Quantum Physics
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Quantum PhysicsQuantum cryptography could shed test for hackers
An added protection of a proposed quantum cryptography method makes eavesdropping nearly impossible.
By Andrew Grant -
Quantum PhysicsNext-gen quantum teleportation in just 2 photons
Researchers teleport quantum information between two photons instead of the standard three.
By Andrew Grant -
Quantum PhysicsMajor step taken toward error-free computing
Physicists have achieved nearly perfect control over a bit of quantum information, bringing them a step closer to error-free computation.
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Quantum PhysicsShor’s code-breaking algorithm inspired reflections on quantum information
Twenty years ago, physicists met in Santa Fe to explore the ramifications of quantum information.
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Quantum PhysicsExcitons’ motions captured in images
Scientists have observed how quasiparticles called excitons move.
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Quantum PhysicsQuantum experts discuss the measurement problem: A transcript from 1994
A fairly complete transcript of a discussion about quantum physics on May 19, 1994, the last day of a workshop in Santa Fe, N.M., evolves into a more general discussion of the interpretation of quantum mechanics and the quantum measurement problem.
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Quantum PhysicsRobert Redford film foretold Shor’s quantum computing bombshell
Twenty years ago, Peter Shor showed how quantum computers could break secret codes, turning the movie Sneakers from fiction to fact.
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Quantum PhysicsSmall step taken for quantum communication
A single atom can change the state of a photon, which may help build quantum networks.
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Quantum PhysicsU.S. marches to tick of new clock
The atomic clock NIST-F2 has launched as the country’s official civilian time and frequency standard.
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Quantum PhysicsFinding a quantum way to make free will possible
Maybe quantum influences from the Big Bang make humans unpredictable, permitting the possibility of free will.
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Quantum PhysicsQuantum timekeeping
Recent advances in controlling the quantum behavior of particles have inspired physicists to dream of a global clock that would tell the same time everywhere. It would be hundreds of times as accurate as current atomic clocks.
By Andrew Grant -
Quantum PhysicsEinstein was wrong about spooky quantum entanglement
Einstein’s biggest blunder wasn’t about vacuum energy in space, but in confusing people about quantum entanglement.