Sharp thresholds of two-components attractive Bose–Einstein condensates with an external driving field

2010 ◽  
Vol 374 (21) ◽  
pp. 2133-2136 ◽  
Author(s):  
Zhongxue Lü ◽  
Zuhan Liu
Keyword(s):  
Driving Field ◽  
Bose Einstein ◽  
Sharp Thresholds ◽  
External Driving

Coupled electric fields in photorefractive driven liquid crystal hybrid cells – theory and numerical simulation

2016 ◽  
Vol 24 (4) ◽  
Author(s):  
P. Moszczyński ◽  
A. Walczak ◽  
P. Marciniak
Keyword(s):  
Numerical Simulation ◽  
Laser Beam ◽  
Electric Fields ◽  
Cell Response ◽  
Liquid Crystalline ◽  
Driving Field ◽  
Self Organized ◽  
Photosensitive Polymer ◽  
Photosensitive Layer ◽  
External Driving

AbstractIn cyclic articles previously published we described and analysed self-organized light fibres inside a liquid crystalline (LC) cell contained photosensitive polymer (PP) layer. Such asymmetric LC cell we call a hybrid LC cell. Light fibre arises along a laser beam path directed in plane of an LC cell. It means that a laser beam is parallel to photosensitive layer. We observed the asymmetric LC cell response on an external driving field polarization. Observation has been done for an AC field first. It is the reason we decided to carry out a detailed research for a DC driving field to obtain an LC cell response step by step. The properly prepared LC cell has been built with an isolating layer and garbage ions deletion. We proved by means of a physical model, as well as a numerical simulation that LC asymmetric response strongly depends on junction barriers between PP and LC layers. New parametric model for a junction barrier on PP/LC boundary has been proposed. Such model is very useful because of lack of proper conductivity and charge carriers of band structure data on LC material.

Collective radiation of multi-atom in cavity under the external driving field

2021 ◽  
pp. 127772
Author(s):  
Na Li ◽  
Hanwen Jiang ◽  
Xiuwen Xia ◽  
Chengjie Zhu ◽  
Shuangyuan Xie ◽  
...  
Keyword(s):  
Driving Field ◽  
External Driving

scholarly journals STATIONARY STATE ENTANGLEMENT AND TOTAL CORRELATION OF TWO QUBITS OR QUTRITS

2005 ◽  
Vol 19 (30) ◽  
pp. 1803-1811
Author(s):  
SHANG-BIN LI ◽  
JING-BO XU
Keyword(s):  
Mutual Information ◽  
Stationary State ◽  
Sufficient Condition ◽  
Stationary States ◽  
Driving Field ◽  
Total Correlation ◽  
Action Time ◽  
Damped Oscillation ◽  
External Driving

We investigate the mutual information and entanglement of stationary states of two locally driven qubits under the influence of collective dephasing. It is shown that both the mutual information and the entanglement of two qubits in the stationary state exhibit damped oscillation with the scaled action time γT of the local external driving field. It means that we can control both the entanglement and total correlation of the stationary state of two qubits by adjusting the action time of the driving field. We also consider the influence of collective dephasing on the entanglement of two qutrits and obtain the sufficient condition that the stationary state is entangled.

Absorption and fluorescence by thin molecular crystals, I. Theory

1971 ◽  
Vol 325 (1560) ◽  
pp. 1-21 ◽  
Keyword(s):  
Crystal Size ◽  
Molecular Crystals ◽  
Stationary States ◽  
Driving Field ◽  
Photon States ◽  
External Driving

A theory of exciton-photon states of molecular crystals is given to include the effect of finite crystal size. The internal and external retarded fields are calculated by summation of contributions by individual molecules and are shown compatible with the Ewald-Oseen theorem. Absorption processes (involving crystal states in an external driving field) and fluorescence (quasi-stationary states) are separately treated, and compared.

scholarly journals Plasmonic kinks and walking solitons in nonlinear lattices of metal nanoparticles

2014 ◽  
Vol 372 (2027) ◽  
pp. 20140010 ◽  
Author(s):  
Roman E. Noskov ◽  
Daria A. Smirnova ◽  
Yuri S. Kivshar
Keyword(s):  
External Field ◽  
Metallic Nanoparticles ◽  
Nonlinear Effects ◽  
Two Dimensional ◽  
Driving Field ◽  
One Dimensional ◽  
Structure And Dynamics ◽  
Nonlinear Lattices ◽  
The Impact ◽  
External Driving

We study nonlinear effects in one-dimensional (1D) arrays and two-dimensional (2D) lattices composed of metallic nanoparticles with the nonlinear Kerr-like response and an external driving field. We demonstrate the existence of families of moving solitons in 1D arrays and characterize their properties such as an average drifting velocity. We also analyse the impact of varying external field intensity and frequency on the structure and dynamics of kinks in 2D lattices. In particular, we identify the kinks with positive, negative and zero velocity as well as breathing kinks with a self-oscillating profile.

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