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Classical communication with quantum receivers: towards violating classical Shannon channel capacity (Conference Presentation)
Author(s): Ivan Burenkov; Sergey V. Polyakov
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Paper Abstract

In classical digital communications two main families of “M-ary” modulation schemes are generally distinguished: bandwidth limited and power limited. The canonical comparison of these modulation methods is based on normalized data rate (R/W) (bits per second per hertz of bandwidth) and the signal to noise rate per bit required to achieve a given error probability for different M. In a classical picture, the two families reside in two separate semi-plains R/W < 1 and R/W > 1, i.e. energy efficiency and bandwidth efficiency cannot be optimized at the same time. However, we find an alphabet family that can be paired with a quantum receiver to simultaneously optimize bandwidth and power efficiency of a communication channel. Particularly we found that coherent frequency shift keying (CFSK) gives rise to a family of communication protocols that are bandwidth limited in nature, but whose bandwidth usage can be optimized so that R/W>1 for a range of alphabet lengths M, while power sensitivity beats that of power-limited protocols. We will report our theoretical findings and experimental progress towards implementation of this protocol family.

Paper Details

Date Published: 4 March 2019
Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330I (4 March 2019); doi: 10.1117/12.2510091
Show Author Affiliations
Ivan Burenkov, Joint Quantum Institute, Univ. of Maryland (United States)
National Institute of Standards and Technology (United States)
Sergey V. Polyakov, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 10933:
Advances in Photonics of Quantum Computing, Memory, and Communication XII
Philip R. Hemmer; Alan L. Migdall; Zameer Ul Hasan, Editor(s)

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