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Journal articles
Photonic controlled-phase gates through Rydberg blockade in optical cavities
Sumanta Das
1
Andrey Grankin
2
Ivan Iakoupov
1
Etienne Brion
3
Johannes Borregaard
1, 4
Rajiv Boddeda
2
Imam Usmani
2
Alexei Ourjoumtsev
5
Philippe Grangier
2
Anders Sorensen
1
Sumanta Das 1
Author
Andrey Grankin 2
Author
Ivan Iakoupov 1
Author
Etienne Brion 3
Mail :
Author IdHAL : etienne-brion arXiv : https://arxiv.org/a/ebrion ORCID : https://orcid.org/0000-0002-7051-1485
Johannes Borregaard 1, 4
Author
Rajiv Boddeda 2
Mail :
Author IdHAL : rajiv-boddeda ORCID : https://orcid.org/0000-0002-4521-0023
Imam Usmani 2
Mail :
Author
Alexei Ourjoumtsev 5
Mail :
Author
Philippe Grangier 2
Mail :
Author
Anders S. Sorensen 1
Mail :
Author
1
NBI - Niels Bohr Institute [Copenhagen] (Blegdamsvej 17, DK-2100 Copenhagen - Denmark)
- Faculty of Science [Copenhagen] (Bülowsvej 17
1870 Frederiksberg C
Copenhagen
- Denmark)
- KU - University of Copenhagen = Københavns Universitet (Nørregade 10, 1165 København, Danemark - Denmark)
2
Laboratoire Charles Fabry / Optique Quantique (France)
- LCF - Laboratoire Charles Fabry (2 avenue Augustin Fresnel, 91127 Palaiseau Cedex - France)
- IOGS - Institut d'Optique Graduate School (2 avenue Augustin Fresnel, 91127 Palaiseau Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8501 (France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
3
LAC - Laboratoire Aimé Cotton (France)
- ENS Cachan - École normale supérieure - Cachan (61, avenue du Président Wilson - 94230 Cachan - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UPR3321 (France)
4
Department of Physics [MIT Cambridge] (77 Massachusetts Avenue Cambridge, MA 02139-4307 - United States)
- MIT - Massachusetts Institute of Technology (77 Massachusetts Ave, Cambridge, MA 02139 - United States)
5
CdF - Collège de France (France)
Abstract : We propose a novel scheme for high fidelity photonic controlled phase gates using Rydberg blockade in an ensemble of atoms in an optical cavity. The gate operation is obtained by first storing a photonic pulse in the ensemble and then scattering a second pulse from the cavity, resulting in a phase change depending on whether the first pulse contained a single photon. We show that the combination of Rydberg blockade and optical cavities effectively enhances the optical non-linearity created by the strong Rydberg interaction and thereby reduces the requirements for photonic quantum gates. The resulting gate can be implemented with cavities of moderate finesse which allows for highly efficient processing of quantum information encoded in photons. As a particular example of this, we show how the gate can be employed to increase the communication rate of quantum repeaters based on atomic ensembles.
Document type :
Journal articles
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Complete list of metadatas
https://hal-iogs.archives-ouvertes.fr/hal-01712792
Contributor : Marie-Laure Edwards <>
Submitted on : Monday, February 19, 2018 - 5:52:31 PM
Last modification on : Tuesday, July 21, 2020 - 3:13:03 AM
Contributor : Marie-Laure Edwards <>
Submitted on : Monday, February 19, 2018 - 5:52:31 PM
Last modification on : Tuesday, July 21, 2020 - 3:13:03 AM
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Identifiers
- HAL Id : hal-01712792, version 1
- ARXIV : 1506.04300
- DOI : 10.1103/PhysRevA.93.040303
Collections
IOGS | CNRS | ENS-CACHAN | LCF_OQ | CDF | LCFIO | PARISTECH | UNIV-PARIS-SACLAY
Citation
Sumanta Das, Andrey Grankin, Ivan Iakoupov, Etienne Brion, Johannes Borregaard, et al.. Photonic controlled-phase gates through Rydberg blockade in optical cavities. Physical Review A, American Physical Society, 2016, 93 (4), pp.040303. ⟨10.1103/PhysRevA.93.040303⟩. ⟨hal-01712792⟩
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