Quantum correlations, foundations & formalism is a research area in quantum information theory and quantum foundations that studies nonclassical statistical correlations between quantum systems and the mathematical structures underpinning them. It encompasses entanglement, Bell nonlocality, steering, and contextuality, and analyzes their characterization via correlation sets, operator algebras, tensor product structures, resource theories, and generalized probabilistic frameworks. The field investigates axiomatic reconstructions of quantum theory, relationships between different nonclassical correlations, and constraints imposed by causality, information principles, and symmetry. It also explores operational and device-independent formulations, linking foundational questions to cryptography, communication complexity, and many-body physics.
From mobile phones and banking systems to aircraft, ships and emergency services, much of modern life relies on precise timing signals from satellites. Known as the Global Navigation Satellite System (GNSS), satellites carrying ...
Optics & Photonics
Jul 7, 2026
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32
Werner Heisenberg's famous uncertainty principle describes one of the most intriguing features of quantum physics: certain pairs of physical quantities describing a particle, such as position and momentum, cannot simultaneously ...
Optics & Photonics
Jul 3, 2026
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430
Quantum properties of light are extremely delicate. When researchers attempt to measure them, even small losses on the way to a detector can make them invisible, limiting their use outside carefully controlled environments. ...
Optics & Photonics
Jul 2, 2026
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13
Hawking radiation is a form of radiation emitted by black holes, as theoretically predicted by Stephen Hawking. It suggests that black holes do not merely swallow matter—as had previously been assumed—but also emit very faint ...
General Physics
Jul 2, 2026
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89
In a new study published in Nature Physics, researchers have demonstrated the Hong–Ou–Mandel (HOM) effect with up to 12 indistinguishable neutral atoms—an effect that has been predominantly observed in photonic systems.
In quantum mechanics, the geometry of quantum states has emerged as a powerful framework for understanding phenomena ranging from electrical conductivity to superconductivity. One research direction aims to extend these geometric ...
General Physics
Jun 27, 2026
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317
Physicists from Heinrich Heine University Düsseldorf (HHU) have examined a fundamental property of quantum mechanics in collaboration with the German Aerospace Center (DLR). In an article published in the journal Physical ...
Quantum Physics
Jun 21, 2026
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219
Scientists studying particle collisions at the Relativistic Heavy Ion Collider (RHIC) usually capture what happens when atomic nuclei smash into one another at nearly the speed of light. But even when the nuclei don't collide, ...
General Physics
Jun 17, 2026
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40
A University of Birmingham scientist has built a "mini-universe" that takes a step toward answering one of science's biggest questions: "What is time?" Publishing his findings in Physical Review Research, Professor Giovanni ...
General Physics
Jun 12, 2026
12
1922
In a quest to build the most accurate quantum sensors in the world, scientists are constantly improving their performance, making them more precise, more stable and more reliable. But eventually, physical constraints will ...
Quantum Physics
Jun 11, 2026
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40
