Scientists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory and collaborators have a new way to use data from high-energy particle smashups to peer inside protons. Their approach uses quantum information science to map out how particle tracks streaming from electron-proton collisions are influenced by quantum entanglement inside the proton.

Recently, a team led by the Laboratoire d’Optique Appliquée (CNRS), in collaboration with ICREA Professor at ICFO Jens Biegert and other multiple institutions (Institut für Quantenoptik - Leibniz Universität Hannover, Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Friedrich-Schiller-University Jena), demonstrated the quantum optical properties of high-harmonic generation in semiconductors. The results, appearing in Physical Review X Quantum, align with the previous theoretical predictions about HHG.

A research team led by Professor Jaedong Lee from the Department of Chemical Physics of DGIST (President Kunwoo Lee) has introduced a novel quantum state and a pioneering mechanism for extracting and controlling quantum information using exciton and Floquet states. Collaborating with Professor Noejung Park from UNIST’s Department of Physics (President Chongrae Park), the team has, for the first time, demonstrated the formation and synthesis process of exciton and Floquet states, which arise from light-matter interactions in two-dimensional semiconductors. This study captures quantum information in real-time as it unfolds through entanglement, offering valuable insights into the exciton formation process in these materials, thereby advancing quantum information technology.

In classical physics, complex systems eventually reach equilibrium (if you wait long enough, the ice always melts). However, certain quantum many-body systems defy this norm. For them, thermalization does not occur, and the system remains out of equilibrium. That is the case of a large class of strongly disordered systems —where features like particle interactions or individual energies exhibit a certain degree of randomness. This behavior is due to many-body localization (MBL), a mechanism that preserves the system’s initial conditions over time.

The material, based on a framework of ruthenium, fulfils the requirements of the ‘Kitaev quantum spin liquid state’ - an elusive phenomenon that scientists have been trying to understand for decades. Published in Nature Communications the study, by scientists at the University of Birmingham, offers an important step towards achieving and controlling quantum materials with sought-after new properties that do not follow classical laws of physics.

A group of South Korean researchers has successfully developed an integrated quantum circuit chip using photons (light particles). This achievement is expected to enhance the global competitiveness of the team in quantum computation research. Electronics and Telecommunications Research Institute (ETRI) announced that they have developed a system capable of controlling eight photons using a photonic integrated-circuit chip. With this system, they can explore various quantum phenomena, such as multipartite entanglement resulting from the interaction of the photons.

IonQ, a leader in the quantum computing and networking industries, today announced its participation in SuperCompute 24 (SC24), taking place November 17-22 in Atlanta. SuperCompute, one of the largest international high-performance computing (HPC) events, gathers leading experts across HPC and adjacent research fields to showcase the latest developments and research in computing. This year, a dedicated quantum track and pavilion will be featured in the exhibit hall, spotlighting advancements in quantum computing. IonQ will be offering a preview of some of its newest innovations in hybrid quantum-classical computing, built to enable the development and deployment of quantum-accelerated commercial applications, including the IonQ Hybrid Services suite.

For a wide variety of emerging quantum technologies, such as secure quantum communications and quantum computing, quantum entanglement is a prerequisite. Scientists at the Max-Planck-Institute for the Science of Light (MPL) have now demonstrated a particularly efficient way in which photons can be entangled with acoustic phonons. The researchers were able to demonstrate that this entanglement is resilient to external noise, the usual pitfall of any quantum technology to date. They published their research in Physical Review Letters.

Nu Quantum, the quantum entanglement startup, is today announcing that Roland Acra has joined as a Board Advisor.

Now, those researchers have determined why they were able to trounce the quantum computer at its own game. Their answer, presented on October 29 in Physical Review Letters, reveals that the quantum problem they tackled — involving a particular two-dimensional quantum system of flipping magnets — displays a behavior known as confinement. This behavior had previously been seen in quantum condensed matter physics only in one-dimensional systems.