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Conferences > IQEC > 2007 > IC4 > IC4_1
  • CLEO/Europe and IQEC 2007 Conference Digest
  • (Optica Publishing Group, 2007),
  • paper IC4_1

Generation and detection of entangled light fields with negative Wigner functions

Alexei Ourjoumtsev, Aurélien Dantan, Rosa Tualle-Brouri, and Philippe Grangier

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Abstract

Quantum communications using continuous variables of the light (quadrature operators) rather than qubits has been quickly developing in last years. For instance, it has been possible to generate light fields with observed negative Wigner functions, as measured by pulsed homodyne quantum tomography. This includes in particular Schrödinger cat states with small amplitudes, known as “Schrödinger kittens” [1], and n=2 Fock states [2].

© 2007 IEEE

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