Results 11 to 20 of about 5,151,731 (334)
The private classical capacity and quantum capacity of a quantum channel [PDF]
IEEE Transactions on Information Theory, 2003 A formula for the capacity of a quantum channel for transmitting private classical information is derived. This is shown to be equal to the capacity of the channel for generating a secret key, and neither capacity is enhanced by forward public classical ...
Igor Devetak
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Superadditivity of classical capacity revisited [PDF]
AIP Conference Proceedings, 2014 We introduce new type of superadditivity for classical capacity of quantum channels, which involves the properties of channels’ environment. By imposing different restrictions on the total energy contained in channels’ environment we can consider ...
Oleg V. Pilyavets +2 more
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Classical Capacity of A Quantum Multiple Access Channel [PDF]
Physical Review A, 2000 We consider the transmission of classical information over a quantum channel by two senders. The channel capacity region is shown to be a convex hull bound by the Von Neumann entropy and the conditional Von Neumann entropy.
Hou, Guang, Huang, Minxin, Zhang, Yongde
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General formulas for capacity of classical-quantum channels [PDF]
IEEE Transactions on Information Theory, 2002 The capacity of a classical-quantum channel (or in other words the classical capacity of a quantum channel) is considered in the most general setting, where no structural assumptions such as the stationary memoryless property are made on a channel.
Hayashi, Masahito, Nagaoka, Hiroshi
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Classical Information Capacity of the Bosonic Broadcast Channel [PDF]
2007 IEEE International Symposium on Information Theory, 2007 We show that when coherent-state encoding is employed in conjunction with coherent detection, the Bosonic broadcast channel is equivalent to a classical degraded Gaussian broadcast channel whose capacity region is dual to that of the classical Gaussian ...
Guha, Saikat, Shapiro, Jeffrey H.
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Quantum and classical capacity boosted by a Lorentz transformation [PDF]
Physical Review A, 2014 In this paper we show that the quantum channel between two inertial observers who transmit quantum information by sending realistic photonic wave packets is a well-studied channel in quantum Shannon theory -- the Pauli channel.
Bradler, Kamil +2 more
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On classical capacity of Weyl channels [PDF]
Quantum Information Processing, 2020 We study an old problem concerning the resolution of the question of whether the supremum of the Holevo upper bound for the output of a quantum channel coincides with the classical capacity of this channel.
G. Amosov
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Classical capacity of generalized Pauli channels [PDF]
Journal of Physics A: Mathematical and Theoretical, 2019 Finding the classical capacity of a quantum channel is not easy, yet we are able to analytically calculate this capacity for new channels. We analyze the bounds of the Holevo capacity and classical capacity for the generalized Pauli channels.
Katarzyna Siudzi'nska
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Entanglement-Assisted Communication Surpassing the Ultimate Classical Capacity [PDF]
Quantum Information and Measurement VI 2021, 2021 We report experimental entanglement-assisted communication above the ultimate classical capacity set by the Holevo-Schumacher-Westmorel bound. A high-efficiency entanglement source and a phase-conjugate quantum receiver reap the benefit of pre-shared ...
S. Hao +5 more
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Strong converse for the classical capacity of optical quantum communication channels [PDF]
IEEE Transactions on Information Theory, 2015 We establish the classical capacity of optical quantum channels as a sharp transition between two regimes---one which is an error-free regime for communication rates below the capacity, and the other in which the probability of correctly decoding a ...
Bardhan, Bhaskar Roy +3 more
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