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Maximal entanglement and state transfer using Arthurs–Kelly type interaction for qubits

  • Subhayan SahuEmail author
  • Shasanka M. Roy
Regular Article

Abstract

We study entanglement generation between a system qubit and three apparatus qubits using an exactly solvable Arthurs–Kelly type model. We demonstrate the possibility of generating an EPR-like maximally entangled system-apparatus state, in which the second qubit of the usual EPR state is replaced by a three qubit state. We design a very simple protocol to transfer the unknown state of the system onto one of the apparatus qubits which can then be sent elsewhere via a quantum channel. This protocol can be seen as an alternative teleportation scheme.

Graphical abstract

Keywords

Quantum Information 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of PhysicsIndian Institute of ScienceBangaloreIndia
  2. 2.HBCSE, Tata Institute of Fundamental ResearchMumbaiIndia

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