Enhancing spin-phonon and spin-spin interactions utilizing the linear resources in a hybrid quantum system

POSTER

Abstract

Improving the spin-phonon and spin-spin couplings in hybrid quantum systems remains a crucial challenge. Here, we propose an experimentally feasible and simple method for exponentially enhancing the spin-phonon and the spin-spin interactions in a hybrid spin-mechanical setup, using only linear resources. Through modulating the spring constant of the cantilever with a time-dependent pump, we can acquire a tunable and nonlinear 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 ultra-strong coupling regime. This method also 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.

*Y. Z. is supported by the Huibei NSF (No. 2020CFB748), and the DSRF of HUAT(No. BK201906), P. B. L. is supported by the National NSFC(No. 11774285), and NSBRP (No. 2020JC-02). F. N. is supported by: AFOSR(No. FA9550-14-1-0040), ARO( No. W911NF-18-1-0358), AOARD(No. FA2386-18-1-4045), JST(No. JPMJCR1676), JSPS(No. 17-52-50023), and JSPS-FWO(No. VS.059.18N), et al.

Presenters

  • Yuan Zhou

    • Advanced Functional Material and Photoelectric Technology Research Institution, School of Science, Hubei University of Automotive Technology, Shiyan 442002, China

Authors

  • Yuan Zhou

    • Advanced Functional Material and Photoelectric Technology Research Institution, School of Science, Hubei University of Automotive Technology, Shiyan 442002, China

  • Peng Bo Li

    • MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices,

  • Wei Bo Gao

    • Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore

  • Franco Nori

    • RIKEN, Japan and Univ. Michigan, USA
    • RIKEN, Japan
    • RIKEN; and Univ. Michigan.
    • RIKEN, Japan; and Univ. Michigan, USA
    • Riken Japan and Univ. Michigan USA
    • RIKEN, Japan and Univ Michigan, USA
    • Theoretical Quantum Physics Laboratory, Department of Physics, RIKEN Cluster for Pioneering Research, The University of Michigan
    • RIKEN and Univ. of Michigan
    • Riken Japan and Univ Michigan USA
    • RIKEN; and University of Michigan
    • RIKEN and Univ. Michigan
    • RIKEN and Univ of Michigan
    • Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan
    • RIKEN, and University of Michigan
    • Theoretical Quantum Physics, Riken, Japan
    • RIKEN, Japan; and Univ Michigan, USA
    • Theoretical Quantum Physics Laboratory, RIKEN
    • RIKEN, Japan; Univ. Michigan, USA
    • RIKEN, Japan; Uni. Michigan, USA