期刊
PHYSICAL REVIEW A
卷 88, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.88.043429
关键词
-
资金
- NSERC
Coherent superpositions of the 49s(1/2) and 48s(1/2) Rydberg states of cold Rb-87 atoms were studied near the surface of an atom chip. The superpositions were created and manipulated using microwaves resonant with the two-photon 49s(1/2)-48s(1/2) transition. Coherent behavior was observed using Rabi flopping, Ramsey sequences, spin echo, and spin locking. These results are discussed in the context of Rydberg atoms as electric field noise sensors. We consider the coherence of systems quadratically coupled to noise fields with 1/f(kappa) power spectral densities (kappa approximate to 1).
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