Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Storage and retrieval of a light in telecomband in a cold atomic
  ensemble   A telecom photon is a suitable information carrier in a fiber-based quantum
network due to its lower transmission loss in fiber. Because of the paucity of
suitable atomic system, usually the photon connecting different memories is in
near infrared band, therefore the frequency conversion of the photon in and out
of telecomband has to be required to realize the interface between the
atomic-based memory and the photon-based carrier. In order for that, two atomic
or other systems which could realize the frequency conversion have to be taken
into account, and besides, one more atomic system as a storing media is need.
So the ability of storing a photon in telecomband is an interesting and
exciting topic. In this work, we give a first experimental proof of principle
of storing a light in telecomband. The telecom light is directly stored and
retrieved later through two nonlinear processes via an inverted-Y configuration
in a cold atomic ensemble, therefore the interface between the memory and
photon in other proposals is not needed. We believe our work may open a new
avenue for long-distance quantum communication.

33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th