quantum-physics

Nature Communications, Published online: 05 May 2026; doi:10.1038/s41467-026-72651-x Recently, there has been growing interest in realizing quantum heat engines using superconducting circuits. Here the authors demonstrate a cyclic quantum heat engine based on superconducting circuits, showing controlled heating, cooling, and positive work extraction, with measured power and efficiency in agreemen…

Scientists at the University of Oxford have achieved something never done before in quantum physics: they created a new type of interaction called “quadsqueezing.” This breakthrough could open new doors for quantum computing, ultra-sensitive measurements, and advanced simulations of complex systems. To understand why this matters, it helps to start with a simple idea. Many […] The post Scientists…

Physicists at the University of Oxford have accomplished a landmark achievement in quantum science, demonstrating for the first time a fourth-order quantum effect known as "quadsqueezing". The breakthrough, detailed in Nature Physics on May 1, was achieved using a single trapped ion confined between electrode structures and manipulated with precisely calibrated laser fields. Remarkably, the Oxfor…

Sergio L. Cacciatori, Bianca Cerchiai, Alessio Marrani, Squaring the Magic [arXiv:1208.6153] Sergio L. Cacciatori, Bianca Cerchiai, Alessio Marrani, Magic coset decompositions, Adv. Theor. Math. Phys. 17 5 (2013) 1077-1128 [doi:10.4310/ATMP.2013.v17.n5.a4] On generalizations of exceptional structures, including E8, octonions and the exceptional Jordan algebra: On 12-dimensional supergravity, D=14…

algebraic quantum field theory (perturbative, on curved spacetimes, homotopical) quantum mechanical system, quantum probability interacting field quantization For classes of gauge theories, such as (super) Yang-Mills theory or Chern-Simons theory or various matrix models, whose gauge groups may be square matrices for any natural number , notably in the special unitary group , the special orthogon…

Introducing discussion of D=2 Yang-Mills theory: Early discussion of flux tubes/Wilson lines as effective strings in Yang-Mills theory (Gauge/String duality): “So the world sheet of string should be interpreted as the color magnetic dipole sheet. The string itself should be interpreted as the electric flux tube in the monopole plasma.” On the large-N limit of QCD: Alexander A. Migdal, Loop equati…

A new quantum physics study reveals that simply changing a magnetic field over time can unlock entirely new forms of matter that don’t exist under normal conditions. By carefully “driving” materials with timed magnetic shifts, researchers created exotic quantum states that could be far more stable and resistant to errors—one of the biggest challenges in quantum computing. This breakthrough sugges…

The Expedition 74 crew kicked off the week setting up advanced radio frequency technology, configuring quantum physics hardware, and conducting ultrasound vein scans aboard the International Space Station. The crewmates also prepared for the arrival of the next U.S. cargo mission, unpacked the latest Roscosmos resupply ship, and checked out a spacesuit. The post Crew Works Advanced Radio Frequenc…

A new study links the universe’s expansion to quantum topology, suggesting that hidden mathematical structures may stabilize the cosmological constant in ways previously unrecognized. The cosmological constant is a term physicists use to describe the energy pushing the universe to expand faster over time. Despite its simple definition, it represents one of the deepest unsolved [...]

Nature Communications, Published online: 04 May 2026; doi:10.1038/s41467-026-72686-0 In quantum information processing, distilling pure quantum states from noisy ones in the practical one-shot setting imposes a high overhead. Here, Fang and Liu propose a one-shot distillation scheme that exploits catalysis to arbitrarily reduce distillation overhead, and apply this to magic state distillation to …

I want to know if one specific structural argument holds. Take a spin-1 system or NV centre ground-state triplet as a three-level observer T in C³, entangle it with N probe qubits. Joint space is C³ ⊗ (C²)^⊗N, dimension 3·2^N. The joint state I prepare is: |Ψ⟩ = (1/√3) Σᵢ |rᵢ⟩_T ⊗ |φᵢ⟩_P... Read more

This paper begins with an experimentally verified observational fact: Earth time is not synchronized with satellite time (gravitational time dilation versus motion-induced time dilation). By investigating the mechanisms underlying this phenomenon, this paper proposes an ontological framework based on minimal assumptions: the sole fundamental entity is the discrete, indivisible time quantum, denot…

Magnons are tiny waves in magnetisation and ideal building blocks for hybrid quantum systems and quantum metrology. However, their previously too-short lifetime of at most a few hundred nanoseconds has been a hurdle. An international team of physicists led by Andrii Chumak from the University of Vienna has now succeeded in extending this lifetime a hundredfold to up to 18 microseconds - paving th…

_Https://Doi.Org/10.5281/Zenodo.20022636_. 2026This paper presents a universal framework for evaluating structural stability as a measure of system viability across domains. Rather than introducing new physical mechanisms, it provides a non-interfering interpretive layer applied to the outputs of existing theories. Any system that produces structure—whether in electromagnetic propagation, quantum…

Muu9 - 351 - 249 - TL;DR - "This article discusses incorrect statements appearing in textbooks on quantum field theory (QFT); some of these mistakes also appear in the research literature. The focus is not on errors made by an individual author, but on conceptual muddledness that is widespread in introductory textbooks."

The search for a theory of everything has been framed as a unification problem: find one framework that reconciles quantum mechanics and general relativity. This paper argues it should be framed as a compression problem. Under algorithmic probability, the correct theory of everything is the shortest description that reproduces all observation. The Standard Model plus general relativity requires a…

We challenge the common view that relativity and quantum formalisms compel a static block-universe ontology. Instead, we show that Existential Realism (ER) – can be formulated as an ontological extension of the specific physical models studied here, leaving empirical predictions unchanged so long as the added ER structure remains empirically idle. First, we clarify that the mathematical formalism…

Interview of Mikhail Shifman by David Zierler on July 7, 2021, Niels Bohr Library & Archives, American Institute of Physics, College Park, MD USA [aip:oral-histories/47523] On the Chern-Simons level renormalization (shift by the dual Coxeter number): On superalgebra, supergeometry, supersymmetry, supergravity and superstrings: Mikhail Shifman (ed.) Yuri Golfand memorial volume World Scientific, 2…

On conformal boundaries in the AdS/CFT correspondence: On glueballs via holographic QCD: On the quark-gluon plasma via holographic QCD: On black holes in anti-de Sitter spacetime in relation to topological charges and holographic QCD: