Exciton correlations and input-output relations in non-equilibrium exciton superfluids

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Exciton correlations and input-output relations in non-equilibrium exciton superfluids
	Ye, JW ; Sun, FD ; Yu, YX ; Liu, WM
刊名	ANNALS OF PHYSICS
	2013
卷号	329 页码:51
关键词	Photoluminescence measurements Transport measurements Violations of the fluctuation and dissipation theorem Input-output relations Non-equilibrium superfluid Equilibrium dissipative superfluid
ISSN号	0003-4916
通讯作者	Ye, JW (reprint author), Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
中文摘要	The photoluminescence (PL) measurements on photons and the transport measurements on excitons are the two types of independent and complementary detection tools to search for possible exciton superfluids in electron hole semi-conductor bilayer systems. In fact, it was believed that the transport measurements can provide more direct evidences on superfluids than the spectroscopic measurements. It is important to establish the relations between the two kinds of measurements. In this paper, using quantum Heisenberg-Langevin equations, we establish such a connection by calculating various exciton correlation functions in the putative exciton superfluids. These correlation functions include both normal and anomalous greater, lesser, advanced, retarded, and time-ordered exciton Green functions and also various two exciton correlation functions. We also evaluate the corresponding normal and anomalous spectral weights and the Keldysh distribution functions. We stress the violations of the fluctuation and dissipation theorem among these various exciton correlation functions in the non-equilibrium exciton superfluids. We also explore the input output relations between various exciton correlation functions and those of emitted photons such as the angle resolved photon power spectrum, phase sensitive two mode squeezing spectrum and two photon correlations. Applications to possible superfluids in the exciton-polariton systems are also mentioned. For a comparison, using conventional imaginary time formalism, we also calculate all the exciton correlation functions in an equilibrium dissipative exciton superfluid in the electron-electron coupled semi-conductor bilayers at the quantum Hall regime at the total filling factor nu(T) = 1. We stress the analogies and also important differences between the correlations functions in the two exciton superfluid systems. (C) 2012 Elsevier Inc. All rights reserved.
资助信息	Beijing Municipal Commission of Education, at KITP [PHR201107121]; NSF [PHY11-25915]; [NSF-DMR-1161497]; [NSFC-11074173]; [NSFC-11174210]; [NSFC-10874235]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56983]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Ye, JW,Sun, FD,Yu, YX,et al. Exciton correlations and input-output relations in non-equilibrium exciton superfluids[J]. ANNALS OF PHYSICS,2013,329:51.
APA	Ye, JW,Sun, FD,Yu, YX,&Liu, WM.(2013).Exciton correlations and input-output relations in non-equilibrium exciton superfluids.ANNALS OF PHYSICS,329,51.
MLA	Ye, JW,et al."Exciton correlations and input-output relations in non-equilibrium exciton superfluids".ANNALS OF PHYSICS 329(2013):51.