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Proceedings Paper

Encoding M classical bits in the relative arrival time of dense-coded photons
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Paper Abstract

We present a scheme to encode M extra classical bits to a dense-coded pair of photons. By tuning the delay of an entangled pair of photons to one of 2M time-bins and then applying one of the quantum dense coding protocols, a receiver equipped with a synchronized clock of reference is able to decode M bits (via classical time-bin encoding) + 2 bits (via quantum dense coding). This protocol, yet simple, does not dispense several special features of the used programmable delay apparatus to maintain the coherence of the two-photon state. While this type of time-domain encoding may be thought to be ideally of boundless photonic capacity (by increasing the number of available time-bins), errors due to the environmental noise and the imperfect devices and channel evolve with the number of time-bins.

Paper Details

Date Published: 29 April 2016
PDF: 7 pages
Proc. SPIE 9900, Quantum Optics, 99000L (29 April 2016); doi: 10.1117/12.2227482
Show Author Affiliations
Salem F. Hegazy, Cairo Univ. (Egypt)
Zewail City of Science and Technology (Egypt)
Ahmed E. Morra, Menoufia Univ. (Egypt)
Zewail City of Science and Technology (Egypt)
Salah S. A. Obayya, Zewail City of Science and Technology (Egypt)

Published in SPIE Proceedings Vol. 9900:
Quantum Optics
Jürgen Stuhler; Andrew J. Shields, Editor(s)

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