Quantum Computing Archives

THE SIMPLE INTERFEROMETER USED IN THE QUANTUM CHESHIRE CAT SCENARIO, WHERE A PHOTON IS PREPARED IN THE PATH-POLARISATION ENTANGLED STATE ECC, BUT IS ONLY CONSIDERED IF IT ARRIVES ON OUTPUT PATH + WITH POLARISATION D. THE PARADOX ARISES WHEN WE CONSIDER THE PHOTON’S PATH, POLARISATION, AND PATH-POLARISATION CORRELATION, WHILE IT IS INSIDE THE INTERFEROMETER.

Quantum particles can’t separate from their properties, after all

Researchers create first functional semiconductor made from graphene

Laser setup for cooling, controlling, and entangling individual molecules. Photo by Richard Soden, Department of Physics

Physicists ‘entangle’ individual molecules for the first time

While errors are normally hard to spot in quantum devices, researchers have shown that, with careful control, some errors can cause atoms to glow. Researchers used this capability to execute a quantum simulation using an array of atoms and a laser beam, as shown in this artist's concept. The experiment showed that they could discard the glowing, erroneous atoms and make the quantum simulation run more efficiently.

A new way to erase quantum computer errors

The race is on for a new internet

Formed within wells indented into the stack of two different layered materials, a monolayer semiconductor and an anti-ferromagnetic crystal, the chiral quantum light emissions rise up out of the material and could be used for quantum information and communication applications.

New quantum device generates single photons and encodes information

In one design of the new superconducting device, the diode consists of a ferromagnetic strip (pink) atop a superconducting thin film (grey). The team also identified the key factors behind the resulting current that travels in only one direction with no resistance. Credits:Image courtesy of A. Varambally, Y-S. Hou, and H. Chi.

Simple superconducting device could dramatically cut energy use in computing

Quantum Computers Embrace Quantum Mechanics

$This artistic depiction shows electron fractionalization — in which strongly interacting charges can “fractionalize” into three parts — in the fractional quantum anomalous Hall phase.$

Quantum Computing

Quantum particles can’t separate from their properties, after all

Researchers create first functional semiconductor made from graphene

Physicists ‘entangle’ individual molecules for the first time

A new way to erase quantum computer errors

The race is on for a new internet

New quantum device generates single photons and encodes information

Simple superconducting device could dramatically cut energy use in computing

Quantum Computers Embrace Quantum Mechanics

Researchers make a quantum computing leap with a magnetic twist

New Method Uses Sound Waves for Storing Quantum Information

Quantum random number generator operates securely and independently of source devices

Google spots unusual memory behavior of anyon particles

Experiment translates quantum information between technologies

Quantum breakthrough paves way for world-first experimental wormhole