Two-mode homodyne tomography of time-encoded single-photon ebits |
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| Authors: | A Zavatta M D’Angelo V Parigi M Bellini |
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| Institution: | (1) Istituto Nazionale di Ottica Applicata-CNR, L. go E. Fermi, 6, Florence, I-50125, Italy;(2) LENS, Via Nello Carrara 1, 50019 Sesto Florentino, Florence, Italy;(3) Department of Physics, University of Florence, Sesto Fiorentino, Florence, I-50019, Italy |
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| Abstract: | We have developed a technique for dual-temporal-mode, ultrafast, time-domain, balanced homodyne detection. We have tested it by performing homodyne measurements on pairs of picosecond-duration temporal modes (or “time bins”) carrying a delocalized single photon. The experimental homodyne data have been used to reconstruct both the density matrix and the two-mode Wigner function of the delocalized state, thus showing the correlations existing between the pair of temporal modes carrying the single photon. |
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