Viewpoints

Single Dot Meets Single Ion

Single Dot Meets Single Ion

March 23, 2015

Nika Akopian

Researchers show that a single photon can transfer an excitation from a quantum dot to an ion.

Superconductivity with a Twist

Superconductivity with a Twist

March 16, 2015

Michael R. Norman

The discovery of superconductivity in a manganese-based “helical” magnet opens a new path to explore the relationship between superconductivity and magnetism.

More Power to Atom Interferometry

More Power to Atom Interferometry

March 11, 2015

Alexander D. Cronin and Raisa Trubko

An atom interferometer embedded in an optical cavity requires less power compared to previous techniques and may work with a wider variety of atoms and molecules.

A Clearer View of a Dusty Sky

A Clearer View of a Dusty Sky

March 9, 2015

Nils W. Halverson

A signal in the cosmic microwave background thought to be evidence of inflation in the early Universe can be explained by interstellar dust.

Synopses

Spin-Orbit-Coupled Photons

Spin-Orbit-Coupled Photons

March 25, 2015

Photons confined to a hexagonally shaped microcavity move in a polarization-dependent way, thus simulating a spin-orbit coupling common in materials.

On-Demand Spin-Orbit Coupling

On-Demand Spin-Orbit Coupling

March 24, 2015

Laser-induced spin-orbit coupling in ultracold atoms can be tuned, in contrast to the fixed spin-orbit coupling in materials like topological insulators.

Bubbles Pop, Droplets Don’t

Bubbles Pop, Droplets Don’t

March 19, 2015

A new technique can unambiguously identify nanobubbles living on the surface of a submerged object.

Cold Atoms, Meet Flux Quanta

Cold Atoms, Meet Flux Quanta

March 17, 2015

A cloud of atoms trapped close to a superconducting ring can detect the magnetic field inside the ring with single-quantum sensitivity.

Focus

Acoustic Structure Could Evade Sonar

Acoustic Structure Could Evade Sonar

March 20, 2015

A proposed acoustic version of a material that conducts electricity along its surface could lead to an improved way to hide submarines from sonar.

Catching a Molecule in an Excited State

Catching a Molecule in an Excited State

March 13, 2015

A twist on an established imaging method has detected a molecule’s short-lived, excited state, raising the possibility of movies of chemical reactions.

Notes from the Editors

Snapshots from the 2015 APS March Meeting

Snapshots from the 2015 APS March Meeting

March 19, 2015

Researchers from industry, universities, and major labs gathered at the annual APS March meeting held in San Antonio, Texas. Here’s a selection of this year’s presentations.

Announcements

Celebrating the 2015 International Year of Light

Physics revisits six specific advances in the science and technology of light that were reported in the APS journals.


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