Optical Signature of Quantum Coherence in Fully Dark Exciton Condensates - Archive ouverte HAL
Article Dans Une Revue Physical Review Letters Année : 2019

Optical Signature of Quantum Coherence in Fully Dark Exciton Condensates

Résumé

We predict the existence of high frequency modes in the interference pattern of two condensates made of fermionic-atom dimers. These modes, which result from fermion exchanges between condensates, constitute a striking signature of the dimer composite nature. From the 2-coboson spatial correlation function, that we derive analytically, and the Shiva diagrams that visualize many-body effects specific to composite bosons, we identify the physical origin of these high frequency modes and determine the conditions to see them experimentally by using bound fermionic-atom pairs trapped on optical lattice sites. The dimer granularity which appears in these modes comes from Pauli blocking that prevents two dimers to be located at the same lattice site.

Dates et versions

hal-02356610 , version 1 (08-11-2019)

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Aurélia Chenu, Shiue-Yuan Shiau, Monique Combescot. Optical Signature of Quantum Coherence in Fully Dark Exciton Condensates. Physical Review Letters, 2019, 123 (9), ⟨10.1103/PhysRevLett.123.097401⟩. ⟨hal-02356610⟩
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