Parallel multi-two-qubit SWAP gate via QND interaction of OAM light and atomic ensemble

• URL: http://arxiv.org/abs/2306.16565v1
• Date: Wed, 28 Jun 2023 21:13:08 GMT
• Title: Parallel multi-two-qubit SWAP gate via QND interaction of OAM light and atomic ensemble
• Authors: E.N. Bashmakova, E.A. Vashukevich, and T. Yu. Golubeva
• Abstract summary: We propose a scheme for performing a SWAP logic operation in discrete variables. We also demonstrate the possibility of implementing a parallel multi-two-qubit quantum SWAP gate.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Nowadays quantum SWAP gate has become an integral part of quantum computing, so investigation of methods of its realization seems to be an important practical problem for various quantum-optical and information applications. In the present paper we propose a scheme for performing a SWAP logic operation in discrete variables in the framework of quantum non-demolition interaction between an atomic ensemble and a multimode light with orbital angular momentum. We discuss in detail the procedure for revealing two-qubit closed subsystems on a set of atomic and field states for different values of the driving field orbital momentum. We also demonstrate the possibility of implementing a parallel multi-two-qubit quantum SWAP gate.

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