The cost of communication

Benjamin Schumacher; Michael D. Westmoreland

doi:10.1364/ICQI.2001.EAPA4

Optical Fiber Communication Conference and International Conference on Quantum Information
2001 OSA Technical Digest Series (Optica Publishing Group, 2001),
paper EAPA4
•https://doi.org/10.1364/ICQI.2001.EAPA4

The cost of communication

Benjamin Schumacher and Michael D. Westmoreland

International Conference on Quantum Information 2001

Rochester, New York United States
ISBN: 1-55752-654-0

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Entanglement, algorithms, and protocols (EAPA)

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B. Schumacher and M. D. Westmoreland, "The cost of communication," in Optical Fiber Communication Conference and International Conference on Quantum Information, 2001 OSA Technical Digest Series (Optica Publishing Group, 2001), paper EAPA4.

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Abstract

We analyze the problem of the cost of sending classical information via quantum channels, when one signal state has zero cost. When the cost function is the free energy of the signal state in the presence of a thermal reservoir, the minimum cost of communication is kT ln 2 per bit.

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