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Demonstration of Atomic Frequency Comb Memory for Light with Spin-Wave Storage

Autor: Stefan Kröll, Imam Usmani, Hugues de Riedmatten, Nicolas Sangouard, Jiri Minar, Christoph Simon, Mikael Afzelius, Nicolas Gisin, Atia Amari, Andreas Walther, Bjoern Lauritzen

Publikováno v: Physical Review Letters, Vol. 104, No 4 (2010) pp. 040503-1/4

We present a light-storage experiment in a praseodymium-doped crystal where the light is mapped onto an inhomogeneously broadened optical transition shaped into an atomic frequency comb. After absorption of the light the optical excitation is convert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::896696bca2c8ef7034026459ff46f6f5
https://archive-ouverte.unige.ch/unige:11766

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Storage and recall of weak coherent optical pulses with an efficiency of 25%

Autor: Mahmood Sabooni, N. Lin, Félix Beaudoin, Andreas Walther, Stefan Kröll, Atia Amari, Maomao Huang

Publikováno v: Physical Review Letters

We demonstrate experimentally a quantum memory scheme for the storage of weak coherent light pulses in an inhomogeneously broadened optical transition in a Pr^{3+}: YSO crystal at 2.1 K. Precise optical pumping using a frequency stable (about 1kHz li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d4a5a5dea5da3ee3844746c9891f14c
https://pubmed.ncbi.nlm.nih.gov/20867963

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Towards an eficient atomic frequency comb quantum memory

Autor: Nicolas Sangouard, Nicolas Gisin, Imam Usmani, Atia Amari, H. de Riedmatten, Maomao Huang, Stefan Kröll, Mikael Afzelius, Andreas Walther, Björn Lauritzen, Mahmood Sabooni

Publikováno v: Journal of Luminescence, Vol. 130 (2010) pp. 1579-1585
Journal of Luminescence

We present an efficient photon-echo experiment based on atomic frequency combs [Phys. Rev. A 79, 052329 (2009)]. Echoes containing an energy of up to 35% of that of the input pulse are observed in a Pr3+-doped Y2SiO5 crystal. This material allows for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de92bcce70b475ff6d9afc524dfefa0e
http://arxiv.org/abs/0911.2145

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Experimental superradiance and slow-light effects for quantum memories

Autor: Atia Amari, Alexey Kalachev, Stefan Kröll, Andreas Walther

Publikováno v: Physical Review A. 80

The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including controlled reversible inhomogeneous broadening, atomic frequency

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fbc7519d31601ee05d1e4274bc02d600
https://doi.org/10.1103/physreva.80.012317

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Hyperfine structure and hyperfine coherent properties of praseodymium in single-crystallineLa2(WO4)3by hole-burning and photon-echo techniques

Autor: F. Beaudoux, O. Guillot-Noël, Lars Rippe, Y. Le Du, Andreas Walther, J. Lejay, Ph. Goldner, Stefan Kröll, Atia Amari

Publikováno v: Physical Review B. 79

We studied the hyperfine structure and hyperfine coherent properties of the H-3(4)(0)-> D-1(2)(0) transition of Pr3+ ions in a tungstate single crystal La-2(WO4)(3) by hole-burning and photon-echo techniques. This work is motivated by the search of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40069679817bfb82bcf8c52dd3bb1f4a
https://doi.org/10.1103/physrevb.79.155119

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Long coherence lifetime and electromagnetically induced transparency in a highly-spin-concentrated solid

Autor: Lars Rippe, J.-L. Le Gouët, Ph. Goldner, O. Guillot-Noël, Atia Amari, J. Lejay, Andreas Walther, Thierry Chanelière, Y. Le Du, F. Beaudoux, Stefan Kröll

Publikováno v: Physical Review A : Atomic, molecular, and optical physics [1990-2015]
Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2009, 79 (3), ⟨10.1103/PhysRevA.79.033809⟩
Physical Review A
Physical Review A, American Physical Society, 2009, 79 (3), ⟨10.1103/PhysRevA.79.033809⟩

We have studied a rare-earth-doped crystal, Pr3+:La-2(WO4)(3), which exhibits a high magnetic-moment density. Although the latter favors rare-earth dephasing, a nuclear-spin coherence lifetime of 250 mu s has been observed, as well as electromagnetic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::639c959f111ba3ba0ed05152b3f1e0e5
https://hal.science/hal-03006357

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Spectral hole-burning spectroscopy inNd3+:YVO4

Autor: Stefan Kröll, S. R. Hastings-Simon, Atia Amari, M. U. Staudt, Mikael Afzelius, Jiří Minář, Björn Lauritzen, Marco Bettinelli, Andreas Walther, Enrico Cavalli, Nicolas Gisin, H. de Riedmatten

Publikováno v: Physical Review B. 77

We present spectral hole-burning measurements on the 879 nm, I-4(9/2) -> F-4(3/2) transition in Nd3+ : YVO4. We observe antiholes in the spectrum along with long lived spectral holes, which demonstrates optical pumping between the ground state Zeeman

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f9832aac46eb6ddef4e9f6f7f25b5a84
https://doi.org/10.1103/physrevb.77.125111

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Solid state quantum memories for quantum repeaters

Autor: Imam Usmani, H. de Riedmatten, Nicolas Sangouard, Atia Amari, Christoph Simon, Stefan Kröll, Christoph Clausen, Mikael Afzelius, Björn Lauritzen, Jiri Minar, Nicolas Gisin, Andreas Walther

Publikováno v: Scopus-Elsevier

Quantum memories are necessary for the implementation of quantum networks and repeaters. Recent progress towards photonic quantum storage in solid state atomic ensembles using photon echo techniques will be presented.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddf0255542a340ed5aa79ba3f08db8e4
http://www.scopus.com/inward/record.url?eid=2-s2.0-77957584728&partnerID=MN8TOARS

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Rare earth doped crystals for quantum information devices

Autor: J.-L. Le Gouët, F. Beaudoux, O. Guillot-Noël, J. Lejay, Stefan Kröll, Lars Rippe, Atia Amari, Ph. Goldner, Andreas Walther, Thierry Chanelière

Publikováno v: Scopus-Elsevier

Recently, rare earth doped materials have been considered as promising systems in quantum information processing and communication. The most important property used in this field is the ability for a quantum system to be in a superposition state. Suc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4727e8d95c845cab10df8c16850880d
http://www.scopus.com/inward/record.url?eid=2-s2.0-84897962422&partnerID=MN8TOARS

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