Lifeboat Foundation

Conversely, stimulated Raman spectroscopy represents a modern analytical method used to study molecular vibrational properties and interactions, offering valuable insights into molecular fine structure. Its applications span various domains, including chemical analysis, biomedical research, materials science, and environmental monitoring.

By combining these two techniques, an exceptionally powerful analytical tool for studying complex molecular materials emerges.

In a new paper published in Light: Science & Applications, a team of scientists, led by Professor Zhedong Zhang and Professor Zhe-Yu Ou from Department of Physics, City University of Hong Kong, Hong Kong, China, developed a microscopic theory for the ultrafast stimulated Raman spectroscopy with quantum-light fields.

Researchers at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and several collaborating institutions have successfully demonstrated an innovative approach to find breakthrough materials for quantum applications. The study is published in the journal Nature Communications.

An international team of physicists, centered at Trinity, has proven new theorems in quantum mechanics that describe the “energy landscapes” of collections of quantum particles.

For decades, scientists have been studying a group of unusual materials called multiferroics that could be useful for a range of applications including computer memory, chemical sensors and quantum computers.

Samuele Ferracin^1,2, Akel Hashim^3,4, Jean-Loup Ville³, Ravi Naik^3,4, Arnaud Carignan-Dugas¹, Hammam Qassim¹, Alexis Morvan^3,4, David I. Santiago^3,4, Irfan Siddiqi^3,4,5, and Joel J. Wallman^1,2

¹Keysight Technologies Canada, Kanata, ON K2K 2W5, Canada ² Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada ³ Quantum Nanoelectronics Laboratory, Dept. of Physics, University of California at Berkeley, Berkeley, CA 94,720, USA ⁴ Applied Math and Computational Research Division, Lawrence Berkeley National Lab, Berkeley, CA 94,720, USA ⁵ Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA 94,720, USA

Continue reading “Efficiently improving the performance of noisy quantum computers” »

Pablo viñas martínez, esperanza lópez, and alejandro bermudez.

Instituto de Física Teórica, UAM-CSIC, Universidad Autónoma de Madrid, Cantoblanco, 28,049 Madrid, Spain.

Get full text pdfRead on arXiv VanityComment on Fermat’s library.

Researchers at the University of Michigan have found a way to examine tiny structures, such as bacteria and genes, with reduced damage compared to traditional light sources.

The new technique involves spectroscopy, which is the study of how matter absorbs and emits light and other forms of radiation, and it takes advantage of quantum mechanics to study the structure and dynamics of molecules in ways that are not possible using conventional light sources.

“This research examined a quantum light spectroscopy technique called entangled two-photon absorption (ETPA) that takes advantage of entanglement to reveal the structures of molecules and how ETPA acts at ultrafast speeds to determine properties that cannot be seen with classical spectroscopy,” said study senior author Theodore Goodson, U-M professor of chemistry and of macromolecular science and engineering.

Physicists at the University of Stuttgart under the leadership of Prof. Sebastian Loth are developing quantum microscopy which enables them for the first time to record the movement of electrons at the atomic level with both extremely high spatial and temporal resolution.

A new paper explores the quantum Griffith singularity in phase transitions, focusing on recent studies that could expand our understanding of high-temperature superconductivity in unconventional materials.

Exploring exotic quantum phase transitions has long been a key focus in condensed matter physics. A critical phenomenon in a phase transition is determined entirely by its universality class, which is governed by spatial and/or order parameters and remains independent of microscopic details. Quantum phase transitions, a subset of phase transitions, occur due to quantum fluctuations and are tuned by specific system parameters at the zero-temperature limit.

The superconductor-insulator/metal phase transition is a classic example of quantum phase transition, which has been intensely studied for more than 40 years. Disorder is considered one of the most important influencing factors, and therefore has received widespread attention. During the phase transitions, the system usually satisfies scaling invariance, so the universality class will be characterized by a single critical exponent. In contrast, the peculiarity of quantum Griffith singularity is that it breaks the traditional scaling invariance, where exotic physics emerges.