Transferring information through a mixed-five-spin chain channel

doi:10.1088/1674-1056/25/8/080307

Abstract We initially introduce one-dimensional mixed-five-spin chain with Ising-XY model which includes mixture of spins-1/2 and spins-1. Here, it is considered that nearest spins (1, 1/2) have Ising-type interaction and nearest spins (1/2, 1/2) have both XY-type and Dzyaloshinskii-Moriya (DM) interactions together. Nearest spins (1, 1) have XX Heisenberg interaction. This system is in the vicinity of an external homogeneous magnetic field B in thermal equilibrium state. We promote the quantum information transmitting protocol verified for a normal spin chain with simple model (refer to Rossini D, Giovannetti V and Fazio R 2007 Int. J. Quantum Infor. 5 439) (widely in reference: Giovannetti V and Fazio R 2005 Phys. Rev. A 71 032314) by means of considering the suggested mixed-five-spin chain as a quantum communication channel for transmitting both qubits and qutrits ideally. Hence, we investigate some useful quantities such as quantum capacity and quantum information transmission rate for the system. Finally, we conclude that, when the DM interaction between spins (1/2, 1/2) increases the system is a more ideal channel for transmitting information.

Keywords: Dzyaloshinskii-Moriya interaction XX Heisenberg interaction communication channel transmission rate

Received: 07 March 2016
Revised: 07 April 2016
Accepted manuscript online:

PACS:	03.67.-a	(Quantum information)
	03.67.Hk	(Quantum communication)
	05.60.Gg	(Quantum transport)

Corresponding Authors: Hamid Arian Zad
E-mail: arianzad.hamid@yahoo.com

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Hamid Arian Zad, Hossein Movahhedian Transferring information through a mixed-five-spin chain channel 2016 Chin. Phys. B 25 080307

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