Cooling Close to Absolute Zero Temperature

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Cooling Close to Absolute Zero Temperature

| CELEBRATION OF 125TH BIRTH ANNIVERSARY OF PROFESSOR SATYENDRA NATH BOSE | T W E N T Y S E V E N T H M A R C H 2 0 1 8 BBOOSSEE-125-125 PPUUBBLLIICC LLEECCTTUURREE by Prof. Wolfgang Ketterle John D. MacArthur Professor of Physics, Director, MIT-Harvard Center for Ultracold Atoms,USA Associate Director, Research Laboratory of Electronics, 2001 Nobel Laureate in Physics | Title of the Talk | CCoolingooling CCloselose ttoo AbsolutAbsolutee ZZereroo TTemperaemperaturturee :: aa RRecipeecipe fforor DDiscoiscovverieseries | A B S T R A C T | hy do physicists freeze matter to extremely low temperatures? Why is it worthwhile to cool to temperatures Wwhich are a billion times lower than that of interstellar space? In this talk, I will experimentally demonstrate phenomena at low temperature and discuss new forms of matter. Of special interest are superuids which can ow without dissipation. Recently, we have observed a supersolid which is gaseous, liquid and solid at the same time. | About the Speaker | olfgang Ketterle (born 21 October 1957) is a Einstein condensation in dilute gases in 1995, his group WGerman physicist and professor of physics at the was in 1997 able to demonstrate interference between Massachusetts Institute of Technology (MIT). His research two colliding condensates, as well as the rst realization has focused on experiments that trap and cool atoms to of an "atom laser", the atomic analogue of an optical laser. temperatures close to absolute zero. He led one of the rst In addition to ongoing investigations of BoseEinstein groups to realize Bose-Einstein condensation in these condensates in ultracold atoms, his more recent systems in 1995. For this achievement, as well as early achievements have included the creation of a molecular fundamental studies of condensates, he was awarded the Bose condensate in 2003, as well as a 2005 experiment Nobel Prize in Physics in 2001, together with Eric Allin providing evidence for "high temperature superuidity Cornell and Carl Wieman. After achieving the Bose- in a fermionic condensate. õF¶ÜFWÎ½ ÎFF»F ÙFõF] ÞFñdUÜF ÛFFYPáF= PæF£FFÎF =W Î½ Satyendra Nath Bose National Centre for Basic Sciences, Kolkata Venue SCIENCE CITY - MINI AUDITORIUM at 4.00 pm.

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2005 Annual Report American Physical Society
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