Controllable operation for distant qubits in a two-dimensional quantum network

TL;DR

This paper presents a theoretical scheme for controllably coupling distant qubits in a 2D quantum network using off-resonant Raman transitions, enabling selective quantum gates and parallel operations.

Contribution

It introduces a novel method for coherent manipulation of qubits in a 2D cavity array, allowing arbitrary pairwise coupling and quantum gate implementation.

Findings

Selective coupling between arbitrary atoms achieved.

Quantum gates and parallel operations demonstrated.

Provides a new approach for 2D quantum network control.

Abstract

We propose a theoretical scheme to realize the coherent coupling of multiple atoms in a quantum network which is composed of a two-dimensional (2D) array of coupled cavities. In the scheme, the pairing off-resonant Raman transitions of different atoms, induced by the cavity modes and external fields, can lead to selective coupling between arbitrary atoms trapped in separated cavities. Based on this physical mechanism, quantum gates between any pair of qubits and parallel two-qubit operations can be performed in the 2D system. The scheme provides a new perspective for coherent manipulation of quantum systems in 2D quantum networks.