The HSW channel capacity for the diagonal unital qudit channels

被引：0
|
作者：
Wu, YC [1 ]
Zhou, ZW [1 ]
Guo, GC [1 ]
机构：
[1] Univ Sci & Technol China, CAS, Key Lab Quantum Informat, Anhua 230026, Peoples R China
来源：
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION | 2004年 / 2卷 / 04期
关键词：
HSW channel capacity; diagonal unital qudit channel; von Neumann entropy;
D O I：
10.1142/S021974990400047X
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The Holevo-Schumacher-Westermoreland (HSW) channel capacity for the diagonal unital qudit channels is considered. In Phys. Rev. A69, 022302, the HSW channel capacity for the diagonal unital qudit channels Phi is given as chi(Phi) = 1 - min(rho)H(Phi(rho)), where minimization is over the input states of the channel. In this paper, using the concavity of von Neumann entropy, we show that using only pure states we can work out its HSW channel capacity. Hence, our result simplifies the computation.
引用
收藏
页码：489 / 493
页数：5
相关论文
共 50 条
  • [21] Hypercontractivity for Semigroups of Unital Qubit Channels
    King, Christopher
    COMMUNICATIONS IN MATHEMATICAL PHYSICS, 2014, 328 (01) : 285 - 301
  • [22] On the capacity of some channels with channel state information
    Caire, G
    Shamai, S
    IEEE TRANSACTIONS ON INFORMATION THEORY, 1999, 45 (06) : 2007 - 2019
  • [23] Ergodic Channel Capacity for Generalized Fading channels
    Papazafeiropoulos, Anastasios
    Ratnarajah, Tharmalingam
    2014 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC), 2014, : 139 - 143
  • [24] On the capacity of some channels with channel state information
    Caire, G
    Shamai, S
    1998 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY - PROCEEDINGS, 1998, : 42 - 42
  • [25] On the channel capacity in MIMO systems for aeronautical channels
    Ghanem, F
    Denidni, T
    Delisle, G
    Ghanem, K
    2005 IEEE/ACES INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND APPLIED COMPUTATIONAL ELECTROMAGNETICS, 2005, : 466 - 469
  • [26] Capacity of fading channels with channel side information
    Goldsmith, AJ
    Varaiya, PP
    IEEE TRANSACTIONS ON INFORMATION THEORY, 1997, 43 (06) : 1986 - 1992
  • [27] Wideband Channel Capacity Maximization With Beyond Diagonal RIS Reflection Matrices
    Demir, Ozlem Tugfe
    Bjornson, Emil
    IEEE Wireless Communications Letters, 2024, 13 (10) : 2687 - 2691
  • [28] On the Alberti-Uhlmann Condition for Unital Channels
    Chakraborty, Sagnik
    Chruscinski, Dariusz
    Sarbick, Gniewomir
    vom Ende, Frederik
    QUANTUM, 2020, 4
  • [29] Effect of unital and non-unital channels on faithfulness of two-qubit entanglement
    Longjiang Liu
    Lingchao Li
    Liu, Longjiang (wlliulongjiang@aliyun.com), 2025, 24 (01)
  • [30] Implementation of controllable universal unital optical channels
    Shaham, A.
    Karni, T.
    Eisenberg, H. S.
    OPTICS EXPRESS, 2019, 27 (17) : 23839 - 23848
12345