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Dear All,
SOLID STATE & STRUCTURAL CHEMISTRY UNIT
INDIAN INSTITUTE OF SCIENCE
BANGALORE – 560 012
SEMINAR
Speaker: Ms. Arpita Mukherjee
Title
Slow Light
Date & Time: Thursday 27th September, 2018 at 4.00 PM
Venue: SSCU AUDITORIUM
Abstract:
Around 1864 James Clerk Maxwell determined the velocity of light in vacuum considering that light is an electromagnetic wave. Later on Albert Einstein proposed from the theory of relativity that light speed is a universal constant in vacuum. However, when light enters a medium the velocity of light decreases due to light-matter interaction. The refractive index of the medium governs the velocity of light propagating inside the medium. Generally for a pulse of light propagating inside a medium, the phase velocity depends only on the refractive index of the medium, while the group velocity also depends on the variation of refractive index with frequency. In 1999, Danish Physicist Lene Hau showed that the group velocity of light can be slowed in certain media to a speed as slow as that of a good bicycle (17m/sec), or even slower. This seminar will describe methods used to slow down the speed of light to this extremely slow regime.
References:
[1] Ketterle et al. Phys. Rev. Lett. 3969, 75, 1995
[2] Harris et al. Phys. Rev. Lett. 2593, 66, 1991
[3] Hau et al. Nature 594, 397, 1999
[4] Cornell et al. Nature 198, 269, 1995
[5] Mark Fox, Quantum optics An Introduction, Oxford university press, 2009
[6] Hau et al. Nature 490, 409, 2001

ALL ARE CORDIALLY INVITED TO ATTEND Convener
Coffee/Tea : 3.30 PM to 3.45 PM

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