Nonclassical photon streams using rephased amplified spontaneous emission
Nonclassical photon streams using rephased amplified spontaneous emission
We present a fully quantum mechanical treatment of optically rephased photon echoes. These echoes exhibit noise due to amplified spontaneous emission; however, this noise can be seen as a consequence of the entanglement between the atoms and the output light. With a rephasing pulse one can get an "echo" of the amplified spontaneous emission, leading to light with nonclassical correlations at points separated in time, which is of interest in the context of building wide bandwith quantum repeaters. We also suggest a wideband version of DLCZ protocol based on the same ideas.
Ledingham, Patrick M.
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Naylor, William R.
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Longdell, Jevon J.
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Beavan, Sarah E.
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Sellars, Matthew J.
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4 January 2010
Ledingham, Patrick M.
8db45fde-00d8-421a-93d6-7f18ac835c28
Naylor, William R.
bf41ab28-7db2-4f58-8e14-1c73b63753f3
Longdell, Jevon J.
82bf4942-c14f-4e60-b331-9bc7470f947a
Beavan, Sarah E.
3532c8f2-c1fa-4e53-8fd2-770203240071
Sellars, Matthew J.
53da2834-1c5f-45d1-bca8-9287a2e341f6
Ledingham, Patrick M., Naylor, William R., Longdell, Jevon J., Beavan, Sarah E. and Sellars, Matthew J.
(2010)
Nonclassical photon streams using rephased amplified spontaneous emission.
Physical Review A - Atomic, Molecular, and Optical Physics, 81 (1), [012301].
(doi:10.1103/PhysRevA.81.012301).
Abstract
We present a fully quantum mechanical treatment of optically rephased photon echoes. These echoes exhibit noise due to amplified spontaneous emission; however, this noise can be seen as a consequence of the entanglement between the atoms and the output light. With a rephasing pulse one can get an "echo" of the amplified spontaneous emission, leading to light with nonclassical correlations at points separated in time, which is of interest in the context of building wide bandwith quantum repeaters. We also suggest a wideband version of DLCZ protocol based on the same ideas.
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Published date: 4 January 2010
Identifiers
Local EPrints ID: 455324
URI: http://eprints.soton.ac.uk/id/eprint/455324
ISSN: 1050-2947
PURE UUID: d7e2ad72-1461-4ab7-9323-59522d34891f
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Date deposited: 17 Mar 2022 17:30
Last modified: 17 Mar 2024 04:03
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Contributors
Author:
William R. Naylor
Author:
Jevon J. Longdell
Author:
Sarah E. Beavan
Author:
Matthew J. Sellars
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