Dear All,
Next weeks research day on Tuesday will be at Hoenggerberg.
Speaker: Joonwoo Bae
Title: "Structural physical approximations to positive maps and entanglement breaking channels"
Time: 28.4.09 at 5 pm
Place: HIT K 51
Abstract: Structural approximations to
positive, but not completely positive maps are approximate physical
realizations of these nonphysical maps. They find applications in the
design of direct entanglement detection methods. We show that many of
these approximations, in the relevant case of optimal positive maps,
define an entanglement breaking channel and, consequently, can be
implemented via a measurement and state preparation protocol. We also
show how our findings can be useful for the design of better and
simpler entanglement detection methods.
Cheers,
Dejan