Electromagnetically Induced Transparency in a Coupled NV Spin-Mechanical Resonator System

Abstract

In this paper, we theoretically investigate the optical absorption spectrum of the nanodiamond system consisting of the nitrogen- vacancy (NV) spin coupled to the mechanical resonator. We show how the widths of electromagnetically induced transparency (EIT) phenomenon windows are manipulated by varying the system parameters. The better transparency phenomenon effect can be achieved by appropriately reducing the decay rates of the mechanical resonator. It is shown that the probe absorption spectrum exhibits an asymmetric property. In particular, the coupling strength between the NV spin and the mechanical oscillation of the nanodiamond can be detected, which is realized by measuring the width of two peaks in the pump-probe spectrum. The study may provide a potential application in the fields of high precision measurement and quantum information processing.