Quantum coherence in momentum space of light-matter condensates

被引：8

作者：

Anton, C. ^{[1
,2
]}

Tosi, G. ^{[1
]}

Martin, M. D. ^{[1
,2
]}

Hatzopoulos, Z. ^{[3
,4
]}

Konstantinidis, G. ^{[3
]}

Eldridge, P. S. ^{[3
]}

Savvidis, P. G. ^{[3
,5
]}

Tejedor, C. ^{[2
,6
,7
]}

Vina, L. ^{[1
,2
,7
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Mat, E-28049 Madrid, Spain

[2] Univ Autonoma Madrid, Inst Ciencia Mat Nicolas Cabrera, E-28049 Madrid, Spain

[3] FORTH IESL, Iraklion 71110, Greece

[4] Univ Crete, Dept Phys, Iraklion 71003, Greece

[5] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Greece

[6] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

[7] Univ Autonoma Madrid, Inst Fis Mat Condensada, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 08期

关键词：

BOSE-EINSTEIN CONDENSATION; RELATIVE PHASE; POLARITONS; INTERFERENCE;

D O I：

10.1103/PhysRevB.90.081407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that the use of momentum-space optical interferometry, which avoids any spatial overlap between two parts of a macroscopic quantum state, presents a unique way to study coherence phenomena in polariton condensates. In this way, we address the longstanding question in quantum mechanics: "Do two components of a condensate, which have never seen each other, possess a definitive phase?" [P. W. Anderson, Basic Notions of Condensed Matter Physics (Benjamin Cummings, Menlo Park, CA, 1984)]. A positive answer to this question is experimentally obtained here for light-matter condensates, created under precise symmetry conditions, in semiconductor microcavities, taking advantage of the direct relation between the angle of emission and the in-plane momentum of polaritons.

引用

页数：5

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