scholarly journals Entanglement of microwave-optical modes in a strongly coupled electro-optomechanical system

2020 ◽  
Vol 101 (3) ◽  
Author(s):  
Changchun Zhong ◽  
Xu Han ◽  
Hong X. Tang ◽  
Liang Jiang
Keyword(s):  
Optomechanical System ◽  
Strongly Coupled ◽  
Optical Modes

scholarly journals Tunable induced transparency and Fano-resonance in double cavity optomechanical system

2021 ◽  
Vol 4 (1) ◽  
pp. 019-025
Author(s):  
Samanta Anjan ◽  
Mukherjee Kousik ◽  
Jana Paresh Chandra
Keyword(s):  
Line Shape ◽  
Fano Resonance ◽  
Optical Switches ◽  
Output Spectrum ◽  
Double Line ◽  
Optomechanical System ◽  
Optical Modes ◽  
Cavity System ◽  
Induced Transparency ◽  
System Coupling

We analyze optomechanically induced Transparency and asymmetric Fano-line shape Profile in a two-mode cavity system, coupling at weak and strong coupling regimes. The model system consists of one mechanical mode and two optical modes. The transmission shows nonreciprocal behavior. Both the forward transmission and backward reflection for the system are analyzed for both optic-optic and mechanical-optic cavities by considering various system parameters. The output spectra lead to sharp asymmetric Fano-resonance and tunable transparency. Double line-shape profile is observed in the output Spectrum. Our proposal provides a new platform for application in quantum telecommunications and a photonic device like optical Switches.

Bi-directional photonic switch and optical data storage in a hybrid optomechanical system

2021 ◽  
Author(s):  
Surabhi Yadav ◽  
Aranya B Bhattacherjee
Keyword(s):  
Solid State ◽  
Data Storage ◽  
Optical Cavity ◽  
Acoustic Mode ◽  
Optical Data Storage ◽  
Optical Data ◽  
Optomechanical System ◽  
Photonic Switch ◽  
Optical Modes ◽  
Optical Nonreciprocity

We propose to achieve quantum optical nonreciprocity in a hybrid qubit-optomechanical solid-state system. A two-level system (qubit) is coupled to a mechanically compliant mirror (via the linear Jaynes–Cummings interaction) placed in the middle of a solid-state optical cavity. We show for the first time that the generated optical bistability exhibits a bi-directional photonic switch, making the device a suitable candidate for a duplex communication system. On further exploring the fluctuation dynamics of the system, we found that the proposed device breaks the symmetry between forward and backward propagating optical modes (optical nonreciprocity), which can be controlled by tuning the various system parameters, including the qubit, which emerges as a new handle. The device thus behaves like an optical isolator and hence can store optical data in the acoustic mode, which can be retrieved later.

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.

scholarly journals Nonclassical correlations in a two-mode optomechanical system

2016 ◽  
Vol 30 (20) ◽  
pp. 1650134 ◽  
Author(s):  
J. El Qars ◽  
M. Daoud ◽  
R. Ahl Laamara
Keyword(s):  
Quantum Correlations ◽  
Optomechanical System ◽  
Squeezed Light ◽  
Wide Range ◽  
Optical Modes ◽  
System Temperature ◽  
Optomechanical Coupling ◽  
Two Hybrid

The pairwise quantum correlations in a tripartite optomechanical system comprising a mechanical mode and two optical modes are analyzed. The Simon criterion is used as a witness of the separability. Whereas the Gaussian discord is employed to capture the quantumness of correlations. Both entanglement and Gaussian discord are evaluated as functions of the parameters characterizing the environment and the system (temperature, squeezing and optomechanical coupling). We work in the resolved-sideband regime. We show that it is possible to reach three simultaneous bipartite entanglements via the quantum correlations transfer from the squeezed light to the system. While, even without squeezed light, the quantumness of correlations can be captured simultaneously between the three modes for a very wide range of parameters. Specifically, we find that the two optical modes exhibit more quantum correlations in comparison with the entangled mechanical–optical modes. Finally, unlike the two hybrid subsystems, the purely optical one seems more resilient against the environmental destructive effects.

Direct and Indirect Effects of Filling on Electronic Structure of Skutterudites

2009 ◽  
Vol 1166 ◽  
Author(s):  
Daehyun Wee ◽  
Boris Kozinsky ◽  
Fornari Marco ◽  
Nicola Marzari
Keyword(s):  
Indirect Effects ◽  
Phonon Dispersion ◽  
Direct And Indirect Effects ◽  
Structural Effects ◽  
Phonon Dispersion Curves ◽  
Strongly Coupled ◽  
The Family ◽  
Optical Modes ◽  
Primary Focus ◽  
Global And Local

AbstractWe perform ab-initio computations to investigate the family of CoSb3 skutterudites in an attempt to develop deeper understanding of the effect of fillers. Primary focus is on Ba-filled CoSb3 systems, while Ca and Sr-filled systems are also compared for checking consistency. We analyze both global and local structural effects of filling. We show the specific deformation of Sb network introduced by the filler. Such a deformation is localized around the filler site since soft Sb rings accommodate the distortion. Rearrangement of Sb atoms affects the band structures, and we perform additional analysis to clarify the effect of volume on the band gap. Phonon dispersions are briefly discussed, and filler-dominated vibrations are identified. These modes form the first optical modes at Γ. They manifest themselves in phonon dispersion curves as flat lines, showing that they are localized, while filler vibration is strongly coupled with nearby Sb atoms.

scholarly journals Simple Composite Dipole Model for the Optical Modes of Strongly-Coupled Plasmonic Nanoparticle Aggregates

2012 ◽  
Vol 116 (47) ◽  
pp. 25044-25051 ◽  
Author(s):  
Richard W. Taylor ◽  
Rubén Esteban ◽  
Sumeet Mahajan ◽  
Roger Coulston ◽  
Oren A. Scherman ◽  
...  
Keyword(s):  
Dipole Model ◽  
Strongly Coupled ◽  
Plasmonic Nanoparticle ◽  
Nanoparticle Aggregates ◽  
Optical Modes

scholarly journals Dissipative Kerr solitons in a photonic dimer on both sides of exceptional point

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
K. Komagata ◽  
A. Tusnin ◽  
J. Riemensberger ◽  
M. Churaev ◽  
H. Guo ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Nonlinear Effects ◽  
Dark Soliton ◽  
Coupled Systems ◽  
Exceptional Point ◽  
Strongly Coupled ◽  
Exceptional Points ◽  
On Demand ◽  
Optical Modes

AbstractExceptional points are a ubiquitous concept widely present in driven-dissipative coupled systems described by a non-Hermitian Hamiltonian. To date, exceptional points have been extensively examined in the systems supporting only a few optical modes, thereby leaving the observation of collective (multimode) effects outside of the scope of the study. In the present paper, we analyze the role of exceptional points in nonlinear multimode photonics. Specifically, we provide insights into the complex nonlinear dynamics arising in a continuous wave-driven pair of strongly coupled microresonators. Investigating this system, we demonstrate mechanisms of dissipative Kerr soliton formation in two fundamentally different regimes separated by a line of exceptional points. Highlighting the diversity of emergent nonlinear effects, we describe the on-demand generation of single-solitons, perfect soliton crystals and bright-dark soliton pairs on either side of exceptional points.

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