Photon echoes generated by reversing magnetic field gradients in a rubidium vapour
Date
2008-10-15
Authors
Hétet, G
Hosseini, M
Sparkes, B. M
Oblak, D
Lam, P. K
Buchler, Benjamin
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
We propose a photon echo quantum memory scheme using detuned Raman coupling
to long lived ground states. In contrast to previous 3-level schemes based on
controlled reversible inhomogeneous broadening that use sequences of
π-pulses, the scheme does not require accurate control of the coupling
dynamics to the ground states. We present a proof of principle experimental
realization of our proposal using rubidium atoms in a warm vapour cell. The
Raman resonance line is broadened using a magnetic field that varies linearly
along the direction of light propagation. Inverting the magnetic field gradient
rephases the atomic dipoles and re-emits the light pulse in the forward
direction.
Description
Keywords
photon, echo, quantum, memory, scheme, Raman, coupling, 3-level, controlled, reversible, inhomogeneous
Citation
Collections
Source
Optics Letters
Type
Journal article
Book Title
Entity type
Access Statement
Open Access