Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-performance Raman memory with spatio-temporal reversal   A number of techniques exist to use an ensemble of atoms as a quantum memory
for light. Many of these propose to use backward retrieval as a way to improve
the storage and recall efficiency. We report on a demonstration of an
off-resonant Raman memory that uses backward retrieval to achieve an efficiency
of $65\pm6\%$ at a storage time of one pulse duration. The memory has a
characteristic decay time of 60 $\mu$s, corresponding to a delay-bandwidth
product of $160$.

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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math