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: 43802-1  to: 43802-17

More Information: We acknowledge D. G. Angelakis, D. Faccio, S. Finazzi, P. Grisins, C. Miniatura, and L. Vanzo for stimulating discussions. This work was supported by the ERC through the QGBE grant, by the EU-FET Proactive grant AQuS, Project No. 640800, and by the Autonomous Province of Trento, partly through the SiQuro project (On Silicon Chip Quantum Optics for Quantum Computing and Secure Communications).
KeyWords: Modulational Instability; Soliton Propagation; Photon; Flow; Filamentation; Radiation; Obstacle; Dynamics; Fibers; Time
DOI: 10.1103/PhysRevA.92.043802

Citations: 52
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