Polar quantum channel coding with optical multi-qubit entangling gates for capacity-achieving channels

  • Authors:

  • Ying Guo;Moon Ho Lee;Guihua Zeng

  • Affiliations:

  • School of Information Science & Engineering, Central South University, Changsha, China 410083 and State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electro ...;Institute of Information and Communication, Chonbuk National University, Jeonju, Korea 561-756;State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai, China 200030

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

We demonstrate a fashion of quantum channel combining and splitting, called polar quantum channel coding, to generate a quantum bit (qubit) sequence that achieves the symmetric capacity for any given binary input discrete quantum channels. The present capacity is achievable subject to input of arbitrary qubits with equal probability. The polarizing quantum channels can be well-conditioned for quantum error-correction coding, which transmits partially quantum data through some channels at rate one with the symmetric capacity near one but at rate zero through others.