Two independent studies push semiconductor qubits towards practical scales
Semiconductor spin qubits are one of the most promising building blocks for future quantum computers, but turning them into a working, large-scale quantum computer has so far proven difficult.…
For now, two big questions remain open: how to connect qubits that are…
Diamond's newfound defect may tame vibrations that hinder quantum light sources
Researchers in the Department of Electrical and Computer Engineering at the University of Illinois Urbana-Champaign have discovered a new type of quantum light emitter in diamonds that could help overcome a number of challenges facing quantum technologies.
IBM and researchers from the University of Chicago announced a demonstration in quantum computing that meets the fundamental criteria for "quantum advantage"—the point where quantum computers can be confirmed to have outperformed classical computers on trusted computations.
Quantum fluid reveals hidden states that can be switched with a magnetic field
Bose-Einstein condensates (BECs) are often described as a "fifth state of matter": a quantum state in which many particles lose their individual identities and behave as one collective object.…
For more than 60 years, researchers have sought to create such condens…
This has been difficult to realize in controllable semiconductor devic…
Molecular orbitals imaged in 3D, opening path to femtosecond videos
One of the most famous and intriguing results of quantum mechanics is the finding that fundamental particles, such as electrons, cannot be pinned down to one single location.…
Instead, a particle is described by its "wavefunction," which allows r…
In particular, the electron wavefunctions within a molecule, known as …
For example, they show how it may absorb light or how a chemical react…
Air-stable, ultrathin superconductors developed for more scalable quantum devices
Super-thin superconducting materials, which are only one or a few atoms thick, have unique properties scientists can leverage to produce more compact, scalable, and efficient quantum devices.…
But these fragile materials degrade so rapidly in air that they are di…
X(2370) emerges as glueball-dominated particle in collider experiments
At the International Conference on High Energy Physics in Brazil, the BESIII Collaboration report that, after 15 years of sustained research, it identified the dominant constituent of the X(2370) as a pseudoscalar glueball with spin-parity quantum numbers of 0⁻⁺.
Two-qubit entangling gate flags its own errors as detectable photon losses
Quantum errors are a normal part of quantum computing because fragile physical qubits (the tiny components storing data) can easily break down because of environmental noise, like heat, stray signals or microscopic vibrations.…
Typical fixes involve vast amounts of extra hardware qubits, which mak…
New quantum microscopy trick quadruples microscope resolution
Three years after a team of Caltech scientists showed that pairs of entangled photons could double the resolution of a light microscope, the same lab has figured out a way to double down on that improvement.…
They have now achieved a fourfold resolution boost compared to a class…
Crossing into a mirror world: Particles turn to wisps of fog, and the magnetic monopole paradox dissolves
In Goethe's ballad "Erlkönig," immortalized in Schubert's fevered 1815 setting, a dying boy riding through the night sees a spectral king beckoning from the darkness.…
His father calms him: "Mein Sohn, es ist ein Nebelstreif"—my son, it i…
In the poem, the father's reassurance proves tragically wrong.
In the quantum world, however, his words acquire an uncanny new meaning.
Discovery of 'slow' electrons in 2D material could lead to new memory device
Over the last decade, researchers have developed two-dimensional materials with fascinating quantum effects that could be harnessed for next-generation technologies.
New optical method reveals internal dynamics of elusive Wigner crystals
Researchers at the University of Basel and the Technical University of Munich have developed a new method to reveal the collective motion of electrons in one of the most elusive states of matter: the Wigner crystal.…
Using light, the physicists were able to uncover previously inaccessib…
When certain atoms are irradiated with laser light, they can produce a very different kind of laser light: laser pulses with extremely high frequencies in the X-ray range.…
These laser pulses, which helped achieve record-breaking results at TU…
New CERN measurement challenges conventional models of how gluons behave inside atomic nuclei
A University of Kansas physicist played a leading role in a CERN study showing that two rival explanations for how gluons behave inside atomic nuclei can now be experimentally distinguished.