期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 41, 期 19, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/41/19/195301
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资金
- National Science Foundation [0653301]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0653301] Funding Source: National Science Foundation
We simulate the effect of special excitation pulses on a cold gas of atoms. First, a rotary echo sequence is used to examine the coherent nature of a frozen Rydberg gas. If collective excitation and de-excitation is present with little or no source of dephasing, after these pulses the system should be returned to a state with few excitations, and a strong echo signal should occur. We investigate systems that should display a perfect echo and systems where the interaction between atoms reduces the echo signal. A spin echo sequence is also used on a system of coherent hopping excitations, and we simulate how the strength of a spin echo signal is affected by thermal motion.
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