Quantum Mechanics

Levels of spacetime emergence in quantum gravity - Philsci-Archive

Oriti, Daniele (2018) <i>Levels of spacetime emergence in quantum gravity.</i> [Preprint]<p>Preview<p>Text<br>LevelsEmergenceQG.pdf <br>Download (177kB) | …

Philosophy of Science

Why the Universe Only Needs One Electron

According to renowned physicist Richard Feynman (recounted during his 1965 Nobel lecture)…<p>“I received a telephone call one day at the graduate …

Quantum Physics

Quantum Computing For Computer Scientists

Quantum computing is coming, so a lot of people are trying to articulate why we want it and how it works. Most of the explanations are either …

Quantum Computing

Quantum information measures for restricted sets of observables

Author(s): Sudip Ghosh and Suvrat RajuWe study measures of quantum information when the space spanned by the set of accessible observables is not …

Quantum Physics

Quantum corrections of work statistics in closed quantum systems

Author(s): Zhaoyu Fei, H. T. Quan, and Fei LiuWe investigate quantum corrections to the classical work characteristic function (CF) as a …

Quantum Physics

Unitarity of loop diagrams for the ghostlike $1/(k^2-M_1^2)-1/(k^2-M_2^2)$ propagator

Author(s): Philip D. MannheimWith fourth-order derivative theories leading to propagators of the generic ghost-like $1/(k^2-M_1^2)-1/(k^2-M_2^2)$ …

Quantum Physics

Separability-entanglement classifier via machine learning

Author(s): Sirui Lu, Shilin Huang, Keren Li, Jun Li, Jianxin Chen, Dawei Lu, Zhengfeng Ji, Yi Shen, Duanlu Zhou, and Bei ZengThe problem of …

Machine Learning

Capacity of a continuously distributed quantum network

Author(s): Xiang-Zhen Zhou, Xu-Tao Yu, and Zai-Chen ZhangThis paper investigates the capacity of a continuously distributed quantum network. A …

Quantum Physics

From unextendible product bases to genuinely entangled subspaces

Author(s): Maciej Demianowicz and Remigiusz AugusiakUnextendible product bases (UPBs) are interesting mathematical objects arising in composite …

Quantum Physics

Symplectic realization of electric charge in fields of monopole distributions

Author(s): Vladislav G. Kupriyanov and Richard J. SzaboWe construct a symplectic realisation of the twisted Poisson structure on the phase space of …

Quantum Physics

Quantum measurements could power a tiny, hyperefficient engine

You can’t measure an atom without disturbing it, at least according to quantum mechanics. This effect may seem like a nuisance, but it could power a …

Physics

Explaining the almost-real quantum science of Ant-Man and the Wasp

"Do you guys just put the word 'quantum' in front of everything?"<p>– Scott Lang, <i>Ant-Man</i> <i>and</i> <i>the Wasp</i><p>My first exposure to the word "quantum," like many …

Entertainment

Path integral approach to heat in quantum thermodynamics

Author(s): Ken Funo and H. T. QuanWe study the heat statistics of a quantum Brownian motion described by the Caldeira-Leggett model. By using the …

Quantum Physics

Quantum phase space trajectories with application to quantum cosmology

Author(s): Przemysław Małkiewicz, Artur Miroszewski, and Hervé BergeronWe develop an approach to quantum dynamics based on quantum phase space …

Quantum Physics

Activation of nonmonogamous multipartite quantum states

Author(s): Saptarshi Roy, Tamoghna Das, Asutosh Kumar, Aditi Sen(De), and Ujjwal SenThe monogamy relation for quantum correlations is not satisfied …

Quantum Physics

'Ant-Man' science adviser explains the real-life physics behind the film

The quantum physicist says Superman may be powerful, but he wouldn't stand a chance against Ant-Man.<p>You may think that a movie about a superhero who can shrink down to the size of an ant doesn’t have much basis in reality, but according to Spyridon Michalakis, a quantum physicist at the California …

Quantum Physics

High-fidelity quantum secret sharing prevents eavesdropping

Quantum secret-sharing scheme for noisy environments<p>To protect the confidentiality of a message during its transmission, people encrypt it. However, …

Quantum Computing

Security updates for Wednesday

Security updates have been issued by <b>Debian</b> (cups), <b>Oracle</b> (kernel and qemu-kvm), <b>Red Hat</b> (ansible, kernel, kernel-rt, and qemu-kvm), <b>Scientific Linux</b> …

Red Hat

Is this our first clue to a world beyond quantum theory?

NATURE gives rise to weird and wonderful things: dancing plants, sailing stones, flamingos. But no one, except perhaps on a hallucinogenic trip, has …

Quantum Physics

Realistic Area-Law Bound on Entanglement from Exponentially Decaying Correlations

Abstract<p>A remarkable feature of typical ground states of strongly correlated many-body systems is that the entanglement entropy is not an extensive …

Quantum Physics

Characteristic length scales from entanglement dynamics in electric-field-driven tight-binding chains

Author(s): Devendra Singh Bhakuni and Auditya SharmaWe study entanglement dynamics in the nearest-neighbor fermionic chain that is subjected to both …

Quantum Physics

Quantum Yang-Mills theory: An overview of a program

Author(s): Ashley Milsted and Tobias J. OsborneWe present an overview of a program to understand the low-energy physics of quantum Yang-Mills theory …

Quantum Physics

Fracton topological order from the Higgs and partial-confinement mechanisms of rank-two gauge theory

Author(s): Han Ma, Michael Hermele, and Xie ChenFractons are gapped pointlike excitations in d=3 topological ordered phases whose motion is …

Mathematics

Subsystem symmetry protected topological order

Author(s): Yizhi You, Trithep Devakul, F. J. Burnell, and S. L. SondhiIn this work, we introduce a new type of topological order that is protected by …

Mathematics

Avengers 4: Is The Quantum Realm The Key To Beating Thanos?

Let's face it: More than any act of heroism pulled off by Scott Lang or Hope Van Dyne, the real question about Ant-Man & The Wasp was always going to be how it relates back to Avengers: Infinity War. It's not that we don't love size-changing slapstick comedy and good natured family fun every now …

Marvel Universe

How an infrastructure team starts using CI/CD

Most operations shops are well down the road to highly automated configuration and provisioning systems. Sometimes this transformation is part of a …

DevOps

What Does A Quantum Explosion Look Like?

No one knows–because neither the human eye or brain is equipped to see it. That’s where art comes in.<p>There’s an invisible world that operates all around us, but we can’t see it. It’s a world composed of particles smaller than an atom, like protons, neutrons, and electrons. The way in which it …

Physics

The Video Game Creating Quantum Physics Breakthroughs

It’s a new, incredibly powerful tool for quantum physics. And it’s tucked away inside the brains of video gamers.<p>A team of Danish physicists led by …

Physics

Photonic quantum technology for quantum computing, data protection and fundamental quantum science

The Quantum Information Science and Quantum Computation group at the University of Vienna, Austria, uses single quanta of light to explore …

Quantum Physics

18-qubit entanglement sets new record

Physicists have experimentally demonstrated 18-qubit entanglement, which is the largest entangled state achieved so far with individual control of …

Quantum Physics