As AI's energy demands grow due to massive datasets, quantum memory offers a promising solution by processing and storing data more efficiently. Recent research shows that quantum memory can reduce the computational steps needed, cutting both time and energy use. This could make AI more sustainable, as less data would be required to achieve the same results, significantly lowering its energy footprint. While still developing, quantum memory has the potential to reshape data processing and storage across industries.

Quantum theory describes events that take place on extremely short time scales. In the past, such events were regarded as ‘momentary’ or ‘instantaneous’: An electron orbits the nucleus of an atom – in the next moment it is suddenly ripped out by a flash of light. Two particles collide – in the next moment they are suddenly ‘quantum entangled’.Today, however, the temporal development of such almost ‘instantaneous’ effects can be investigated. Together with research teams from China, TU Wien (Vienna) has developed computer simulations that can be used to simulate ultrafast processes. This makes it possible to find out how quantum entanglement arises on a time scale of attoseconds. The results have now been published in the journal ‘Physical Review Letters’.

A research team has proposed a wind sensing lidar theory based on up-conversion quantum interference and successfully developed a prototype. Their work is published in ACS Photonics. The team was led by Prof. Xue Xianghui from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS).

Physicists like to measure things, and they like those measurements to be as precise as possible. That means working at unfathomably small scales, where distances are much smaller than even the diameters of subatomic particles. Researchers also want to measure time down to a precision of less than one second per tens of billions of years. The quest for these ultraprecise measurements in physics is part of a growing field called quantum metrology.

In a Nature Reviews Physics perspective article, researchers overview the latest advances regarding quantum phenomena within attosecond science, which are often overlooked despite their potential to influence experimental and theoretical outcomes.

A recent collaboration between the University of Illinois and the University of Chicago addresses this problem by using the using the environment as a help, instead of a hindrance. In using the environment of superconducting qubits, sometimes referred to as a reservoir, the researchers show that more stable entanglement can be created.

Scientists at Princeton University, led by Bangladeshi researcher M. Zahid Hasan, have marked a significant milestone in quantum physics. This achievement, documented in the Nature Physics journal on 20 February, showcases the observation of long-range quantum coherence at relatively high temperatures. This advancement is crucial for the development of next-generation technologies, including super-fast computers and ultra-secure communication networks, which until now have been hindered by the need for extremely low temperatures to achieve this state.

Xiaoqian Chen, a physicist and beamline scientist at the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy (DOE) Office of Science User Facility at DOE’s Brookhaven National Laboratory, has been selected as one of the 91 early career scientists from across the country to receive research funding through the DOE Office of Science’s Early Career Research Program. This funding will aid Chen in researching the unique ways that particles interact to share information due to quantum mechanics.

In an article published today in Nature, the ATLAS collaboration reports how it succeeded in observing quantum entanglement at the LHC for the first time, between fundamental particles called top quarks and at the highest energies yet. First reported by ATLAS in September 2023 and since confirmed by two observations made by the CMS collaboration, this result has opened up a new perspective on the complex world of quantum physics.

Quantum Optics Jena (QOJ), a pioneering startup in the field of quantum technology, today announced the closing of an €8.5 million Series A funding round. This investment underscores the growing confidence in German quantum technology and its potential to revolutionize secure data transmission.