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Proceedings Paper

Single-photon time-encoded ebits: remote preparation and homodyne tomography characterization
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Paper Abstract

We present a review of our recent studies concerning remotely prepared entangled bits (ebits) made of a single photon coherently delocalized between two well-separated temporal modes (or time bins). The preparation scheme represents a remotely tunable source for tailoring arbitrary ebits, whether maximally or non-maximally entangled, which is highly desirable for applications in quantum information technology. The remotely prepared ebit is analyzed by performing both single-mode and two-mode homodyne tomography with the ultra-fast balanced homodyne detection scheme recently developed in our lab. Beside the non-classical behavior typical of single-photon Fock states (negative values around the origin), the reconstructed two-mode Wigner function is found to be characterized by an intriguing phase and by correlations between the two distant time bins sharing the single photon.

Paper Details

Date Published: 29 August 2006
PDF: 13 pages
Proc. SPIE 6305, Quantum Communications and Quantum Imaging IV, 630503 (29 August 2006); doi: 10.1117/12.680451
Show Author Affiliations
M. D'Angelo, European Lab. for Nonlinear Spectroscopy (Italy)
A. Zavatta, Istituto Nazionale di Ottica Applicata (Italy)
V. Parigi, European Lab. for Nonlinear Spectroscopy (Italy)
Univ. degli Studi di Firenze (Italy)
M. Bellini, Istituto Nazionale di Ottica Applicata (Italy)

Published in SPIE Proceedings Vol. 6305:
Quantum Communications and Quantum Imaging IV
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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