Directional entanglement of spin-orbit locked nitrogen-vacancy centers by magnons

2025/05/12 by Xue, Zhiping, Ji Zou, Chengyuan Cai +6 · 4 citations
Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Magnetic properties of thin films #Quantum and electron transport phenomena

paper · pdf · doi:10.48550/arxiv.2505.07325

Abstract

We address that the stray magnetic field emitted by the excited quantum states of the nitrogen-vacancy (NV) centers is spin-momentum locked, such that the spin transfer to nearby ferromagnetic nanostructures is unidirectional. This may allow the controlled excitation of propagating magnons by NV centers in diamond. A pair of NV spin qubits exchange virtual magnons in a magnetic nanowire in a chiral manner that leads to directional quantum entanglement. A magnon-based ``quantum-entanglement isolator" should be a useful device in future quantum information technology.

Citations

• Spatially correlated classical and quantum noise in driven qubits: The good, the bad, and the ugly
• Chirality as generalized spin–orbit interaction in spintronics
• Air Quality in the New Delhi Metropolis under COVID-19 Lockdown
• Robust quantum-network memory based on spin qubits in isotopically engineered diamond
• Nitrogen-Vacancy Centers in Diamond: Nanoscale Sensors for Physics and Biology
• Entanglement of Formation of an Arbitrary State of Two Qubits

Cited by

• Classical and quantum theory of magnonic and magnetoelastic nonlinear dynamics in continuum geometries
• Steady-state entanglement of spin qubits mediated by non-reciprocal and chiral magnons
• Chiral magnons for spin-qubit state transfer
• Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond

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