Propagation of a quantum fluid of light in a cavityless nonlinear optical medium: General theory and response to quantum quenches

Year: 2015

Authors: Larre PE., Carusotto I.

Autors Affiliation: ‎Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy;‎ Univ Trento, Dipartimento Fis, I-38123 Povo, Italy

Abstract: Making use of a generalized quantum theory of paraxial light propagation where the radiation-axis and the temporal coordinates play exchanged roles, we discuss the potential of bulk nonlinear optical media in cavityless configurations for quantum statistical mechanics studies of the conservative many-body dynamics of a gas of interacting photons. To illustrate the general features of this point of view, we investigate the response of the fluid of light to the quantum quenches in the photon-photon interaction constant experienced at the front and the back faces of a finite slab of weakly nonlinear material. Extending the standard Bogoliubov theory of dilute Bose-Einstein condensates, peculiar features are predicted for the statistical properties of the light emerging from the nonlinear medium.

Journal/Review: PHYSICAL REVIEW A

Volume: 92 (4)      Pages from: 043802-1  to: 043802-17

KeyWords: MODULATIONAL INSTABILITY; SOLITON PROPAGATION; PHOTON; FLOW; FILAMENTATION; RADIATION; OBSTACLE; DYNAMICS; FIBERS; TIME
DOI: 10.1103/PhysRevA.92.043802

Citations: 42
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