Generation of n-qubit W states using Spin Torque

Abstract

We examine here a scheme to generate a W state of an n-qubit system with all-to-all pairwise exchange interaction between n qubits. This relies on sharing of superposed excitations of a smaller number of $q$ qubits among others. We present a bound on the maximal jumps from q to n and formalize a scheme to generate $W_n$ state in $\mathcal{O}({\log }_{4}n)$ stages. We demonstrate this scheme in the context of spin torque based quantum computing architecture that are characterized by repeated interactions between static and flying qubits.

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Cited by in corpus (9)

• One-photon Solutions to Multiqubit Multimode quantum Rabi model
• Deterministic preparation of W states via spin-photon interactions
• Scalable $W$-type entanglement resource in neutral-atom arrays with Rydberg-dressed resonant dipole-dipole interaction
• Unified generation and fast emission of arbitrary single-photon multimode $W$ states
• Circulating Genuine Multiparty Entanglement in Quantum Network
• Transmission based tomography for spin qubits
• Spreading entanglement through pairwise exchange interactions
• Hierarchies among genuine multipartite entangling capabilities of quantum gates
• Transmission and generation of arbitrary W states via an optomechanical interface