[QIP-Sem] MIT Quantum Information Processing Seminar Announcement

[QIP-Sem Mailing List]

Next week's MIT QIP seminar will take place on Monday, Nov. 8 at 
16:00 in 4-237, and features:


Progress Towards Quantum Communication over Long Distances

by Mikhail Lukin (Harvard University Physics Dept.)

ABSTRACT

Quantum communication holds promise for transmitting secure messages 
via quantum cryptography, and for communicating quantum information. 
However,  extending quantum communication techniques to long 
distances represents a conceptual and technological challenge: on the 
one hand photon losses fundamentally limit the range of direct 
communication, on the  other hand quantum signals cannot be amplified 
without adding  noise.  The so-called quantum repeater techniques 
provide a potential solution to  this problem. Implementation of 
these techniques requires coherent light-matter interface including 
quantum memory nodes for photon state  storage  and the means for 
generation and purifying quantum entangled  states.  This talk will 
describe our progress toward developing the new tools and techniques 
required  for constructing quantum repeaters.  Two specific 
approaches based on atomic and solid state systems will be described.
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