Phase Locking between Two All-Optical Quantum Memories
Quantum Physics
2021-01-04 v1
Abstract
Optical approaches to quantum computation require the creation of multi-mode photonic quantum states in a controlled fashion. Here we experimentally demonstrate phase locking of two all-optical quantum memories, based on a concatenated cavity system with phase reference beams, for the time-controlled release of two-mode entangled single-photon states. The release time for each mode can be independently determined. The generated states are characterized by two-mode optical homodyne tomography. Entanglement and nonclassicality are preserved for release-time differences up to 400 ns, confirmed by logarithmic negativities and Wigner-function negativities, respectively.
Cite
@article{arxiv.2009.06811,
title = {Phase Locking between Two All-Optical Quantum Memories},
author = {Fumiya Okamoto and Mamoru Endo and Mikihisa Matsuyama and Yuya Ishizuka and Yang Liu and Rei Sakakibara and Yosuke Hashimoto and Jun-ichi Yoshikawa and Peter van Loock and Akira Furusawa},
journal= {arXiv preprint arXiv:2009.06811},
year = {2021}
}
Comments
15 pages, 15 figures