Report
Strong tunable spin-spin coupling with cavity-magnon criticality
| العنوان: | Strong tunable spin-spin coupling with cavity-magnon criticality |
|---|---|
| المؤلفون: | Peng, Ma-Lei, Tian, Miao, Chen, Xue-Chun, Zhang, Guo-Qiang, Li, Hai-Chao, Xiong, Wei |
| سنة النشر: | 2023 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Strong long-distance spin-spin coupling is desperately demanded for solid-state quantum information processing, but it is still challenged. Here, we propose a hybrid quantum system, consisting of a coplanar waveguide (CPW) resonator weakly coupled to a single nitrogen-vacancy spin in diamond and a yttrium-iron-garnet (YIG) nanosphere holding Kerr magnons, to realize strong long-distance spin-spin coupling. With a strong driving field on magnons, the Kerr effect can squeeze magnons, and thus the coupling between the CPW resonator and the squeezed magnons is {\it exponentially enhanced}, which produces two cavity-magnon polaritons, i.e., the high-frequency polariton (HP) and low-frequency polariton (LP). When the enhanced cavity-magnon coupling approaches the critical value, the spin is fully decoupled from the HP, while the coupling between the spin and the LP is significantly improved. In the dispersive regime, a strong spin-spin coupling is achieved with accessible parameters. The coupling distance can be up to centimeter scale, limited by the cavity size. Our proposal provides a pave way to manipulate solid spins with cavity-magnon polaritons. Comment: 10 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2304.13553 |
| رقم الانضمام: | edsarx.2304.13553 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |