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Proceedings Paper

Quantum entanglement in trimer clusters
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Paper Abstract

Quantum entanglement is a measure of quantum correlations which are responsible for effective work of quantum devices (in particular, quantum computers), significantly outperforming their classical counterparts.1 Here, we investigate quantum entanglement in the trimer clusters consisting of three electron spins sited in vertexes of an isosceles triangle. We consider entanglement of two subsystems of the system. The first subsystem consists of spins sited on the triangle baseline and the second subsystem consists of a spin equidistant from others. We generalized the Bleany-Bowers equation2, 3 for trimer clusters. It is shown that entanglement can emerge only in the case of the antiferromagnetic interaction of the subsystems. An equation for the temperature of the entanglement emergence is derived. The criterion of the double negativity4 is used in order to find the dependence of the entanglement on the temperature.

Paper Details

Date Published: 15 March 2019
PDF: 6 pages
Proc. SPIE 11022, International Conference on Micro- and Nano-Electronics 2018, 110222F (15 March 2019); doi: 10.1117/12.2520034
Show Author Affiliations
E. B. Fel'dman, Institute of Problems of Chemical Physics RAS (Russian Federation)
E. I. Kuznetsova, Institute of Problems of Chemical Physics RAS (Russian Federation)

Published in SPIE Proceedings Vol. 11022:
International Conference on Micro- and Nano-Electronics 2018
Vladimir F. Lukichev; Konstantin V. Rudenko, Editor(s)

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