Browse Physics

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A New Look at the Hydrogen Wave Function

Christopher T. L. Smeenk, Physics 6, 58 (2013) – Published May 20, 2013

A newly-developed “quantum microscope” uses photoionization and an electrostatic magnifying lens to directly observe the electron orbitals of an excited hydrogen atom.

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Matter-Wave Self-Interferometry

Ernst Rasel, Physics 5, 135 (2012) – Published December 3, 2012

The demonstration of a single-particle interferometer opens the door to a number of applications, from investigations of gravity to surface impact physics.

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Crystals of Time

Jakub Zakrzewski, Physics 5, 116 (2012) – Published October 15, 2012

Researchers propose how to realize time crystals, structures whose lowest-energy states are periodic both in time and space.

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Nobel Prize—Tools for Quantum Tinkering

Physics 5, 114 (2012) – Published October 12, 2012

David Wineland and Serge Haroche, who studied photons and atoms in new ways, have won the 2012 Nobel Prize in Physics.

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Atom Count Sets New Record

Published September 27, 2012

Researchers demonstrate a scheme that allows counting up to 100 atoms in a given quantum state, which may enable high precision measurements with entangled states.

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Measuring Many-Body Entanglement

Published July 12, 2012

Two proposed experiments may allow measurement of how much entanglement is present in a many-body quantum system.

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Turning the Optomechanical Tables

Published June 14, 2012

An optomechanical system in which light and matter exchange roles promises new kinds of quantum states.

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Detecting Quantum Motion in a Gas

Physics 5, 62 (2012) – Published June 1, 2012

Variations in density in an ultracold gas reveal sound waves of quantum origin.