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arXiv · 1910.05507

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

Bo Li·Xiaoxiao Li·Pengbo Li·Tongcang Li
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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.

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Bo Li, Xiaoxiao Li, Pengbo Li, Tongcang Li. 2019-10-12. Preparing squeezed spin states in a spin-mechanical hybrid system with silicon-vacancy centers. https://doi.org/10.1002/qute.202000034

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