Preparing squeezed spin states in a spin-mechanical hybrid system with silicon-vacancy centers

TL;DR

This paper proposes a method to generate squeezed spin states in a diamond-based spin-mechanical system using SiV centers, with potential applications in quantum metrology and information processing.

Contribution

It introduces a novel scheme for preparing squeezed spin states in a spin-mechanical hybrid device utilizing SiV centers in diamond, modeling nonlinear spin interactions.

Findings

Long-range spin-spin interactions can be achieved with large detuning.

The system can be steered to squeezed spin states using an effective one-axis twisting Hamiltonian.

Potential applications in high-precision metrology and quantum information.

Abstract

We present and analyze an effective scheme for preparing squeezed spin states in a novel spin-mechanical hybrid device, which is realized by a single crystal diamond waveguide with built-in silicon-vacancy (SiV) centers. After studying the strain couplings between the SiV spins and the propagating phonon modes, we show that long-range spin-spin interactions can be achieved under large detuning condition. We model these nonlinear spin-spin couplings with an effective one-axis twisting Hamiltonian, and find that the system can be steered to the squeezed spin states in the practical situations. This work may have interesting applications in high-precision metrology and quantum information.