Observation of cross phase modulation in cold atom gradient echo memory
Quantum Physics
2022-09-28 v1
Abstract
Strong nonlinear interactions between single photons have important applications in optical quantum information processing. Demonstrations of these interactions in cold atomic ensembles have largely been limited to exploiting slow light generated using electromagnetically induced transparency (EIT). However, these EIT implementations have limited achievable phase shifts due to spontaneous emission. Here, we demonstrate and characterize a scheme free from these limitations using gradient echo memory with inferred single photon phase shifts of . Excellent agreement with theoretical modelling was observed. Degradation of memory efficiency was observed for large phase shifts but strategies to overcome that are presented.
Cite
@article{arxiv.2205.10007,
title = {Observation of cross phase modulation in cold atom gradient echo memory},
author = {Anthony C. Leung and K. S. Ida Melody and Aaron D. Tranter and Karun V. Paul and Geoff T. Campbell and Ping Koy Lam and Ben C. Buchler},
journal= {arXiv preprint arXiv:2205.10007},
year = {2022}
}
Comments
7 pages, 6 figures