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This article is cited in 48 scientific papers (total in 48 papers)
Entanglement-assisted capacities of constrained quantum channels
A. S. Holevo Steklov Mathematical Institute, Russian Academy of Sciences
Abstract:
In this paper we fill a gap in previous works by proving the conjectured formula for the classical entanglement-assisted capacity of a quantum channel with additive constraint (such as the Bosonic Gaussian channel). Our main tools are the coding theorem for classical-quantum constrained channels and a finite-dimensional approximation of the input density operators for entanglement-assisted capacity. We also give sufficient conditions under which suprema in the capacity formulas are achieved.
Keywords:
quantum communication channel, classical capacity, entangled state.
Received: 26.11.2002
Citation:
A. S. Holevo, “Entanglement-assisted capacities of constrained quantum channels”, Teor. Veroyatnost. i Primenen., 48:2 (2003), 359–374; Theory Probab. Appl., 48:2 (2004), 243–255
Linking options:
https://www.mathnet.ru/eng/tvp289https://doi.org/10.4213/tvp289 https://www.mathnet.ru/eng/tvp/v48/i2/p359
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