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Title: Time-bin entangled qubits for quantum communication created by femtosecond pulses

Abstract

We create pairs of nondegenerate time-bin entangled photons at telecom wavelengths with ultrashort pump pulses. Entanglement is shown by performing Bell kind tests of the Franson type with visibilities of up to 91%. As time-bin entanglement can easily be protected from decoherence as encountered in optical fibers, this experiment opens the road for complex quantum communication protocols over long distances. We also investigate the creation of more than one photon pair in a laser pulse and present a simple tool to quantify the probability of such events to happen.

Authors:
; ; ; ;  [1];  [1]
  1. Group of Applied Physics-Optique, University of Geneva, CH-1211, Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
20632416
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 66; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.66.062308; (c) 2002 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BELL THEOREM; DATA TRANSMISSION; DISTANCE; LASER RADIATION; MULTI-PHOTON PROCESSES; OPTICAL FIBERS; PHOTONS; PROBABILITY; PULSES; WAVELENGTHS

Citation Formats

Marcikic, I, Riedmatten, H de, Scarani, V, Zbinden, H, Gisin, N, Tittel, W, and Danish Quantum Optics Center, Institute for Physics and Astronomy, University of Aarhus, Aarhus. Time-bin entangled qubits for quantum communication created by femtosecond pulses. United States: N. p., 2002. Web. doi:10.1103/PhysRevA.66.062308.
Marcikic, I, Riedmatten, H de, Scarani, V, Zbinden, H, Gisin, N, Tittel, W, & Danish Quantum Optics Center, Institute for Physics and Astronomy, University of Aarhus, Aarhus. Time-bin entangled qubits for quantum communication created by femtosecond pulses. United States. https://doi.org/10.1103/PhysRevA.66.062308
Marcikic, I, Riedmatten, H de, Scarani, V, Zbinden, H, Gisin, N, Tittel, W, and Danish Quantum Optics Center, Institute for Physics and Astronomy, University of Aarhus, Aarhus. Sun . "Time-bin entangled qubits for quantum communication created by femtosecond pulses". United States. https://doi.org/10.1103/PhysRevA.66.062308.
@article{osti_20632416,
title = {Time-bin entangled qubits for quantum communication created by femtosecond pulses},
author = {Marcikic, I and Riedmatten, H de and Scarani, V and Zbinden, H and Gisin, N and Tittel, W and Danish Quantum Optics Center, Institute for Physics and Astronomy, University of Aarhus, Aarhus},
abstractNote = {We create pairs of nondegenerate time-bin entangled photons at telecom wavelengths with ultrashort pump pulses. Entanglement is shown by performing Bell kind tests of the Franson type with visibilities of up to 91%. As time-bin entanglement can easily be protected from decoherence as encountered in optical fibers, this experiment opens the road for complex quantum communication protocols over long distances. We also investigate the creation of more than one photon pair in a laser pulse and present a simple tool to quantify the probability of such events to happen.},
doi = {10.1103/PhysRevA.66.062308},
url = {https://www.osti.gov/biblio/20632416}, journal = {Physical Review. A},
issn = {1050-2947},
number = 6,
volume = 66,
place = {United States},
year = {2002},
month = {12}
}