Braiding operators can be used to create entangled states out of product states, thus establishing a correspondence between topological and quantum entanglement. This is well-known for maximally entangled Bell and GHZ states and their equivalent states under Stochastic Local Operations and Classical Communication, but so far a similar result for W states was missing. Here we use generators of extraspecial 2-groups to obtain the W state in a four-qubit space and partition algebras to generate the W state in a three-qubit space. We also present a unitary generalized Yang-Baxter operator that embeds the Wn state in a (2n-1)-qubit space.
Generating W states with braiding operators / Padmanabhan, P.; Sugino, F.; Trancanelli, D.. - In: QUANTUM INFORMATION & COMPUTATION. - ISSN 1533-7146. - 20:13-14(2020), pp. 1154-1162. [10.26421/QIC20.13-14-5]
Generating W states with braiding operators
D. Trancanelli
2020
Abstract
Braiding operators can be used to create entangled states out of product states, thus establishing a correspondence between topological and quantum entanglement. This is well-known for maximally entangled Bell and GHZ states and their equivalent states under Stochastic Local Operations and Classical Communication, but so far a similar result for W states was missing. Here we use generators of extraspecial 2-groups to obtain the W state in a four-qubit space and partition algebras to generate the W state in a three-qubit space. We also present a unitary generalized Yang-Baxter operator that embeds the Wn state in a (2n-1)-qubit space.File | Dimensione | Formato | |
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