the correlation function of non-Hermitian operators, while the logarithmic negativity is used to quantify the amount of quantum entanglement between the subsystems. Furthermore, our proposed quantum correlation function can be used to quantify the entangled bipartite states that are correlative and transfer information. It is found that the transfer of quantum correlations between the subsystem is related to the detuning and coupling strength. Our results provide a realistic route toward remote quantum entanglement detection and a framework of future realistic fiber-optic quantum network operating applications.

Steady-state control in an unstable optomechanical system

2014 ◽  
Vol 90 (4) ◽  
Author(s):  
Nicolas L. Naumann ◽  
Sven M. Hein ◽  
Andreas Knorr ◽  
Julia Kabuss
Keyword(s):  
Steady State ◽  
State Control ◽  
Optomechanical System ◽  
Steady State Control

Topological phase transition in cavity optomechanical system with periodical modulation

2022 ◽  
Author(s):  
Zhi-Xu Zhang ◽  
Lu Qi ◽  
Wen-Xue Cui ◽  
Shou Zhang ◽  
Hong-Fu Wang
Keyword(s):  
Phase Transition ◽  
Steady State ◽  
Decay Rates ◽  
Topological Phase ◽  
State Equations ◽  
Optomechanical System ◽  
Topological Phase Transition ◽  
Topological Effect ◽  
Gap States ◽  
Cavity Optomechanical System

Abstract We investigate the topological phase transition and the enhanced topological effect in cavity optomechanical system with periodical modulation. By calculating the steady-state equations of the system, the steady-state conditions of cavity fields and the restricted conditions of effective optomechanical couplings are demonstrated. It is found that the cavity optomechanical system can be modulated to different topological Su-Schrieffer-Heeger (SSH) phases via designing the optomechanical couplings legitimately. Meanwhile, combining the effective optomechanical couplings and the probability distributions of gap states, we reveal the topological phase transition between trivial SSH phase and nontrivial SSH phase via adjusting the decay rates of cavity fields. Moreover, we find that the enhanced topological effect of gap states can be achieved by enlarging the size of system and adjusting the decay rates of cavity fields.

scholarly journals Steady-state mechanical squeezing in a double-cavity optomechanical system

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Dong-Yang Wang ◽  
Cheng-Hua Bai ◽  
Hong-Fu Wang ◽  
Ai-Dong Zhu ◽  
Shou Zhang
Keyword(s):  
Steady State ◽  
Optomechanical System ◽  
Cavity Optomechanical System ◽  
Mechanical Squeezing

Geometrical shapes effects of optical cavity on entanglement dynamics of optomechanical systems: A numerical analysis

2021 ◽  
pp. 1-11
Author(s):  
Mehrad Gavahi ◽  
Hong Rong Li
Keyword(s):  
Steady State ◽  
Numerical Analysis ◽  
Optical Cavity ◽  
Entanglement Dynamics ◽  
Optomechanical System ◽  
Optomechanical Systems ◽  
Optical Cavities ◽  
Mechanical Coupling ◽  
Geometrical Shapes ◽  
Mechanical Oscillators

In this work, a model of optomechanical system was investigated by analyzing the entanglement dynamics of two related mechanical oscillators in a modified system. Geometrical shapes effects of optical cavities on entanglement of a representative optomechanical system were investigated by means of performing numerical analysis. It was signified that the steady-state or the dynamic behavior of optomechanical engagement could be created owing to the strength of mechanical pairs, which are strong towards the oscillating temperature. In addition, the mentioned entanglement dynamics were seen to be entirely related to the natural state’s stability. Furthermore, rendering the mechanical damping effects, the critical mechanical coupling strength-related analytical expression, where the transition from a steady state to a dynamic clamp occurs, was reported. In the studied system, two identical mechanical oscillators were formed in different conditions of the optical cavities shapes.

Transmissivity of optomechanical system containing a two-level system

2019 ◽  
Vol 33 (22) ◽  
pp. 1950252
Author(s):  
K. Farooq ◽  
H. M. Noor ul Huda Khan Asghar ◽  
M. A. Khan ◽  
Khalil Khan
Keyword(s):  
Steady State ◽  
Optical Transmission ◽  
Research Field ◽  
External Fields ◽  
Level System ◽  
Cavity Field ◽  
Optomechanical System ◽  
Level Atom ◽  
Quantum Optomechanics ◽  
Steady State Solutions

The field of quantum optomechanics is newly grooming research field, availed good attention in the last couple of years. Here, we theoretically study the system of optomechanics containing a two-level atom, which is coupled to the cavity field, and driven coherently by external fields. Analytical results for the system’s operator dynamics, steady state solutions and transmissivity of optomechanical system are calculated. Transmission (optical response) from the optomechanical system shows some useful information about the current optomechanical system. Particularly, [Formula: see text] = [Formula: see text]-g0([Formula: see text] + [Formula: see text]) is a crucial quantity in optomechanics, focused as main parameters in this paper. Optical transmission is studied in two regions. The first region (case) (i) when [Formula: see text] = [Formula: see text] - [Formula: see text], and in second region (case), (ii) [Formula: see text] = [Formula: see text] + [Formula: see text]. The transmission is examined and discussed with respect to the mechanical frequency of the oscillating mirror.

Manipulating the steady-state entanglement via three-level atoms in a hybrid levitated optomechanical system

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Guoyao Li ◽  
Wenjie Nie ◽  
Yu Wu ◽  
Qinghong Liao ◽  
Aixi Chen ◽  
...  
Keyword(s):  
Steady State ◽  
Optomechanical System

scholarly journals Selective entanglement in a two-mode optomechanical system

2014 ◽  
Vol 12 (04) ◽  
pp. 1450024 ◽  
Author(s):  
Neha Aggarwal ◽  
Kamanasish Debnath ◽  
Sonam Mahajan ◽  
Aranya B. Bhattacherjee ◽  
Man Mohan
Keyword(s):  
Quantum Information ◽  
Steady State ◽  
Continuous Variable ◽  
Proper Choice ◽  
Optomechanical System ◽  
System Parameters ◽  
Optical Modes ◽  
Optomechanical Cavity

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.

Sign in / Sign up

Export Citation Format

Share Document