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DTSTAMP:20200229T060038Z
LAST-MODIFIED:20190829T141923Z
DTSTART:20190829T160000Z
DTEND:20190829T170000Z
UID:event2180@bu.edu
URL:http://physics.bu.edu/events/show/2180
SUMMARY:Summer Student Seminar
DESCRIPTION:Featuring JJ Oon (CME) and Xiangyi Meng (CMT)\nHosted by: Eric
Boyers\n\nPart of the Graduate Student Council Events.\n\nJJ Oon (CME)\nNV
Centers for Magnetic Sensing Applications\n\nThe Nitrogen-Vacancy (NV) cent
er is an atom-like defect within diamond that has been studied over the rec
ent decades for reasons including their long decoherence times and spin-dep
endent optical properties. Additionally\, their strong sensitivities to ele
ctromagnetic fields have given birth to numerous applications in precision
sensing. In this talk we discuss how magnetic fields are measured using the
se defects\, and the results of simulations over this summer.\n\nXiangyi Me
ng (CMT)\nFrom Series/Parallel Rules to Zamolodchikov's c-Theorem \n\nIn th
is talk I will show that non-trivial series/parallel rules exist in studyin
g how to optimize entanglement transmission in quantum networks (QN). These
rules allow us to build a new statistical theory\, which shares analogy wi
th classical percolation theory but roots in a fundamental measure of entan
glement\, namely\, concurrence. We find that this concurrence percolation t
heory (ConPT) belongs to a new universality class that differs from its cla
ssical counterpart. I will discuss how to generalize ConPT by g-concurrence
\, a geometric entanglement measure for any-dimensional bipartite systems.
Such a generalization reveals a deeper connection between 1-D QN and the ma
trix product state (MPS)\, the latter of which is capable of representing m
ost ground states faithfully because of its area-law nature in entanglement
entropy. By studying (1+1) conformal field theory and Zamolodchikov's c-th
eorem it has been noticed that entanglement decreases both under local oper
ations and classical communications (LOCC) and along renormalization group
(RG) flows\, the two of which\, I will show\, are indeed equivalent under a
specific RG scheme on MPS/QN.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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