Presentation 2013-05-17
Transfer and retrieval of telecom-wavelength picosecond single-photon qubits to quantum dots
Kazumasa SUZUKI, Koichiro KONISHI, Kouichi AKAHANE, Junko ISHI-HAYASE,
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Abstract(in English) We demonstrate the coherent transfer and retrieval of picosecound single-photon time-bin qubits to a quantum dot ensemble at a telecommunication wavelength using a photon-echo technique. The visibility of interfered photon-echo signals which determines the transfer/retrieval fidelity of time-bin qubits was estimated to be approximately 98 % for a 200-ps storage time. Moreover, we found that the retrieval fidelity is independent of storage time for at least 1 ns. Our result shows that a quantum dot ensemble which has large inhomogeneous broadening of optical transition of excitons in conjunction with a photon-echo technique is promising candidate for realizing the ultrabroadband (terahertz range) light-matter quantum interface which is operable in the telecommunication wavelength range.
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Keyword(in English) Quantum Dot / Photon Echo / Quantum Interface / Quantum Information Technology
Paper # LQE2013-10
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Committee LQE
Conference Date 2013/5/10(1days)
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Registration To Lasers and Quantum Electronics (LQE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Transfer and retrieval of telecom-wavelength picosecond single-photon qubits to quantum dots
Sub Title (in English)
Keyword(1) Quantum Dot
Keyword(2) Photon Echo
Keyword(3) Quantum Interface
Keyword(4) Quantum Information Technology
1st Author's Name Kazumasa SUZUKI
1st Author's Affiliation School of Fundamental Science and Technology, Keio University()
2nd Author's Name Koichiro KONISHI
2nd Author's Affiliation School of Fundamental Science and Technology, Keio University
3rd Author's Name Kouichi AKAHANE
3rd Author's Affiliation National Institute of Information and Communications Technology
4th Author's Name Junko ISHI-HAYASE
4th Author's Affiliation National Institute of Information and Communications Technology
Date 2013-05-17
Paper # LQE2013-10
Volume (vol) vol.113
Number (no) 49
Page pp.pp.-
#Pages 4
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