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ENTANGLEMENT IN A 3-SPIN HEISENBERG-XY CHAIN WITH NEAREST-NEIGHBOR INTERACTIONS, SIMULATED IN AN NMR QUANTUM SIMULATOR

Rao, Rama Koteswara E and Kumar, Anil (2012) ENTANGLEMENT IN A 3-SPIN HEISENBERG-XY CHAIN WITH NEAREST-NEIGHBOR INTERACTIONS, SIMULATED IN AN NMR QUANTUM SIMULATOR. In: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 10 (4).

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Official URL: http://dx.doi.org/10.1142/S0219749912500396

Abstract

The evolution of entanglement in a 3-spin chain with nearest-neighbor Heisenberg-XY interactions for different initial states is investigated here. In an NMR experimental implementation, we generate multipartite entangled states starting from initial separable pseudo-pure states by simulating nearest-neighbor XY interactions in a 3-spin linear chain of nuclear spin qubits. For simulating XY interactions, we follow algebraic method of Zhang et al. Phys. Rev. A 72 (2005) 012331]. Bell state between end qubits has been generated by using only the unitary evolution of the XY Hamiltonian. For generating W-state and GHZ-state a single qubit rotation is applied on second and all the three qubits, respectively after the unitary evolution of the XY Hamiltonian.

Item Type: Journal Article
Keywords: Entanglement generation;Heisenberg-XY spin chain;NMR quantum information processing
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 28 Aug 2012 06:48
Last Modified: 28 Aug 2012 06:48
URI: http://eprints.iisc.ernet.in/id/eprint/44984

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