Multiparticle correlations in complex scattering and the mesoscopic Boson Sampling problem

Multiparticle correlations in complex scattering and the mesoscopic Boson Sampling problem
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复散射中的多粒子相关性和介观玻色子采样问题

DOI：
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发表时间：
2014
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通讯作者：
K. Richter
K. Richter
中科院分区：
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文献类型：
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作者：
J. Urbina;J. Kuipers;Q. Hummel;K. Richter

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本文研究了介观混沌腔中非相互作用全同粒子的多体散射。一个完整的枚举的所有干涉路径，使我们能够区分单粒子效应从多体干涉由于量子不可逆性。在大粒子数的热力学极限下，大量的量子干涉导致了多体关联的宏观的、相干的表现。我们还将介观失相，目前，即使当粒子同时散射。根据光学场景的进一步简化特性，我们的方法可以用来解决与玻色子采样问题相关的公开问题。
We consider the many-body scattering of non-interacting identical particles in mesoscopic chaotic cavities. A complete enumeration of all interfering paths allows us to discriminate single-particle effects from many-body interference due to quantum indistinguishability. In the thermodynamic limit of large particle number massive quantum interference results in a macroscopic, coherent manifestation of many-body correlations. We also incorporate mesoscopic dephasing, present even when the particles scatter simultaneously. Under further simplifications characteristic for optical scenarios, our methods can be used to address open issues related to the Boson Sampling problem.