quantum weapons

quantum technology is already here.

The spookytechnologies make use of mostly
sidestepped quantum phenomena that emerge from
the formal theory but still perplex us. These surround
the nature of the universe itself, how it is
interconnected, and how the quantum world becomes
the classical world. Measurement is one example. In
contrast to a classical object (like watching an apple
fall), a quantum object becomes fundamentally altered
after observation. When exactly does the universe
stop acting quantum ( “decoherence”) and start
behaving classically? Through exquisite control can
we make a system stay “quantum coherent” far into
classical territory? A dramatic natural example is
superconductivity, a quantum many-body
phenomenon where long-range phase coherence
allows practically zero electric current resistance at
temperatures well above absolute zero.
The king of spooky quantumness is quantum
entanglement. As physicists define it,
“entanglement” refers to a peculiar quality of the
known universe whereby quantum objects in certain
situations cannot be described separately, even
though they may be separated in space. In other
words, if an atom in London is entangled with an
atom in Tokyo, they are still one quantum system,
which can only be understood together. Entanglement
is a multi-object generalization of quantum
superposition, another astounding quantum trait,
where a particle can exist in two states at once (here
and there, up and down). Both properties have been
experimentally confirmed.
Spookytechnology covers more than quantum
computers. Comparatively simple cryptographic
systems based on quantum entanglement have already
achieved practical deployment. Beyond information
technology, specialized hardware devices or systems
based on quantum coherent control or entanglement
are also in development. Consider the case of what
some call “quantum imaging.” An example where
the super-saturated “quantum” becomes a detriment,
“quantum imaging” can refer to new ideas for
entanglement-based sub-wavelength imaging and
lithography. Yet magnetic resonance imaging (MRI)
departments across the world have been called
“quantum imaging” groups long before the advent of
entanglement-based design ideas. MRI has always
been quantum, involving the manipulation of spins
in the body, which are purely quantum aspects of
atomic nuclei or electrons. These quantum
possibilities weren’t dreamed of when nuclear
magnetic resonance was conceived.
But quantum
physics will never become intuitive, even if it
becomes commonplace. If we put 1995 as the “this
can be done” moment for spookytechnology, that
would put a 2010-15 time frame to mainstream
industry penetration. The scope and depth of these
historical and scientific developments should not go
unrecognized. Spookytechnology will find its place
in the increasingly dense line of major technological
revolutions began with the industrial revolution in
the eighteenth century: quantum, info, bio, nano,
spooky.

quantum radar

Embodiments of systems and methods for radar systems using entangled quantum particles, referred to as quantum radar, are disclosed herein. Entangled beams allow the absorption spectrum and the resolution limit of quantum radar systems to be selected independently of one another. Thus, while classical radar systems must compromise between range and resolution, quantum radar systems can simultaneously achieve the low attenuation/high range associated with a long wave length and the high resolution associated with a short wave length.

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About jeanne

artist, grandma, alien

Posted on December 14, 2011, in quantum, research. Bookmark the permalink. Leave a comment.

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