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NIST atom interferometry displays new quantum tricks

Physicists at NIST have demonstrated a novel way of making atoms interfere with each other, recreating a famous experiment originally done with light while also making the atoms do things that light just won't do.

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Keywords: nist, atom, interferometry, displays, quantum, tricks, display, trick

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1. NIST physicists boost 'entanglement' of atom pairs
   10-18-2006 · EurekAlert!
   Physicists at NIST have taken a significant step toward transforming entanglement -- an atomic-scale phenomenon described by Albert Einstein as "spooky action at a distance" -- into a practical tool. They demonstrated a method for refining entangled atom pairs, a process called purification, so they can be more useful in quantum computers and communications systems, emerging technologies that exploit the unusual rules of quantum physics for pioneering applications such as "unbreakable" data encryption.
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2. Atom 'noise' may help design quantum computers
   03-02-2007 · EurekAlert!
   Physicists at NIST have found that images of noise in clouds of ultracold atoms trapped by lasers reveal hidden structural patterns, including spacing between atoms and cloud size.
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3. 'Radio wave cooling' offers new twist on laser cooling
   09-14-2007 · EurekAlert!
   NIST physicists have used radio waves to dampen the motion of a miniature mechanical oscillator containing more than a quadrillion atoms, a cooling technique that may open a new window into the quantum world using smaller and simpler equipment.
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4. New quantum key system combines speed, distance
   06-08-2007 · EurekAlert!
   Researchers at NIST have built a prototype high-speed quantum key distribution system, based on a new detector system that achieves dramatically lower noise levels than similar systems.
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5. 'Dead time' limits quantum cryptography speeds
   09-28-2007 · EurekAlert!
   According to a new paper by researchers at NIST and the Joint Quantum Institute, technological and security issues will stall maximum transmission rates at levels comparable to that of a single broadband connection, such as a cable modem, unless researchers reduce 'dead times' in the detectors that receive quantum-encrypted messages.
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6. NIST announces first observation of 'persistent flow' in a gas
   11-27-2007 · EurekAlert!
   Using laser light to stir an ultracold gas of atoms, researchers at NIST and the Joint Quantum Institute have demonstrated the first 'persistent' current in an ultracold atomic gas, a frictionless flow of particles. This form of superfluidity, might help bring to the surface some deep physics insights, and enable super-sensitive rotation sensors that could someday make navigation more precise.
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7. Physicists pin down spin of surface atoms
   09-12-2007 · EurekAlert!
   UC-Berkeley physicists have successfully measured the atomic spin of an isolated atom, one of the necessary steps on the road to quantum computers and spintronics devices. Using a scanning tunneling microscope with a spin-polarized tip, Michael Crommie and colleagues mapped the surface topography and the surface energy levels to determine the spin of adatoms, the first time this has been measured directly.
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8. 'Clutter detector' could cut visual confusion
   08-21-2007 · Massachusetts Institute of Technology (MIT)
   A team of MIT scientists has identified a way to measure visual clutter. Their research could lead to more user-friendly displays and maps, as well as tips for designers seeking to add an attention-grabbing element to a display.
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9. 'Tornadoes' are transferred from light to sodium atoms
   11-09-2006 · EurekAlert!
   For the first time, tornado-like rotational motions have been transferred from light to atoms in a controlled way at NIST. The new quantum physics technique can be used to manipulate Bose-Einstein condensates, a state of matter of worldwide research interest and possibly used in quantum information systems.
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10. Thousands of atoms swap 'spins' with partners in quantum square dance
    07-25-2007 · EurekAlert!
    Physicists at the Commerce Department's National Institute of Standards and Technology (NIST) have induced thousands of atoms trapped by laser beams to swap "spins" with partners simultaneously. The repeated exchanges, like a quantum version of swinging your partner in a square dance but lasting a total of just 10 milliseconds, might someday carry out logic operations in quantum computers, which theoretically could quickly solve certain problems that today's best supercomputers could not solve in years.
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