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

M. D'Angelo; A. Zavatta; V. Parigi; M. Bellini

doi:10.1117/12.680451

29 August 2006 Single-photon time-encoded ebits: remote preparation and homodyne tomography characterization

M. D'Angelo, A. Zavatta, V. Parigi, M. Bellini

Proceedings Volume 6305, Quantum Communications and Quantum Imaging IV; 630503 (2006) https://doi.org/10.1117/12.680451
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

M. D'Angelo, A. Zavatta, V. Parigi, and M. Bellini "Single-photon time-encoded ebits: remote preparation and homodyne tomography characterization", Proc. SPIE 6305, Quantum Communications and Quantum Imaging IV, 630503 (29 August 2006); https://doi.org/10.1117/12.680451

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