In this work, we study the system of three spin qubits exhibiting pure Dzialoshinskii-Moriya interaction, shortly DM interaction. The dynamics and the concurrence-the measure of the entanglement, are analyzed. It is found that higher the DM interaction strength, shorter will be the duration of two-qubit gate operations. © Published under licence by IOP Publishing Ltd.

Balakrishnan S

Department of Physics

School of Advanced Sciences

Vellore Campus

Sahu A

Singh R

Fulltext

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IOP Conference Series: Materials Science and Engineering

Entanglement of spin qubits involving pure DM interaction

It is known that nonlocal two-qubit gates are geometrically represented by tetrahedron called as Weyl chamber. Two edges of the Weyl chamber are formed by SWAP ±α family gates with 0 ≤ α ≤ 1. In this work SWAP ±α are being realized as two spin system with isotropic Heisenberg exchange interaction. The real parameter α is shown to be the function of duration and strength of interaction. Entanglement of the states generated by these two families of gates is studied with concurrence. Significance of time scale in realizing CNOT using SWAP ±1/2 is highlighted. © 2015 AIP Publishing LLC.

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Journal	Data powered by TypesetIOP Conference Series: Materials Science and Engineering
Publisher	Data powered by TypesetIOP Publishing
ISSN	1757-8981
Open Access	No