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Quantum

Contemplating a Quantum Future

Last week, Caltech's Institute for Quantum Information and Matter (IQIM) honored the legacy and contributions of theoretical physicist Richard Feynman, marking 50 years since he received the...
quantum

A new quantum approach to big data

System for handling massive digital datasets could make impossibly complex problems solvable.
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Bismuth-based nanoribbons show ‘topological’ transport, potential for new technologies

Researchers have created nanoribbons of an emerging class of materials called topological insulators and used a magnetic field to control their semiconductor properties, a...
quantum

Quantum algorithm shown to be more efficient than any classical equivalent

Quantum computing could cease being a dream and become a reality within the next ten years. Quantum computers will drastically reduce processing time because...
time

Proof of time’s arrow at the atomic level

The universe in which we live has two fundamental and immutable properties: the arrow of time and increasing entropy. These features are so inherent...
quantum computer

3Q: Scott Aaronson on Google’s new quantum-computing paper

In 2010, a Canadian company called D-Wave announced that it had begun production of what it called the world’s first commercial quantum computer, which...

Q&A: SLAC Theorist Lance Dixon Explains Quantum Gravity

Our world is ruled by four fundamental forces: the gravitational pull of massive objects, the electromagnetic interaction between electric charges, the strong nuclear interaction...

Discovery of classic pi formula a ‘cunning piece of magic’

While most people associate the mathematical constant π (pi) with arcs and circles, mathematicians are accustomed to seeing it in a variety of fields....

Observing the Unobservable: Researchers Measure Electron Orbitals of Molecules in 3D

Many of you will remember them from your physics lessons at school: often represented as colourful clouds or balloons, electron orbitals provide information on...

Team announces breakthrough observation of Mott transition in a superconductor

An international team of researchers, including the MESA+ Institute for Nanotechnology at the University of Twente in the Netherlands and the U.S. Department of...

Scientists “squeeze” light one particle at a time

A team of scientists has successfully measured particles of light being “squeezed”, in an experiment that had been written off in physics textbooks as...

Seeing Quantum Motion

Consider the pendulum of a grandfather clock. If you forget to wind it, you will eventually find the pendulum at rest, unmoving. However, this...

Quantum computing advance locates neutral atoms

For any computer, being able to manipulate information is essential, but for quantum computing, singling out one data location without influencing any of the...

Physicists close in on world’s most sensitive resonators

Mukund Vengalattore, left, Yogesh Patil and Laura Chang '15 in the Ultracold Atomic Physics Lab in Clark Hall, where they conducted their experiments. In their...

When Electrons Cooperate

Remaining uncertainties in the century-plus effort to explain superconductivity and advance its applications has a University of Illinois team of physicists using advanced computing...

3D Potential Through Laser Annihilation

Whether in the pages of H.G. Wells, the serial adventures of Flash Gordon, or that epic science fiction saga that is Star Wars, the...

Quantum sensor’s advantages survive entanglement breakdown

The extraordinary promise of quantum information processing — solving problems that classical computers can’t, perfectly secure communication — depends on a phenomenon called “entanglement,”...

In the quantum world, the future affects the past

We’re so used to murder mysteries that we don’t even notice how mystery authors play with time. Typically the murder occurs well before the...

Scientists set quantum speed limit

University of California, Berkeley, scientists have proved a fundamental relationship between energy and time that sets a “quantum speed limit” on processes ranging from...

String field theory could be the foundation of quantum mechanics

Physicists have long sought to unite quantum mechanics and general relativity, and to explain why both work in their respective domains. First proposed in the 1970s, string theory resolved inconsistencies of quantum gravity and suggested that the fundamental unit of matter was a tiny string, not a point, and that the only possible interactions of matter are strings either joining or splitting.