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https://hdl.handle.net/2440/104865
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Type: | Journal article |
Title: | Dual-rail optical gradient echo memory |
Author: | Higginbottom, D. Geng, J. Campbell, G. Hosseini, M. Cao, M. Sparkes, B. Bernu, J. Robins, N. Lam, P. Buchler, B. |
Citation: | Optics Express, 2015; 23(19):24937-24944 |
Publisher: | The Optical Society |
Issue Date: | 2015 |
ISSN: | 1094-4087 1094-4087 |
Statement of Responsibility: | D. B. Higginbottom, J. Geng, G. T. Campbell, M. Hosseini, M. T. Cao, B. M. Sparkes, J. Bernu, N. P. Robins, P. K. Lam and B. C. Buchler |
Abstract: | We introduce a scheme for the parallel storage of frequency separated signals in an optical memory and demonstrate that this dual-rail storage is a suitable memory for high fidelity frequency qubits. The two signals are stored simultaneously in the Zeeman-split Raman absorption lines of a cold atom ensemble using gradient echo memory techniques. Analysis of the split-Zeeman storage shows that the memory can be configured to preserve the relative amplitude and phase of the frequency separated signals. In an experimental demonstration dual-frequency pulses are recalled with 35% efficiency, 82% interference fringe visibility, and 6° phase stability. The fidelity of the frequency-qubit memory is limited by frequency-dependent polarisation rotation and ambient magnetic field fluctuations, our analysis describes how these can be addressed in an alternative configuration. |
Rights: | © 2015 Optical Society of America |
DOI: | 10.1364/OE.23.024937 |
Grant ID: | http://purl.org/au-research/grants/arc/CE1101027 |
Published version: | http://dx.doi.org/10.1364/oe.23.024937 |
Appears in Collections: | Aurora harvest 3 Physics publications |
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