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Cross-phase modulation and entanglement in a compound gradient echo memory

Fu, Shuangshuang; Carvalho, Andre; Hush, Michael R; James, Matthew


We present a theoretical model for a Kerr-like interaction between two registers of a compound gradient echo memory (GEM). This type of interaction is known to generate cross-phase modulation (XPM) between optical fields, an effect that is limited by the typically small values of nonlinearities in crystals. Here we show that in GEM systems the phase shift increases linearly with the interaction time and quadratically with the strength of the field. Increasing storage (interaction) times would...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.93.023809
Access Rights: Open Access


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