Coherent atomic states prepared by laser field can have quantum interference
between the different transition amplitudes. Therefore, the medium susceptibility
and optical response can be engineered, leading to many interesting phenomena, such
as coherent population trapping (CPT), electromagnetically induced transparency
(EIT), and lasing without inversion (LWI).
We studied the coherence effects in various prototype atomic systems, and found
many interesting applications. We solved the slow light bandwidth problem by decomposing
the pulse and matching each frequency to its EIT window using a magnetic
field gradient. We also considered the probe field deflection induced by the driving
field distribution in EIT, and showed that even a broadband pulse can be deflected
without serious spreading. In the fast light area, we examined the effects of noise and
parameter deviations in a bichromatic Raman type white light cavity. Taking advantage
of the adjustable absorption of EIT, we showed that EIT in a laser cavity can
have either first-order or second-order phase transitions. Last but not least, we show
that the adiabatic population transfer can be used to reverse the weak measurement
of an arbitrary field with finite photon number.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2010-05-8046 |
| Date | 2010 May 1900 |
| Creators | Sun, Qingqing |
| Contributors | Zubairy, Suhail, Scully, Marlan |
| Source Sets | Texas A and M University |
| Language | English |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | application/pdf |
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