Emergence of spatially extended pair coherence through incoherent local environmental coupling

Emergence of spatially extended pair coherence through incoherent local environmental coupling
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通过不相干的局部环境耦合出现空间扩展对相干性

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
C. Kollath
C. Kollath
中科院分区:
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文献类型:
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作者:
Jean;P. Barmettler;D. Poletti;C. Kollath

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我们证明量子相干性可以通过耦合到非相干环境和动力学过程的相互作用来产生。这种联合效应甚至发生在最初以非相干莫特绝缘态制备的排斥相互作用的费米子系统中。在这种情况下,将耗散噪声场与局部自旋密度耦合会产生相干的费米子对。生成的对相干性会延伸很长的距离,如玻色-爱因斯坦凝聚中常见的那样。这种概念上令人惊讶的方法为更好地控制量子多体相关性提供了一条新颖的途径。
We demonstrate that quantum coherence can be generated by the interplay of coupling to an incoherent environment and kinetic processes. This joint effect even occurs in a repulsively interacting fermionic system initially prepared in an incoherent Mott insulating state. In this case, coupling a dissipative noise field to the local spin density produces coherent pairs of fermions. The generated pair coherence extends over long distances as typically seen in Bose-Einstein condensates. This conceptually surprising approach provides a novel path towards a better control of quantum many-body correlations.
DOI: 10.1038/nmat3294
发表时间: 2012-06-01
期刊: NATURE MATERIALS
影响因子: 41.2
作者:
Kim, K. W.;Pashkin, A.;Leitenstorfer, A.
通讯作者: Leitenstorfer, A.
DOI: 10.1103/revmodphys.83.471
发表时间: 2011-06-02
影响因子: 44.1
作者:
Basov, D. N.;Averitt, Richard D.;Haule, Kristjan
通讯作者: Haule, Kristjan