Phase Locked Photon Echoes for Extended Storage Time

TL;DR

This paper introduces a phase locking photon echo protocol that significantly extends quantum optical storage time by using an auxiliary spin state to control rephasing, achieving high retrieval efficiency and aberration correction.

Contribution

The novel phase locking method utilizing an auxiliary spin state extends quantum storage time and improves retrieval efficiency in photon echo protocols.

Findings

Extended storage time via phase locking with auxiliary spin state

Near perfect retrieval efficiency achieved

Aberration correction in quantum image retrieval

Abstract

We report a quantum optical storage time-extended near perfect photon echo protocol using a phase locking method via an auxiliary spin state, where the phase locking acts as a conditional stopper of the rephasing process resulting in extension of storage time determined by the spin dephasing process. The near perfect retrieval efficiency is owing to phase conjugate scheme, which gives the important benefit of aberration corrections when dealing with quantum images.