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DTSTAMP:20261009T203243Z
LAST-MODIFIED:20160224T214729Z
DTSTART:20160324T163000Z
DTEND:20160324T173000Z
UID:event1558@bu.edu
URL:http://physics.bu.edu/internal/events/show/1558
SUMMARY:The Open Bose-Hubbard Dimer
DESCRIPTION:Featuring Tadeusz Pudlik\n\nPart of the PhD Final Oral Exams.\n
	\nDissertation Committee:  David K. Campbell\, Anatoli Polkovnikov\, Claudi
	o Chamon\, Anna Swan\, Emanuel Katz\n\nAbstract:\n\nSome of the simplest sy
	stems accessible to experiments with ultracold gases in optical lattices ar
	e dimers: atoms in a double-well optical lattice\, or atoms in a single opt
	ical trap\, but with two interacting spin states.  These systems are very a
	ccurately represented by the Bose-Hubbard dimer.  A quantum model with many
	 degrees of freedom\, the Bose-Hubbard dimer can be approximated by classic
	al equations of motion for just two variables\, the imbalance in the two we
	lls' atomic populations\, and the wells' relative phase.  We discuss how mu
	ch of the quantum system's behavior is captured by this simple classical pi
	cture\, and use semiclassical quantization to derive analytical corrections
	 to it.\n\nA dissipative bosonic dimer is also an approximate quantum model
	 for the magnetron\, a type of vacuum tube microwave source.  We use it to 
	study magnetron operation for small device sizes (relative to the magnetic 
	length) and low fields\, when quantum effects such as the wave nature of th
	e electron or spontaneous emission cannot be neglected.\n\n![Pudlik](/resou
	rces/event-image/1558/0f4ce5b_small)
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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