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SUMMARY:Strong converse theorems in quantum information theory - Ciara Mor
 gan (Leibniz University of Hanover)
DTSTART:20140501T131500Z
DTEND:20140501T141500Z
UID:TALK52141@talks.cam.ac.uk
CONTACT:William Matthews
DESCRIPTION:One of the fundamental tasks in quantum information theory is 
 to establish the capacity of noisy quantum channels\, that is\, the maximu
 m rate at which information can be transmitted from one party to another o
 ver the channel with vanishing error. The strong converse theorem addresse
 s the optimality of this rate\, in proving that the error goes to its maxi
 mum value at rates above the capacity. The question of proving a strong co
 nverse theorem for the transmission of various types of information over q
 uantum channels has been a primary focus of recent research\, with the int
 roduction of new proof techniques. In this seminar we introduce the above 
 notions in detail and concentrate\, in particular\, on the question of pro
 ving a strong converse theorem for quantum information transmission.
LOCATION:MR4\,  Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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