Dark gap solitons in exciton-polariton condensates in a periodic potential

CCUR > College of Natural Science and Engineering > College of Science > Department of Physics > journal articles > Item 987654321/41906

Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/41906

Title:	Dark gap solitons in exciton-polariton condensates in a periodic potential
Authors:	Cheng, SC (Cheng, Szu-Cheng) Chen, TW (Chen, Ting-Wei)
Contributors:	物理系
Keywords:	BOSE-EINSTEIN CONDENSATION NOBEL LECTURE MICROCAVITY GASES
Date:	2018-03-22
Issue Date:	2019-01-21 13:50:54 (UTC+8)
Abstract:	We show that dark spatial gap solitons can occur inside the band gap of an exciton-polariton condensate (EPC) in a one-dimensional periodic potential. The energy dispersions of an EPC loaded into a periodic potential show a band-gap structure. Using the effective-mass model of the complex Gross-Pitaevskii equation with pump and dissipation in an EPC in a periodic potential, dark gap solitons are demonstrated near the minimum energy points of the band center and band edge of the first and second bands, respectively. The excitation energies of dark gap solitons are below these minimum points and fall into the band gap. The spatial width of a dark gap soliton becomes smaller as the pump power is increased.
Appears in Collections:	[Department of Physics ] journal articles

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	333	View/Open

View Licence