Entanglement Distribution in Star Network Based on Spin Chain in Diamond

Abstract

Since star network of spins was proposed, generating entanglement directly through spin interactions between distant parties became much possible. We propose an architecture which involves coupled spin chains based on nitrogen-vacancy centers and nitrogen defect spins to expand star network, the numerical analysis shows that the length of spin chains $M$ and spin noise can determine the maximally achievable entanglement $E_m$. The entanglement capability of this configuration under effect of disorder and spin loss is also studied. Moreover, it is shown that with this kind of architecture, star network of spins is feasible in measurement of magnetic-field gradient.

5 pages, 8 figures

References in corpus (7)

• Detection and control of individual nuclear spins using a weakly coupled electron spin
• Quenching Spin Decoherence in Diamond through Spin Bath Polarization
• Single-spin magnetometry with multi-pulse sensing sequences
• Experimental Adiabatic Quantum Factorization under Ambient Conditions Based on a Solid-State Single Spin System
• Direct measurement of topological numbers with spins in diamond
• Practicality of spin chain 'wiring' in diamond quantum technologies
• Quantum-limited measurement of magnetic-field gradient with entangled atoms

Cited by in corpus (3)

• Spin-chain-star systems: entangling multiple chains of spin qubits
• Logarithmic growth of peripheral entanglement concentrated via noisy measurements in a star network of spins
• Transforming spin chains with a continuous driving field