Quantum Physics

Researchers at the University of Chicago have developed a straightforward method to produce complex entangled quantum states using basic adjustments in optical cavity systems. The approach relies on existing laboratory tools and could advance quantum sensing applications. Their findings appear in a recent issue of Physical Review X.

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An international team has uncovered a complex network of topological electronic states inside cobalt that remain stable at room temperature. The finding challenges decades of assumptions about the well-studied metal and points to potential uses in spintronics and quantum technologies.

Researchers at the University of Oxford have achieved the first-ever demonstration of quadsqueezing, a fourth-order quantum effect, using a single trapped ion. The breakthrough, published on May 1 in Nature Physics, introduces a novel method to engineer complex quantum interactions. This advance could enhance quantum simulation, sensing, and computing.

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An international team of researchers has achieved a milestone in quantum communication by teleporting the polarization state of a single photon between two separate quantum dots over a 270-meter open-air link. The experiment, conducted at Sapienza University of Rome, demonstrates the potential for quantum relays in future quantum networks. The findings were published in Nature Communications.