Browse Physics

Electrons join the growing technology to build integrated quantum circuits that guide matter waves on a chip.

Quick detection of photogenerated electrons in a quantum dot may lead to a better method to transfer quantum information between optical and electrical media.

Researchers develop a new type of superconducting quantum interference device (SQUID) with significantly enhanced sensitivity and bandwidth, which can function as a general-purpose magnetic sensor.

A line defect that seems to naturally form in graphene grown on a nickel substrate may provide additional control of transport characteristics.

Mercury telluride—a semimetal in bulk—shows signs of becoming a topological insulator under strain.

Optical spectroscopy in quantum dots finds new ways to explore an old many-body problem.

Electrons confined to a layer floating above liquid helium move in an orderly way through a constriction because their repulsion forces them to keep their distance from one another.

Strain can be used to shift the resonant frequency of electron spin to the point where quantum processing starts looking feasible.

Two objects made of the exotic materials known as topological insulators could repel one another through the quantum-mechanical forces that cause most other solids to attract, theorists predict.

A new topological insulator that approaches true insulating behavior in the bulk is synthesized.

A theoretical paper suggests that quantum entanglement between macroscopic objects could be accomplished at temperatures much higher than previously thought.

Reciprocal space holds the key to stripe-domain ubiquity.

Ensembles of dilute spin impurities in condensed matter systems can be accessed using microelectronic circuits and therefore may offer a way for long-term storage and enhanced processing of quantum information.

Theorists and experimentalists have long been trying to explain the existence of a fractional quantum Hall effect where it is not expected.

Photoemission measurements challenge the picture that the electronic states on the surface of the topological insulator Bi2Se3 form a perfect Dirac cone.

The first experimental observation of Landau levels in the surface states of a three-dimensional topological insulator confirms the levels obey unconventional quantization rules.

The exactly quantized magneto-optical response of a topological insulator is a direct result of the Berry phase protected states on its surface.

The phase coherence time of electrons in certain nanostructures may diverge at very low temperatures.

Theory that takes into account the time-dependent nature of electronic transport through a quantum dot reveals fluctuations that could affect rapid switching of nanoscale electronic devices.

Noise goes hand in hand with how electrons tunnel through a single-electron transistor.