### Popper's experiment realized again—but what does it mean?

(Phys.org)—Like Einstein, the philosopher Karl Popper was a realist who was deeply bothered by some of the odd implications of quantum mechanics. Both Popper and Einstein disliked the idea in Heisenberg's ...

### Best of Last Week – Setting a quantum speed limit, slowing the speed of light and turning back the aging clock

### 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 quantum computing and tunneling to ...

### Discovery of uncertainty relations beyond the Heisenberg

In the quantum world, the famous Heisenberg uncertainty principle bounds the product of the variances of two incompatible observables such as the position and the momentum of a particle by the Planck constant. Heisenberg, ...

### Best of Last Week – Quantum physics got less complicated, the pseudogap and ibuprofen as an anti-aging drug

### Quantum physics just got less complicated

Here's a nice surprise: quantum physics is less complicated than we thought. An international team of researchers has proved that two peculiar features of the quantum world previously considered distinct ...

### 'Compressive sensing' provides new approach to measuring a quantum system

(Phys.org) —In quantum physics, momentum and position are an example of conjugate variables. This means they are connected by Heisenberg's Uncertainty Principle, which says that both quantities cannot be ...

### Tricking the uncertainty principle

(Phys.org) —Caltech researchers have found a way to make measurements that go beyond the limits imposed by quantum physics.

### Proving uncertainty: First rigorous formulation supporting Heisenberg's famous 1927 principle

Nearly 90 years after Werner Heisenberg pioneered his uncertainty principle, a group of researchers from three countries has provided substantial new insight into this fundamental tenet of quantum physics ...

### A bound on the natural width of the Higgs boson

CMS has improved the constraints on the Higgs width, a fundamental property of this unique new particle, by more than two orders of magnitude.

### Physicists propose explanation for metals behaving badly

(Phys.org) —One of the defining properties of metals is that, the hotter the metal, the worse it conducts electricity. But while most metals obey this inverse relationship between temperature and conductivity ...

### Researchers use squeezed light to enhance photonic force microscopy

(Phys.org) —A team of researchers working in Australia has used "squeezed light" to enhance the sharpness of images produced using photonic force microscopy. In their paper published in Physical Review Le ...

### Researchers use quantum entanglement to improve differential interference contrast microscopy

(Phys.org)—A team of researchers with members from Hokkaido and Osaka Universities in Japan has used quantum entanglement of photons to improve image results created using differential interference contrast ...

### Research team challenges the limits of famous quantum principle

(Phys.org) —A team of physicists is challenging the very limits of Heisenberg's famous uncertainty principle by measuring quantum particles with unprecedented accuracy.