QID Newsletter
Quantum Investment and Development
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Purpose:
To promote the new quantum technologies, including computing,
cryptography,
sensors, storage, and teleportation.
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What�s Going On:
MagiQ Technologies Unveils First Commercial Quantum Cryptography System
at DEMO
2003
Navajo demonstrates commercial viability of unbreakable future-proof key
distribution system; company launches beta program with ten sites across
the
United States
http://www.magiqtech.com/about/navajo.php
2003 Spring Meeting of the APS New England Section: April
11 - 12,
2003, Williams College, Williamstown, Massachusetts. Theme: "Quantum
Bits"
http://www.williams.edu/Physics/aps/index.html
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Articles to Read:
Quantum computing: The qubit duet (by Gianni Blatter)
SUMMARY: Small, but consistent, steps are being taken towards the
realization
of a quantum computer. The demonstration of the coupling of two quantum
bits in
a...
Nature 421, 796 - 797 (20 Feb 2003)
http://www.nature.com/cgi-taf/DynaPage.taf?
file=/nature/journal/v421/n6925/full/421796a_fs.html
Coherent Quantum Dynamics of a Superconducting Flux Qubit
We have observed coherent time evolution between two quantum states of a
superconducting flux qubit comprising three Josephson junctions in a
loop...
These results are promising for future solid-state quantum computing.
http://www.sciencemag.org/cgi/content/abstract/1081045v1
Strange Happenings by Mary Hrovat
Just about everybody calls it weird�the bizarre ability of atomic and
subatomic
particles to be in two states at the same time, rotating this way and
that,
being here and there, simultaneously. But it�s getting less weird�or at
least a
bit more comprehensible�as physicists and other researchers push farther
into
the quantum world. It�s a world of the atom and its parts, a vanishingly
small
world where the physical laws defy our common sense. Indiana University
Bloomington mathematics professors Zhenghan Wang and Michael Larsen are
among
this world�s pioneers...
http://www.indiana.edu/%7Ercapub/v24n3/p25.html
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Web Sites to Visit:
The QComp Onion: Humor [?] about quantum computing
http://www.ar-tiste.com/qcomp_onion/jan2002/front_page.htm
www.QuantumQID.com
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Books and other resources:
A Shortcut Through Time: The Path to a Quantum Computer
by George Johnson
http://www.amazon.com/exec/obidos/tg/detail/-/0375411933/edmundxdejesus
Johnson has been nominated for several awards for earlier books on physics and
physicists (Strange Beauty; Fire in the Mind). Here he sticks mainly to
science, providing a quick overview of a cutting-edge union between quantum
theory and computing. The book begins by describing a computer as "just a box
with a bunch of switches." Although today's computer switches are imbedded in
circuitry, they can in principle be made of any material, like the early banks
of vacuum tubes; Johnson also recalls a tic-tac-toe-playing machine created
from Tinkertoys in the 1970s. An ordinary computer switch, binary in nature,
registers as either a zero or a one, but if a single atom were harnessed as a
switch, its dual nature as both particle and wave means it could
be "superpositioned," simultaneously zero and one. A series of such switches
could handle complex calculations much more swiftly than conventional
computers: an entertaining theory, but impractical. Except that a quantum
computer's ability to factor large numbers-determining the smaller numbers by
which they are divisible-would have a critical application in cryptography,
with a string of atoms used to create (or break) complex codes. After
discussing competing projects that aim to make the theory of quantum computing
a reality, the book concludes with ruminations on the implications of the
projects' possible success. Using "a series of increasingly better cartoons"
and plain language, Johnson's slim volume is so straightforward that readers
without a technical background will have no problem following his chain of
thought.
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The Quantum Biz:
MITRE�s Quantum Information Processing Project
Quantum computing is a new computational paradigm that will have a major impact
on defense-related technologies, affecting technological developments well into
the next millennium.
http://www.mitre.org/news/matters/03-01/mm_03-01_7.shtml
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