论文信息 - Quantum entanglement and classical communication through a depolarizing channel

Quantum entanglement and classical communication through a depolarizing channel

Abstract We analyse the role of entanglement for transmission of classical information through a memoryless depolarizing channel. Using the isotropic character of this channel we prove analytically that the mutual information cannot be increased by encoding classical bits into entangled states of two qubits.

[1] Charles H. Bennett,et al. Communication via one- and two-particle operators on Einstein-Podolsky-Rosen states. , 1992, Physical review letters.

[2] Vlatko Vedral,et al. Entanglement in Quantum Information Theory , 1998, quant-ph/9804075.

[3] Osamu Hirota,et al. "Quantum Communication, Computing, and Measurement" , 2012 .

[4] L. Ballentine,et al. Quantum Theory: Concepts and Methods , 1994 .

[5] K. Kraus,et al. States, effects, and operations : fundamental notions of quantum theory : lectures in mathematical physics at the University of Texas at Austin , 1983 .

[6] M. Plenio,et al. Teleportation, entanglement and thermodynamics in the quantum world , 1998 .

[7] Schlienz,et al. Description of entanglement. , 1995, Physical review. A, Atomic, molecular, and optical physics.

[8] C. H. Bennett,et al. Capacities of Quantum Erasure Channels , 1997, quant-ph/9701015.

[9] Charles H. Bennett,et al. Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels. , 1993, Physical review letters.

[10] J. Preskill. Reliable quantum computers , 1997, Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

[11] Ekert,et al. Quantum cryptography based on Bell's theorem. , 1991, Physical review letters.

[12] Michael D. Westmoreland,et al. Sending classical information via noisy quantum channels , 1997 .