In the past, events that took place in a flash were considered instantaneous. Yet modern experiments show that even when particles seem to shift in the blink of an eye, as with quantum entanglement, there are measurable intervals involved.
These findings spark questions about how electrons leave atoms or how entangled pairs form, opening avenues for precise control in various applications.
Scientists are diving into the deep sea to study one of the universe’s biggest mysteries—quantum gravity.
Using KM3NeT, a vast underwater neutrino telescope, researchers are watching ghost-like particles that may hold the key to uniting the physics of the very large and the very small. By analyzing how neutrinos oscillate—or don’t—during their journey through space, they’re searching for subtle signs of decoherence, a possible effect of quantum gravity.
A tiny particle and a big physics puzzle.
If quantum computers are to fulfill the promise of solving problems faster or which are too complex for classical supercomputers, then quantum information needs to be communicated between multiple processors.
Modern computers have different interconnected components such as a memory chip, a Central Processing Unit and a General Processing Unit. These need to communicate for a computer to function.
Current attempts to interconnect superconducting quantum processors use “point-to-point” connectivity. This means they require a series of transfers between nodes, compounding errors.
Deep ultraviolet (DUV) lasers, known for their high photon energy and short wavelengths, are essential in various fields such as semiconductor lithography, high-resolution spectroscopy, precision material processing, and quantum technology. These lasers offer increased coherence and reduced power consumption compared to excimer or gas discharge lasers, enabling the development of more compact systems.
As reported in Advanced Photonics Nexus, researchers from the Chinese Academy of Sciences have made a significant advancement by developing a compact, solid-state laser system capable of generating 193-nm coherent light.
This wavelength is crucial for photolithography, a process used to etch intricate patterns onto silicon wafers, forming the backbone of modern electronic devices.
For the first time, scientists have directly measured the cross-section of a weak r-process nuclear reaction using a radioactive ion beam. Specifically, the team studied the reaction 94Sr(α, n)97Zr, where a radioactive isotope of strontium (strontium-94) absorbs an alpha particle (a helium nucleus), emits a neutron, and becomes zirconium-97.
The findings have been published as an Editors’ Suggestion in Physical Review Letters
<em> Physical Review Letters (PRL)</em> is a prestigious peer-reviewed scientific journal published by the American Physical Society. Launched in 1958, it is renowned for its swift publication of short reports on significant fundamental research in all fields of physics. PRL serves as a venue for researchers to quickly share groundbreaking and innovative findings that can potentially shift or enhance understanding in areas such as particle physics, quantum mechanics, relativity, and condensed matter physics. The journal is highly regarded in the scientific community for its rigorous peer review process and its focus on high-impact papers that often provide foundational insights within the field of physics.
Quantum technologies operate by leveraging various quantum mechanical effects, including entanglement. Entanglement occurs when two or more particles share correlated states even if they are distant.
When two particles are spin entangled, the intrinsic angular momentum (i.e., spin) of one particle can influence that of its entangled partner. This would suggest that the energy of the second particle can be altered via a nonlocal correlation, without enabling faster-than-light communication.
Researchers at Shanghai Jiao Tong University and Hefei National Laboratory recently carried out a study aimed at testing this theoretical prediction experimentally using two quantum memories.