期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.153602
关键词
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资金
- National Natural Science Foundation of China [11774285]
- Natural Science Basic Research Program of Shaanxi [2020JC-02]
- Natural Science Foundation of Hubei Province [2020CFB748]
- Doctoral Scientific Research Foundation of HUAT [BK201906]
- MURI Center for Dynamic Magneto-Optics via the Air Force Office of Scientific Research (AFOSR) [FA9550-14-1-0040]
- Army Research Office (ARO) [W911NF-18-1-0358]
- Asian Office of Aerospace Research and Development (AOARD) [FA2386-18-1-4045]
- Japan Science and Technology Agency (JST) (Q-LEAP program)
- Japan Science and Technology Agency (JST) (CREST Grant) [JPMJCR1676]
- Japan Society for the Promotion of Science (JSPS) (JSPS-RFBR Grant) [17-52-50023]
- Japan Society for the Promotion of Science (JSPS) (JSPS-FWO Grant) [VS.059.18N]
- RIKEN-AIST Challenge Research Fund
- Foundational Questions Institute (FQXi)
- NTT PHI Laboratory
Hybrid spin-mechanical setups offer a versatile platform for quantum science and technology, but improving the spin-phonon as well as the spin-spin couplings of such systems remains a crucial challenge. Here, we propose and analyze an experimentally feasible and simple method for exponentially enhancing the spin-phonon and the phonon-mediated spin-spin interactions in a hybrid spin-mechanical setup, using only linear resources. Through modulating the spring constant of the mechanical cantilever with a time-dependent pump, we can acquire a tunable and nonlinear (two-phonon) drive to the mechanical mode, thus amplifying the mechanical zero-point fluctuations and directly enhancing the spin-phonon coupling. This method allows the spin-mechanical system to be driven from the weak-coupling regime to the strong-coupling regime, and even the ultrastrong coupling regime. In the dispersive regime, this method gives rise to a large enhancement of the phonon-mediated spin-spin interactions between distant solid-state spins, typically two orders of magnitude larger than that without modulation. As an example, we showthat the proposed scheme can apply to generating entangled states ofmultiple spins with high fidelities even in the presence of large dissipations.
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