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Quantum interference experiment imaged with an electron microscope. The use of bilayer graphene enabled scientists to control the trajectory (red) of an anyon in the material. Its wave was made to encircle an island containing a magnetic field and other anyons (green), then recombine with the original wave to study its properties. Electric gates (dark gray) allowed the scientists to route the anyons along defined paths in the material and to control the electron density within the island.

Weizmann Institute scientists find new evidence for a particle system that “remembers” its previous quantum states

In the future, quantum computers are anticipated to solve problems once thought unsolvable, from predicting the course of chemical reactions to producing highly reliable weather forecasts. For now, however, they remain extremely sensitive to environmental disturbances and prone to information loss. A new study from the lab of Dr. Yuval Ronen at the Weizmann Institute of Science, published today in Nature, presents fresh evidence for the existence of non-Abelian anyons – exoti

Quantum Tech

2 days ago5 min read

A Clear Signal Emerging from Quantum Noise

Surprising signals can arise from the coupling of light particles.

Quantum Tech

5 days ago4 min read

Sketch of the interferometric set-up for light under the influence of a gravitational wave.

Laser light and the quantum nature of gravity

When two black holes merge or two neutron stars collide, gravitational waves can be generated. They spread at the speed of light and cause tiny distortions in space-time. Albert Einstein predicted their existence, and the first direct experimental observation dates from 2015. Now, Prof. Ralf Schützhold, theoretical physicist at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), is going one step further. He has conceived an experiment through which gravitational waves can not o

Quantum Tech

Dec 17, 20253 min read

Large masses – such as a galaxy – curve space-time. Objects move along a geodesic. If we take into account that space-time itself has quantum properties, deviations arise (dashed line vs. solid line).

A new approach links quantum physics and gravitation

It is something like the “Holy Grail” of physics: unifying particle physics and gravitation. The world of tiny particles is described extremely well by quantum theory, while the world of gravitation is captured by Einstein’s general theory of relativity. But combining the two has not yet worked – the two leading theories of theoretical physics still do not quite fit together. There are many ideas for such a unification – with names like string theory, loop quantum gravity, ca

Quantum Tech

Dec 3, 20255 min read

Researchers led by Princeton's Nathalie de Leon have developed a new quantum sensing technique based on entangled point defects in lab-grown diamonds, enabling measurement of phenomena that are beyond the reach of today's best equipment. The sensor provides a new lens for studying condensed matter physics.

Diamond defects, now in pairs, reveal hidden fluctuations in the quantum world

Princeton researchers have developed a diamond-based quantum sensor that reveals rich new information about magnetic phenomena at this minute scale. The technique uncovers fluctuations that are beyond the reach of existing instruments and provides key insight into materials such as graphene and superconductors. Superconductors have enabled today’s most advanced medical imaging tools and form the basis of hoped-for technologies like lossless powerlines and levitating trains. T

Quantum Tech

Nov 27, 20255 min read

Inducing long-range interactions in one-dimensional quantum systems: Coupling ground‑state atoms (shown as red‑fluorescing dots) to highly excited Rydberg states with laser light creates controllable, switchable long‑range interactions, as illustrated on the right. Researchers at the Max Planck Institute of Quantum Optics have further refined this technique, achieving system lifetimes that are more than a hundred times longer than in earlier experiments. These advances open the door to studying exotic binding mechanisms and to building a new class of quantum simulators.

Binding atoms via long-range repulsion

A research team from the Max Planck Institute of Quantum Optics succeeded in realising tuneable long-range interactions between atoms. In their study, published in Science, the scientists were able to increase the system’s lifetime by more than a factor of 100 compared to previous experiments. This allows to study the effect of long-range interactions on a microscopic level in tunnel-coupled quantum systems. Notably, the team experimentally observed an unusual binding mechani

Quantum Tech

Nov 25, 20254 min read

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