Transmission of polarization quantum state through a fiber optic channel by swapped time-bin state

Salem F. Hegazy; Salah S. A. Obayya; Bahaa E. A. Saleh

doi:10.1117/12.2307576

21 May 2018 Transmission of polarization quantum state through a fiber optic channel by swapped time-bin state

Salem F. Hegazy, Salah S. A. Obayya, Bahaa E. A. Saleh

Proceedings Volume 10674, Quantum Technologies 2018; 106741F (2018) https://doi.org/10.1117/12.2307576
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

The time-bin quantum state is known to be highly robust against decoherence effects in both fiber-optic and atmospheric channels, a unique feature that renders the time degree of freedom (DOF) more appropriate for quantum communication in these channels. In this paper, we present a scheme to deliver with high fidelity an arbitrary, unknown quantum state in polarization or spatial DOFs over a stochastic channel without need for compensation. The sender swaps the polarization or spatial quantum state for a time-bin state of the photon before signaling it over the random channel, and the receiver swaps the state back. Because the signaled photon is assumed to be in a single spatial or polarization mode, no modal-dependent channel effects perturb the time-bin state. We find that by migration to the time bin, the fidelity of the transferred state is boosted by a margin dependent on the time-bin period and the standard deviations of the statistical parameters of the channel.

Citation Download Citation

Salem F. Hegazy, Salah S. A. Obayya, and Bahaa E. A. Saleh "Transmission of polarization quantum state through a fiber optic channel by swapped time-bin state", Proc. SPIE 10674, Quantum Technologies 2018, 106741F (21 May 2018); https://doi.org/10.1117/12.2307576

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