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Quantum coherence in momentum space of light-matter condensates

机译：轻质凝聚态动量空间中的量子相干

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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.
机译：我们表明，动量空间光学干涉术的使用避免了宏观量子态的两个部分之间的任何空间重叠，提供了一种研究极化子凝聚物中相干现象的独特方法。通过这种方式，我们解决了量子力学中一个长期存在的问题：“冷凝物的两个从未相互见过的组分是否具有确定的相？” [P. W. Anderson，“凝聚态物理的基本概念”（本杰明·卡明斯，门洛帕克，加利福尼亚，1984年）]。对于在半导体微腔中在精确对称条件下产生的光凝结物，利用发射角与极化子的面内动量之间的直接关系，可以通过实验获得一个肯定的答案。

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  • 来源
    《Physical review》 |2014年第8期|081407.1-081407.5|共5页
  • 作者

    C. Anton; G. Tosi; M. D. Martin; Z. Hatzopoulos; G.Konstantinidis; P. S. Eldridge; P. G. Savvidis; C. Tejedor; L. Vina;

  • 作者单位

    Departamento de Fisica de Materiales, Universidad Autonoma de Madrid, Madrid 28049, Spain,Institute de Ciencia de Materiales 'Nicolas Cabrera,' Universidad Autonoma de Madrid, Madrid 28049, Spain;

    Departamento de Fisica de Materiales, Universidad Autonoma de Madrid, Madrid 28049, Spain;

    Departamento de Fisica de Materiales, Universidad Autonoma de Madrid, Madrid 28049, Spain,Institute de Ciencia de Materiales 'Nicolas Cabrera,' Universidad Autonoma de Madrid, Madrid 28049, Spain;

    FORTH-IESL, P.O. Box 1385, 71110 Heraklion, Crete, Greece,Department of Physics, University of Crete, 71003 Heraklion, Crete, Greece;

    FORTH-IESL, P.O. Box 1385, 71110 Heraklion, Crete, Greece;

    FORTH-IESL, P.O. Box 1385, 71110 Heraklion, Crete, Greece;

    FORTH-IESL, P.O. Box 1385, 71110 Heraklion, Crete, Greece,Department of Materials Science and Technology, University of Crete, 71003 Heraklion, Crete, Greece;

    Departamento de Fisica Teorica de la Materia Condensada, Universidad Autonoma de Madrid, Madrid 28049, Spain,Institute de Ciencia de Materiales 'Nicolas Cabrera,' Universidad Autonoma de Madrid, Madrid 28049, Spain,Instituto de Fisica de la Materia Condensada, Universidad Autonoma de Madrid, Madrid 28049, Spain;

    Departamento de Fisica de Materiales, Universidad Autonoma de Madrid, Madrid 28049, Spain,Institute de Ciencia de Materiales 'Nicolas Cabrera,' Universidad Autonoma de Madrid, Madrid 28049, Spain,Instituto de Fisica de la Materia Condensada, Universidad Autonoma de Madrid, Madrid 28049, Spain;

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  • 正文语种 eng
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  • 关键词

    quantum wells; polaritons (including photon-phonon and photon-magnon interactions);

    机译：量子阱极化子（包括光子-声子和光子-磁子相互作用）;

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