Directional entanglement of spin-orbit locked nitrogen-vacancy centers by magnons
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915399987101696 |
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| author | Xue, Zhiping Zou, Ji Cai, Chengyuan Bauer, Gerrit E. W. Yu, Tao |
| author_facet | Xue, Zhiping Zou, Ji Cai, Chengyuan Bauer, Gerrit E. W. Yu, Tao |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_07325 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Directional entanglement of spin-orbit locked nitrogen-vacancy centers by magnons Xue, Zhiping Zou, Ji Cai, Chengyuan Bauer, Gerrit E. W. Yu, Tao Mesoscale and Nanoscale Physics 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. |
| title | Directional entanglement of spin-orbit locked nitrogen-vacancy centers by magnons |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.07325 |