A major result in quantum mechanics has been achieved: for the first time, the temporal evolution of a quantum system has been manipulated through interaction with light pulses in the extreme ultraviolet (XUV). This achievement has been obtained by a team of researchers coordinated by Prof. Lukas Bruder from the University of Freiburg, in collaboration with 14 international institutes, including the Politecnico di Milano, the Institute of Photonics and Nanotechnologies of the National Research Council of Milan (CNR-IFN), the Institute of Materials Workshop of the National Research Council of Trieste (CNR-IOM), the National Institute for Nuclear Physics (INFN), the National Laboratories of Frascati (Rome), and the Elettra Synchrotron in Trieste.

In a cold-atom Fermi Hubbard model, researchers observed extended and attractive correlations between hole dopants and indications of stripes that are associated with superconductivity, opening up novel insights into the behaviour of exotic quantum phases.

A research group led by Prof. SHENG Zhigao from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, recently discovered the disappearance of nonreciprocal second harmonic generation (SHG) in MnPSe3 when integrated into a two-dimensional (2D) antiferromagnetic MnPSe3/graphene heterojunction.

It is often difficult to find out which equations determine a particular quantum system. Normally, one first has to make theoretical assumptions and then conduct experiments to check whether these assumptions prove correct. Strikingly, researchers at the University of Innsbruck, opens an external URL in a new window, the Institute of Quantum Optics and Quantum Information, opens an external URL in a new window (IQOQI) and TU Wien (Vienna) have now jointly achieved an important step in this field: they have developed a method that allows them to read directly from the experiment which physical theory effectively describes the behaviour of the quantum system. This now allows for a new kind of quality control: it is possible to directly check whether the quantum simulator actually does what it is supposed to simulate. This should enable quantitative statements to be made about quantum systems that cannot be investigated directly.

Now, engineers at the University of Pennsylvania School of Engineering and Applied Science (Penn Engineering) have utilized quantum sensors to realize a groundbreaking variation of nuclear quadrupolar resonance (NQR) spectroscopy, a technique traditionally used to detect drugs and explosives or analyze pharmaceuticals.

Recently, a research team led by Prof. LI Chuanfeng from the University of Science and Technology of China (USTC) achieved a breakthrough in quantum photonics. They developed an on-chip photonic simulator capable of simulating arbitrary-range coupled frequency lattices with gauge potential. This study was published in Physical Review Letters.

In quantum technology applications such as quantum computing, light plays a central role in encoding and transmitting information. NTU researchers have recently made breakthroughs in manipulating light that could potentially usher in the era of quantum computing.

NYU and Caltech scientists develop innovative mathematical approach to back existence of long-held framework explaining all physical reality.

Since the CMS and ATLAS experiments announced the discovery of the Higgs boson in 2012, they have been measuring its mass and interaction with other particles with ever-increasing precision. Now, researchers are setting their sights on the Higgs boson’s interaction with itself, which could provide physicists with clues to the stability of the Universe. To do this, physicists search for a much rarer phenomenon than the production of one Higgs boson: the production of Higgs boson pairs, known as di-Higgs. In a new study, using data from high-energy proton–proton collisions in Run 2 of the Large Hadron Collider (LHC), the CMS experiment has released its latest search for di-Higgs production and provided constraints on their production rate.

A team of researchers from the University of Cologne, Hasselt University (Belgium) and the University of St Andrews (Scotland) has succeeded in using the quantum mechanical principle of strong light-matter coupling for a groundbreaking optical technology that overcomes the long-standing problem of angular dependence in optical systems. The study ‘Breaking the angular dispersion limit in thin film optics by ultra-strong light-matter coupling’ published in Nature Communications presents ultra-stable thin-film polariton filters that open new avenues in photonics, sensor technology, optical imaging and display technology. The study at the University of Cologne was led by Professor Dr Malte Gather, director of the Humboldt Centre for Nano- and Biophotonics at the Department of Chemistry and Biochemistry of the Faculty of Mathematics and Natural Sciences.