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Insider Brief Brazilian researchers sent one photon from each twin pair 7 kilometers across Guanabara Bay while detecting the other at the source. The experiment recorded 7,000 coincident detections in five seconds despite atmospheric turbulence and other sources of signal loss. Researchers have not yet confirmed that entanglement survived the journey and plan to test the photons’ polarization next. Image: Experimental setup at UFF, in Niterói, from where photons are sent towards [...]

Insider Brief Researchers observed unusual quantum oscillations in the topological insulator ZrTe₅ that persist beyond the quantum limit under extreme magnetic fields and near-zero temperatures. The study attributes the behavior to reentrant Landau levels caused by the interplay of electron spin, orbital motion and strong spin-orbit coupling rather than many-body interactions. The findings suggest that previously reported differences in ZrTe₅ oscillations may arise from the same [...]

Insider Brief Brazilian researchers show that extending engineered quantum dot chains transforms fragile Majorana states into robust, topologically protected regions, potentially easing the path to practical quantum computing. Simulations indicate that increasing chain length expands narrow “sweet spots” into stable “topological islands,” where Majorana states persist even under significant disorder and parameter variation. The findings suggest longer chains reduce qubit [...]

Rice University researchers have developed a new technique to produce ultrathin, high-purity diamond films for advanced technologies by eliminating the need for high-temperature annealing in the lift-off process. Instead of heating, the method uses diamond overgrowth to convert a buried damage layer into a graphite-like seam, allowing clean separation of the diamond layer while preserving the substrate for reuse. The resulting diamond films are electronic-grade quality and could [...]

Insider Brief: The Albert Einstein Jewish Brazilian Hospital in São Paulo launched a quantum computing research initiative to support drug development, genomics, and disease diagnosis. Led by UNESP professor Felipe Fanchini, the project includes collaboration with the startup QuaTI, which is also applying quantum computing to climate-related disaster prediction. Researchers developed a rainfall data station in São Carlos and plan to use hybrid [...]

Insider Brief Nanodiamonds with color centers have been embedded in custom-designed structures to integrate these quantum emitters into photonic devices. University of São Paulo’s São Carlos Institute of Physics (IFSC-USP) researchers have established a method for this. Applications include quantum information encoding and processing, and cell marking in biological studies. PRESS RELEASE — A nitrogen-vacancy (NV) center is a defect in the crystal [...]