Multi-qudit states generated by unitary braid quantum gates based on Temperley-Lieb algebra

¹ Department of Physics, Faculty of Core Research, Ochanomizu University - 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan
² Department of Physics, Tamkang University - Tamsui 25137, Taiwan, R.O.C.

Received: 4 January 2017
Accepted: 29 June 2017

Abstract

Using a braid group representation based on the Temperley-Lieb algebra, we construct braid quantum gates that could generate entangled n-partite D-level qudit states. D different sets of Dⁿ × Dⁿ unitary representation of the braid group generators are presented. With these generators the desired braid quantum gates are obtained. We show that the generalized GHZ states, which are maximally entangled states, can be obtained directly from these braid quantum gates without resorting to further local unitary transformations. We also point out an interesting observation, namely for a general multi-qudit state there exists a unitary braid quantum gate based on the Temperley-Lieb algebra that connects it from one of its component basis states, if the coefficient of the component state is such that the square of its norm is no less than 1/4.