Physics – Quantum Physics
Scientific paper
2005-02-24
Physics
Quantum Physics
To Appear in SPIE Proceedings Volume 5735
Scientific paper
10.1117/12.601705
We show that, by simple modifications of the usual three-level $\Lambda$-type scheme used for obtaining electromagnetically induced transparency (EIT), phase dependence in the response of the atomic medium to a weak probe field can be introduced. This gives rise to phase dependent susceptibility. By properly controlling phase and amplitudes of the drive fields we obtain variety of interesting effects. On one hand we obtain phase control of the group velocity of a probe field passing through medium to the extent that continuous tuning of the group velocity from subluminal to superluminal and back is possible. While on the other hand, by choosing one of the drive fields to be a standing wave field inside a cavity, we obtain sub-wavelength localization of moving atoms passing through the cavity field.
Kapale Kishore T.
Sahrai Mostafa
Tajali Habib
Zubairy Suhail M.
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