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Tag: quantum physics

One concept that gives physicists a Casper-like haunting

One concept that gives physicists a Casper-like haunting

May 19, 2015

One of the most profound forms of “quantum weirdness” lies at the heart of our butt/chair/empty space question. It’s called the wave-particle duality. It tells us that something, like an electron, can behave like a particle — if you do experiments that look for particle-like behavior.

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Lecture by world-renowned physicist brings quantum mechanics to the masses

Lecture by world-renowned physicist brings quantum mechanics to the masses

September 8, 2014

Anton Zeilinger, one of the world’s leading experts in the field of quantum optics, will present a free, public lecture Tuesday at the University of Rochester. The talk is designed to convey the exciting frontiers of quantum mechanics to a general audience.

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New quantum particle calculations make waves in field

New quantum particle calculations make waves in field

September 5, 2014

The huge multidimensional systems have complicated wave functions that the old method is not efficient enough to measure, Mohammad Mirhosseini, a graduate student at the University of Rochester and lead author on the paper describing the new technique, told Live Science. The new method makes it possible to calculate wave functions much faster and could help scientists further develop quantum technology.

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Researchers send electricity, light along same super-thin wire

Researchers send electricity, light along same super-thin wire

September 4, 2014

A new combination of materials can efficiently guide electricity and light along the same tiny wire, a finding that could be a step towards building computer chips capable of transporting digital information at the speed of light.

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Doing more with less: New technique efficiently finds quantum wave functions

Doing more with less: New technique efficiently finds quantum wave functions

August 28, 2014

University researchers have introduced a new method, called compressive direct measurement, that allowed the team to reconstruct a quantum state at 90 percent fidelity using only a quarter of the measurements required by previous methods.

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Entangled photons make a picture from a paradox

Entangled photons make a picture from a paradox

August 27, 2014

Physicists have devised a way to take pictures using light that has not interacted with the object being photographed. This form of imaging uses pairs of photons, twins that are ‘entangled’ in such a way that the quantum state of one is inextricably linked to the other.

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Duality principle is ‘safe and sound’

Duality principle is ‘safe and sound’

August 26, 2014

Decades of experiments have verified the quirky laws of quantum theory again and again. So when scientists in Germany announced in 2012 an apparent violation of a fundamental law of quantum mechanics, a physicist at the University of Rochester was determined to find an explanation.

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Duality principle is “safe and sound”: Researchers clear up apparent violation of quantum mechanics’ wave-particle duality

August 25, 2014

When scientists in Germany announced in 2012 an apparent violation of a fundamental law of quantum mechanics, The results were both “strange” and “incredible.” It took Robert Boyd and his colleagues nearly a year and a half to figure out what was going on.

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Physicists map path of quantum particles for first time ever

Physicists map path of quantum particles for first time ever

August 11, 2014

“It’s a great breakthrough in terms of being able to monitor quantum systems,” Andrew Jordan, a physicist at the University of Rochester, who worked on the original theory, told Live Science. “We’re just scratching the surface of the kinds of physics permitted here.”

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Quantum particles take the road most traveled

Quantum particles take the road most traveled

August 6, 2014

Physicists have developed a way to isolate the wacky quantum world and peer into it in a noninvasive way; this allows them to map the path that particles are most likely to take when changing from one state to another. “It’s a great breakthrough in terms of being able to monitor quantum systems,” Andrew Jordan, a physicist at the University of Rochester, who worked on the original theory, told Live Science. “We’re just scratching the surface of the kinds of physics permitted here.”

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