Spontaneous coherence of indirect excitons in a trap
Alexander A. High, Jason R. Leonard, Mikas Remeika, Leonid V. Butov,, Micah Hanson, and Arthur C. Gossard
TL;DR
This paper reports the observation of spontaneous coherence in a gas of indirect excitons confined in an electrostatic trap, with coherence length surpassing thermal limits at low temperatures.
Contribution
It demonstrates the emergence of spontaneous coherence in indirect excitons within a trap, highlighting a significant quantum phenomenon in solid-state systems.
Findings
Coherence length exceeds thermal de Broglie wavelength at low temperatures
Coherence size matches the exciton cloud in the trap
Spontaneous coherence observed in indirect excitons
Abstract
We report on the emergence of spontaneous coherence in a gas of indirect excitons in an electrostatic trap. At low temperatures, the exciton coherence length becomes much larger than the thermal de Broglie wavelength and reaches the size of the exciton cloud in the trap.
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Spectroscopy and Quantum Chemical Studies · Quantum optics and atomic interactions