Matter-Wave Interferometry of a Levitated Thermal Nano-Oscillator Induced and Probed by a Spin
Mesoscopic physics
Nitrogen-vacancy center
Atom interferometer
Morse potential
Matter wave
DOI:
10.1103/physrevlett.111.180403
Publication Date:
2013-10-29T14:47:38Z
AUTHORS (5)
ABSTRACT
We show how the interference between spatially separated states of center mass (c.m.) a mesoscopic harmonic oscillator can be evidenced by coupling it to spin and performing solely manipulations measurements (Ramsey interferometry). propose use an optically levitated diamond bead containing nitrogen-vacancy spin. The nanoscale size makes motional decoherence due levitation negligible. form spin-motion ensures that scheme works for thermal so moderate feedback cooling suffices. No separate control or observation c.m. state is required thereby one dispenses with cavities, resolved detection, low-mass-dispersion ensembles. controllable relative phase in Ramsey interferometry stems from gravitational potential difference uniquely evidences coherence which involve whole nanocrystal being distinct locations.
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