2012/10/11 by M. Alloing, Mathieu Alloing, D. Fuster +11
Physics and Astronomy · #Biexciton #Coherence (philosophical gambling strategy) #Coherence length #Condensed matter physics #Dipole #Exciton #FOS: Physical sciences #Materials science #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular physics #Physics #Quantum #Quantum mechanics #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices #Spatial coherence #Spectroscopy and Quantum Chemical Studies #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1210.3176
5 pages, 4 figures
arxiv created 2012/10/11 · openalex publication_date 2012/10/11 · arxiv updated 2012/10/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report experiments showing that spatially indirect excitons confined in a wide single quantum well can exhibit macroscopic spatial coherence. Extended coherence is spontaneously established in the regime where indirect excitons form a distinctive ring shaped pattern fragmented into microscopic beads. These contain a large concentration of indirect excitons at sub-Kelvin temperatures, the excitons spatial coherence being the greatest in the vicinity of the fragments.