Researchers outsmart quantum physics

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Researchers outsmart quantum physics

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Researchers at the Max Planck Institute for Gravitational Physics
and Leibniz University of Hanover have produced a laser beam of
especially high quality. In doing so, they have achieved a new world
record in the control of photons by precisely placing the photons in a
specific order.


This results in a reduction in the quantum mechanical intensity
fluctuations, known as photon noise, of 90 percent. Using this
extremely quite light in gravitational wave detectors can drastically
increase their sensitivity. This so-called squeezed light can also be
used in quantum key distribution, where a message is encrypted using a
key whose security is guaranteed by quantum mechanics.

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