Generating quantum superposition states in a levitated nanodiamond
Journal of the Optical Society of America B: Optical Physics, ISSN: 1520-8540, Vol: 37, Issue: 6, Page: 1620-1629
2020
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Article Description
We propose a method to generate transiently nonclassical motional states in a levitated optomechanical system. The nonclassicality arises from a nonlinearity induced by coupling the mechanical motion of a nanodiamond carrying a nitrogen-vacancy center with its spin degrees of freedom using a second-order magnetic field gradient (MFG). We employ a Fokker-Planck equation for theWigner distribution to study the effect of the induced nonlinearity on the dynamics of the system. The time evolution of theWigner distribution reveals the transient generation of several nonclassical states. The presence of these states is also confirmed by the negativity of theWigner function. We expect such nonclassical states to have potential applications in quantum information processing and quantum metrology.
Bibliographic Details
Optica Publishing Group
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