title: Restrictions on the coherence of the ultrafast optical emission from an electron-hole-pair condensate.
abstract: We report on the transfer of coherence from a quantum-well electron-hole condensate to the light it emits. As a function of density, the coherence of the electron-hole-pair system evolves from being full for the low-density Bose-Einstein condensate to a chaotic behavior for a high-density BCS-like state. This degree of coherence is transferred to the light emitted in a damped oscillatory way in the ultrafast regime. Additionally, the photon field exhibits squeezing properties during the transfer time. Our results suggest a new type of ultrafast experiments for detecting electron-hole-pair condensation.
authors.affiliation: Departamento de Física, Universidad de Los Andes, A.A. 4976, Bogotá D.C., Colombia.
authors.forename: A
authors.initials: A
authors.lastname: Olaya-Castro
authors.forename: F J
authors.initials: FJ
authors.lastname: Rodríguez
authors.forename: L
authors.initials: L
authors.lastname: Quiroga
authors.forename: C
authors.initials: C
authors.lastname: Tejedor