2017/12/31 by Pierre-Élie Larré, P. -É. Larré, D. Delande +3 · 1 citation
Physics and Astronomy · #Coherence (philosophical gambling strategy) #Cold Atom Physics and Bose-Einstein Condensates #Free space #Light field #Non-equilibrium thermodynamics #Nonlinear Photonic Systems #Optics #Physics #Quantum #Quantum decoherence #Quantum mechanics #Strong Light-Matter Interactions #cond-mat.dis-nn #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.97.043805
published as Phys. Rev. A 97, 043805 (2018) · 18 pages, 5 figures
arxiv created 2018/03/22 · openalex publication_date 2018/04/05 · arxiv updated 2018/04/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We study the coherence of a disordered and interacting quantum light field after propagation along a nonlinear optical fiber. Disorder is generated by a cross-phase modulation with a randomized auxiliary classical light field, while interactions are induced by self-phase modulation. When penetrating the fiber from free space, the incoming quantum light undergoes a disorder and interaction quench. By calculating the coherence function of the transmitted quantum light, we show that the decoherence induced by the quench spreads in a light-cone fashion in the nonequilibrium many-body quantum system, leaving the latter prethermalize with peculiar features originating from disorder.