Bidirectional controlled quantum teleportation and secure direct communication using five-qubit entangled state

  • Authors:

  • Yuan-Hua Li;Xiao-Lan Li;Ming-Huang Sang;Yi-You Nie;Zi-Sheng Wang

  • Affiliations:

  • Department of physics, Jiangxi Normal University, Nanchang, China 330022 and Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province, Nanchang, China 330022;Department of physics, Jiangxi Normal University, Nanchang, China 330022;Department of physics, Jiangxi Normal University, Nanchang, China 330022;Department of physics, Jiangxi Normal University, Nanchang, China 330022 and Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province, Nanchang, China 330022 and State Key Labora ...;Department of physics, Jiangxi Normal University, Nanchang, China 330022

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

Quantified Score

Hi-index 0.00

Visualization

Abstract

A scheme is presented to implement bidirectional controlled quantum teleportation (QT) by using a five-qubit entangled state as a quantum channel, where Alice may transmit an arbitrary single qubit state called qubit A to Bob and at the same time, Bob may also transmit an arbitrary single qubit state called qubit B to Alice via the control of the supervisor Charlie. Based on our channel, we explicitly show how the bidirectional controlled QT protocol works. By using this bidirectional controlled teleportation, espcially, a bidirectional controlled quantum secure direct communication (QSDC) protocol, i.e., the so-called controlled quantum dialogue, is further investigated. Under the situation of insuring the security of the quantum channel, Alice (Bob) encodes a secret message directly on a sequence of qubit states and transmits them to Bob (Alice) supervised by Charlie. Especially, the qubits carrying the secret message do not need to be transmitted in quantum channel. At last, we show this QSDC scheme may be determinate and secure.