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Photon echo without a free induction decay in a double-Λ system

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.
0146-9592
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
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), 1272-1274. (doi:10.1364/OL.36.001272).

Record type: Article

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

Identifiers

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: 08 Jan 2022 01:59

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Contributors

Author: S.E. Beavan
Author: P.M. Ledingham
Author: J.J. Longdell
Author: M.J. Sellars

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