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April 2, 2008 | Research News

Twin Beams for Quantum Imaging

JQI researchers have demonstrated a specially interconnected pair of “squeezed light” beams, reduced-noise optical waves whose properties are related to each other to a degree greater than allowed by classical physics.

March 27, 2008 | Research News

Controlling Decoherence

To scientists seeking a basis for future quantum information processing, there is no more urgent or vexing problem than delaying the onset of “decoherence” – the collapse of delicate, but essential, quantum states.

The ability to store and manipulate information of any kind requires a dependable medium with which to record data and perform operations. In a conventional computer, where ...

Lyman alpha photons
March 26, 2008 | Research News

Neutron Detection by Light: A 100-fold Improvement

JQI researchers have developed a new optical method to detect individual neutrons and record them over a range of intensities at least a hundred times greater than existing detectors.

JQI's Roman Lutchyn, Pavel Nagornykh, and Benjamin Lee
March 24, 2008 | People News

JQI Culture: Synergies and Opportunities

JQI’s distinctive commitment to integrating research and education courages multiple collaborations and flexible interactions among faculty, postdocs and students.

Sub-femtosecond precision, NIST
March 20, 2008 | Research News

Sub-Femtosecond Stop Watch For 'Photon Finish' Races

Using a system that can compare the travel times of two photons with sub-femtosecond precision, scientists at the Joint Quantum Institute (a partnership of the National Institute of Standards and Technology (NIST) and the University of Maryland) and Georgetown University have found a remarkably large difference in the time it takes photons to pass through nearly identical stacks of materials with different arrangements of refractive layers.

Proton and Triton
March 10, 2008 | Research News

New Detector Can ‘See’ Single Neutrons Over Broad Range

Researchers at the National Institute of Standards and Technology (NIST) and the University of Maryland have developed a new optical method that can detect individual neutrons and record them over a range of intensities at least a hundred times greater than existing detectors. The new detector, described at the March Meeting of the American Physical Society* by Charles Clark, a ...

Ultracold atoms, NIST
March 10, 2008 | Research News

Stunt Doubles: Ultracold Atoms Could Replicate the Electron ‘Jitterbug’

Ultracold atoms moving through a carefully designed arrangement of laser beams will jiggle slightly as they go, two NIST scientists have predicted. If observed, this never-before-seen “jitterbug” motion would shed light on a little-known oddity of quantum mechanics arising from Paul Dirac’s 80-year-old theory of the electron.

March 5, 2008 | Research News

’Loopy’ Photons Test Hidden-Variable Predictions

JQI researchers have devised a new method for creating pairs of entangled photons to test key postulates of quantum mechanics.

Persistent Flow in a Gas
December 14, 2007 | Research News

NIST Announces First Observation of ‘Persistent Flow' in a Gas

Using laser light to stir an ultracold gas of atoms, researchers at the National Institute of Standards and Technology (NIST) and the Joint Quantum Institute (NIST/University of Maryland) have demonstrated the first “persistent” current in an ultracold atomic gas —a frictionless flow of particles.

Diagram of experimental apparatus. Credit: C. Monroe/UMD
September 7, 2007 | Research News

First Entanglement of Two Separate Ions a Meter Apart: Photons Go the Distance

A team of physicists has exploited one of the most mysterious phenomena in nature to make a major advance toward the long-sought goal of super-fast quantum computing.

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