NEWS - QUANTUM TECH

Although quantum technology holds great promise for enabling faster computing, more secure communication and new types of sensing, different quantum systems often don’t interact well with each other. To address this, engineers have developed platforms based on a type of phonon known as a surface acoustic wave. However, the limited propagation distance due to high loss and inherently open 2D structure of existing solutions make such devices relatively large, posing a barrier t

Optical micrograph of the monolayer tungsten diselenide sample, with the right-hand side functionalized with PTCDA. @ Mark...

Detection of time-bin superpositions with the temporal Talbot carpet. @ Maciej Ogrodnik, University of Warsaw In the era of instant data...

Quantum computers will need large numbers of qubits to tackle challenging problems in physics, chemistry, and beyond. Unlike classical bits, qubits can exist in two states at once—a phenomenon called superposition. This quirk of quantum physics gives quantum computers the potential to perform certain complex calculations better than their classical counterparts, but it also means the qubits are fragile. To compensate, researchers are building quantum computers with extra, red

In a world-first, researchers from the Femtosecond Spectroscopy Unit at the Okinawa Institute of Science and Technology (OIST) have directly observed the evolution of the elusive dark excitons in atomically thin materials, laying the foundation for new breakthroughs in both classical and quantum information technologies. Their findings have been published in Nature Communications. Professor Keshav Dani, head of the unit, highlights the significance: "Dark excitons have great

Researchers have successfully used “hard X-rays”—a form of very short-wave radiation—to collectively excite the atomic nuclei of the iron isotope 57Fe. This recent accomplishment, conducted at the PETRA III research facility, is a notable development as such a process was previously limited to long-wave radiation. The experiments focused on iron-57 (57Fe), an isotope found in about two percent of natural iron, by transferring its atomic nuclei from their ground state to a hig

With NSF support, WashU physicists create quantum sensors that track stress and magnetism at pressures exceeding 30,000 times Earth’s atmosphere

Seeing a trio of entangled photons in one go

Unlike conventional phases of matter, the so-called non-equilibrium quantum phases are defined by their dynamical and time-evolving properties — a behavior that cannot be captured by traditional equilibrium thermodynamics. One particularly rich class of non-equilibrium states arises in Floquet systems — quantum systems that are periodically driven in time. This rhythmic driving can give rise to entirely new forms of order that cannot exist under any equilibrium conditions, re

Researchers at The City College of New York have shown how a quantum emitter, the nitrogen-vacancy (NV) center in diamond, interacts in unexpected ways with a specially engineered photonic structure when moved around with a scanning tip. The study, led by Carlos A. Meriles, Martin and Michele Cohen Professor of Physics in the Division of Science and entitled “Emission of Nitrogen–Vacancy Centres in Diamond Shaped by Topological Photonic Waveguide Modes,” appears in the journa

Researchers from Delft University of Technology in The Netherlands have been able to see the magnetic nucleus of an atom switch back and forth in real time. They read out the nuclear ‘spin’ via the electrons in the same atom through the needle of a scanning tunneling microscope. To their surprise, the spin remained stable for several seconds, offering prospects for enhanced control of the magnetic nucleus. The research, published in Nature Communications, is a step forward fo

Nearly a decade after they first demonstrated that soft materials could guide the formation of superconductors, Cornell researchers have achieved a one-step, 3D printing method that produces superconductors with record properties. The advance, detailed Aug. 19 in Nature Communications, builds on years of interdisciplinary work led by Ulrich Wiesner, the Spencer T. Olin Professor in the Department of Materials Science and Engineering, and could improve technologies such as