Spin-Energy Entanglement of a Time-Focused Neutron
| Autor: | Leiner, J. C., Kuhn, S. J., McKay, S., Jochum, J. K., Li, F., Irfan, A. A. M., Funama, F., Mettus, D., Beddrich, L., Franz, C., Shen, J., Parnell, S. R., Dalgliesh, R. M., Loyd, M., Geerits, N., Ortiz, G., Pfleiderer, C., Pynn, R. |
|---|---|
| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Intra-particle entanglement of individual particles such as neutrons could enable a new class of scattering probes that are sensitive to entanglement in quantum systems and materials. In this work, we present experimental results demonstrating quantum contextuality as a result of entanglement between the spin and energy modes (i.e., degrees of freedom) of single neutrons in a beam using a pair of resonant radio-frequency neutron spin flippers in the MIEZE configuration (Modulated IntEnsity with Zero Effort). We verified the mode-entanglement by measuring a Clauser-Horne-Shimony-Holt (CHSH) contextuality witness $S$ defined in the spin and energy subsystems, observing a clear breach of the classical bound of $|S| \leq 2$, obtaining $S = 2.40 \pm 0.02$. These entangled beams could enable novel approaches for directly probing dynamics and entanglement in quantum materials whose low-energy excitation scales match those of the incident entangled neutron. Comment: 10 pages, 7 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|