Photon echo without a free induction decay in a double-Λ system
Photon echo without a free induction decay in a double-Λ system
We have characterized a novel photon-echo pulse sequence for a double-Λ-type energy level system where the input and rephasing transitions are different from the applied π pulses. We show that, despite having imperfect π-pulses associated with large coherent emission due to free induction decay (FID), the noise added in the echo mode is only 0:2 0:1 photons per shot, compared to 4 × 104 photons in the FID modes. Using this echo pulse sequence in the “rephased amplified spontaneous emission” (RASE) scheme [Phys. Rev. A 81, 012301 (2010)] will allow for generation of entangled photon pairs that are in different frequency, temporal, and potentially spatial modes to any bright driving fields. The coherence and efficiency properties of this sequence were characterized in a Pr3þ:Y2SiO5 crystal.
1272-1274
Beavan, S.E.
3532c8f2-c1fa-4e53-8fd2-770203240071
Ledingham, P.M.
8db45fde-00d8-421a-93d6-7f18ac835c28
Longdell, J.J.
82bf4942-c14f-4e60-b331-9bc7470f947a
Sellars, M.J.
53da2834-1c5f-45d1-bca8-9287a2e341f6
1 April 2011
Beavan, S.E.
3532c8f2-c1fa-4e53-8fd2-770203240071
Ledingham, P.M.
8db45fde-00d8-421a-93d6-7f18ac835c28
Longdell, J.J.
82bf4942-c14f-4e60-b331-9bc7470f947a
Sellars, M.J.
53da2834-1c5f-45d1-bca8-9287a2e341f6
Beavan, S.E., Ledingham, P.M., Longdell, J.J. and Sellars, M.J.
(2011)
Photon echo without a free induction decay in a double-Λ system.
Optics Letters, 36 (7), .
(doi:10.1364/OL.36.001272).
Abstract
We have characterized a novel photon-echo pulse sequence for a double-Λ-type energy level system where the input and rephasing transitions are different from the applied π pulses. We show that, despite having imperfect π-pulses associated with large coherent emission due to free induction decay (FID), the noise added in the echo mode is only 0:2 0:1 photons per shot, compared to 4 × 104 photons in the FID modes. Using this echo pulse sequence in the “rephased amplified spontaneous emission” (RASE) scheme [Phys. Rev. A 81, 012301 (2010)] will allow for generation of entangled photon pairs that are in different frequency, temporal, and potentially spatial modes to any bright driving fields. The coherence and efficiency properties of this sequence were characterized in a Pr3þ:Y2SiO5 crystal.
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Published date: 1 April 2011
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Local EPrints ID: 452611
URI: http://eprints.soton.ac.uk/id/eprint/452611
ISSN: 0146-9592
PURE UUID: beab7853-c8bd-4ffa-a8fb-4df7a5ca7f91
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Date deposited: 11 Dec 2021 11:29
Last modified: 17 Mar 2024 04:03
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Author:
S.E. Beavan
Author:
J.J. Longdell
Author:
M.J. Sellars
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