Ultralong temporal coherence in optically trapped exciton-polariton condensates

被引：18
|
作者：
Orfanakis, K. [1 ]
Tzortzakakis, A. F. [2 ]
Petrosyan, D. [2 ,3 ]
Savvidis, P. G. [2 ,4 ,5 ,6 ]
Ohadi, H. [1 ]
机构：
[1] Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[2] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, GR-70013 Iraklion, Crete, Greece
[3] A Alikhanian Natl Sci Lab, Yerevan 0036, Armenia
[4] ITMO Univ, St Petersburg 197101, Russia
[5] Westlake Univ, 18 Shilongshan Rd, Hangzhou 310024, Zhejiang, Peoples R China
[6] Westlake Inst Adv Study, 18 Shilongshan Rd, Hangzhou 310024, Zhejiang, Peoples R China
来源：
PHYSICAL REVIEW B | 2021年 / 103卷 / 23期
基金：
英国工程与自然科学研究理事会; 俄罗斯科学基金会;
关键词：
BOSE-EINSTEIN CONDENSATION; LIFETIMES;
D O I：
10.1103/PhysRevB.103.235313
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate an optically trapped exciton-polariton condensate and observe temporal coherence beyond 1 ns in duration. Due to the reduction of the spatial overlap with the thermal reservoir of excitons, the coherence time of the trapped condensate is more than an order of magnitude longer than that of an untrapped condensate. This ultralong coherence enables high-precision spectroscopy of the trapped condensate, and we observe periodic beats of the field correlation function due to a fine energy splitting of two polarization modes of the condensate. Our results are important for realizing polariton simulators with spinor condensates in lattice potentials.
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收藏
页数：7
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