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Storage of up-converted telecom photons in a doped crystal

Storage of up-converted telecom photons in a doped crystal
Storage of up-converted telecom photons in a doped crystal

We report on an experiment that demonstrates the frequency up-conversion of telecommunication wavelength single-photon-level pulses to be resonant with a Pr3+:Y2SiO5 crystal. We convert the telecom photons at 1570 nm to 606 nm using a periodically-poled potassium titanyl phosphate nonlinear waveguide. The maximum device efficiency (which includes all optical loss) is inferred to be ηmaxdev = 22 ± 1% (internal efficiency ηint = 75 ± 8%) with a signal to noise ratio exceeding 1 for single-photon-level pulses with durations of up to 560 ns. The converted light is then stored in the crystal using the atomic frequency comb scheme with storage and retrieval efficiencies exceeding ηAFC = 20% for predetermined storage times of up to 5 μs. The retrieved light is time delayed from the noisy conversion process allowing us to measure a signal to noise ratio exceeding 100 with telecom single-photon-level inputs. These results represent the first demonstration of single-photon-level optical storage interfaced with frequency up-conversion.

nonlinear waveguides, quantum information, quantum memory
1367-2630
Maring, Nicolas
58eb2464-f40e-4480-89e3-3ed7dcdee000
Kutluer, Kutlu
f1745733-d9d0-43c0-9046-075ae72bbad7
Cohen, Joachim
b58f24af-3c90-432a-b447-b43df71044de
Cristiani, Matteo
5597411b-0753-4454-b435-2354f9ffeaae
Mazzera, Margherita
1c51fc4d-cabb-4c3a-a593-c0e2400d3324
Ledingham, Patrick M.
8db45fde-00d8-421a-93d6-7f18ac835c28
De Riedmatten, Hugues
759bbde3-5fbe-4e2b-8cf5-553a58d128bd
Maring, Nicolas
58eb2464-f40e-4480-89e3-3ed7dcdee000
Kutluer, Kutlu
f1745733-d9d0-43c0-9046-075ae72bbad7
Cohen, Joachim
b58f24af-3c90-432a-b447-b43df71044de
Cristiani, Matteo
5597411b-0753-4454-b435-2354f9ffeaae
Mazzera, Margherita
1c51fc4d-cabb-4c3a-a593-c0e2400d3324
Ledingham, Patrick M.
8db45fde-00d8-421a-93d6-7f18ac835c28
De Riedmatten, Hugues
759bbde3-5fbe-4e2b-8cf5-553a58d128bd

Maring, Nicolas, Kutluer, Kutlu, Cohen, Joachim, Cristiani, Matteo, Mazzera, Margherita, Ledingham, Patrick M. and De Riedmatten, Hugues (2014) Storage of up-converted telecom photons in a doped crystal. New Journal of Physics, 16, [113021]. (doi:10.1088/1367-2630/16/11/113021).

Record type: Article

Abstract

We report on an experiment that demonstrates the frequency up-conversion of telecommunication wavelength single-photon-level pulses to be resonant with a Pr3+:Y2SiO5 crystal. We convert the telecom photons at 1570 nm to 606 nm using a periodically-poled potassium titanyl phosphate nonlinear waveguide. The maximum device efficiency (which includes all optical loss) is inferred to be ηmaxdev = 22 ± 1% (internal efficiency ηint = 75 ± 8%) with a signal to noise ratio exceeding 1 for single-photon-level pulses with durations of up to 560 ns. The converted light is then stored in the crystal using the atomic frequency comb scheme with storage and retrieval efficiencies exceeding ηAFC = 20% for predetermined storage times of up to 5 μs. The retrieved light is time delayed from the noisy conversion process allowing us to measure a signal to noise ratio exceeding 100 with telecom single-photon-level inputs. These results represent the first demonstration of single-photon-level optical storage interfaced with frequency up-conversion.

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Published date: 11 November 2014
Additional Information: Publisher Copyright: © The Author(s) 2014. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
Keywords: nonlinear waveguides, quantum information, quantum memory

Identifiers

Local EPrints ID: 455272
URI: http://eprints.soton.ac.uk/id/eprint/455272
ISSN: 1367-2630
PURE UUID: fce42a44-60c2-4b33-b7ad-019b0f4b194c
ORCID for Patrick M. Ledingham: ORCID iD orcid.org/0000-0002-9804-6132

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Date deposited: 16 Mar 2022 17:45
Last modified: 17 Mar 2024 04:03

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Contributors

Author: Nicolas Maring
Author: Kutlu Kutluer
Author: Joachim Cohen
Author: Matteo Cristiani
Author: Margherita Mazzera
Author: Hugues De Riedmatten

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