Researchers at the Department of Energy’s Oak Ridge National Laboratory joined forces with EPB of Chattanooga and the University of Tennessee at Chattanooga to demonstrate the first transmission of an entangled quantum signal using multiple wavelength channels and automatic polarization stabilization over a commercial network with no downtime.

MIT physicists developed a technique to arrange atoms in much closer proximity than previously possible, down to 50 nanometers. The group plans to use the method to manipulate atoms into configurations that could generate the first purely magnetic quantum gate — a key building block for a new type of quantum computer.

Researchers at Deutsche Telekom Innovation Laboratories (T-Labs), together with the quantum networking company Qunnect (US & NL), have reached a milestone on the path to the quantum internet: demonstration of sustained, high fidelity (99%) transmission of entangled photons across 30 kilometers of commercially deployed fiber for 17 days.

The research team led by Professor Chang-Hee Cho from the Department of Physics and Chemistry at DGIST (President Kunwoo Lee) has successfully fine-tuned the Rabi oscillation of polaritons, quantum composite particles, by leveraging changes in electrical properties induced by crystal structure transformation. This study demonstrates that the properties of quantum particles can be controlled without the need for complex external devices, which is expected to greatly enhance the feasibility of practical quantum technology.

Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS), in collaboration with Stanford University and the University of California – Berkeley, have developed an on-chip twisted moiré photonic crystal sensor that uses MEMS technology to control the gap and angle between the crystal layers in real time. The sensor can detect and collect detailed polarization and wavelength information simultaneously.

A team of researchers from U of T Engineering has discovered hidden multi-dimensional side channels in existing quantum communication protocols.

Now, researchers in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) are doubling down, literally, on metasurface technology by creating a bilayer metasurface, made of not one, but two stacked layers of titanium dioxide nanostructures. Under a microscope, the new device looks like a dense array of stepped skyscrapers.

ICFO researchers, in an international collaboration, have used terahertz light to explore exotic phenomena within magic-angle twisted bilayer graphene. This approach reveals previously unseen behaviors and provides direct insights into the quantum geometry of electronic wavefunctions —the fundamental framework underlying these phenomena.

Advancing scalable solid-state quantum computing from materials to quantum processors and simulators—this is the ambitious project goal of the joint European project SPINUS. During their annual meeting, which took place in February in Trento, Italy, the project partners gathered to assess their latest scientific achievements and to align on strategic objectives for the upcoming project phases. During two days of intensive discussions, including a quantum technologies networking session with external participants, the consortium showcased decisive milestones and lived up to SPINUS’ role in advancing European quantum research.

A new study from the University of Eastern Finland (UEF) explores the behavior of photons, the elementary particles of light, as they encounter boundaries where material properties change rapidly over time. This research uncovers remarkable quantum optical phenomena which may enhance quantum technology and paves the road for an exciting nascent field: four-dimensional quantum optics.