Frustrated quantum phase diffusion and increased coherence of solitons due to 
nonlocality

Batz, Sascha; Peschel, Ulf

doi:10.1103/PhysRevA.83.033826

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Frustrated quantum phase diffusion and increased coherence of solitons due to nonlocality

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Batz, Sascha
Nonlinear Optics and Nanophotonics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Peschel, Ulf
Nonlinear Optics and Nanophotonics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Batz, S., & Peschel, U. (2011). Frustrated quantum phase diffusion and increased coherence of solitons due to nonlocality. PHYSICAL REVIEW A, 83(3): 033826. doi:10.1103/PhysRevA.83.033826.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A0B-E

Abstract

We investigate the quantum properties of solitons with nonlocal self-interaction. We find significant changes when compared to the local interaction. Quantum phase diffusion of nonlocal solitons is always reduced with respect to the local interaction and vanishes in the strongly nonlocal limit. Thus, coherence is increased in the nonlocal case. Furthermore, we compare the intrinsic quantum wave packet spreading to the recently discussed classical Gordon-Haus effect for nonlocal solitons [V. Folli and C. Conti, Phys. Rev. Lett. 104, 193901 (2010)].