We perform a data-driven dimensionality reduction of the scale-dependent four-point vertex function characterizing the functional renormalization group (FRG) flow for the widely studied two-dimensional $t\text{\ensuremath{-}}{t}^{\ensuremath{'}}$ Hubbard model on the square latti … | Continue reading
A laser-fusion scheme has achieved ignition---an important step on the road to energy production. | Continue reading
Experiments reveal for the first time how a laser illuminating a cloud of ultracold atoms triggers an effective force between the atoms, offering a new way to trap and control ultracold atoms. | Continue reading
Gravitational lensing of the cosmic microwave background has been used to probe the distribution of dark matter around some of the earliest galaxies in the Universe. | Continue reading
The early Universe may have passed through an extended period of matter-dominated expansion following inflation and prior to the onset of radiation domination. Subhorizon density perturbations grow gravitationally during such an epoch, collapsing into bound structures if it lasts … | Continue reading
We propose lattice gauge equivariant convolutional neural networks (L-CNNs) for generic machine learning applications on lattice gauge theoretical problems. At the heart of this network structure is a novel convolutional layer that preserves gauge equivariance while forming arbit … | Continue reading
Studies demonstrate that a formulation of quantum mechanics involving complex rather than real numbers is necessary to reproduce experimental results. | Continue reading
The Parker Solar Probe entered, for the first time, the Sun's magnetic atmosphere, starting to gather data that could help researchers solve some of the greatest mysteries of solar physics. | Continue reading
We explore the prospects for direct detection of dark energy by current and upcoming terrestrial dark matter direct detection experiments. If dark energy is driven by a new light degree of freedom coupled to matter and photons then dark energy quanta are predicted to be produced … | Continue reading
A complex object is a system with internal degrees of freedom, such as a cup of hot coffee hand-held by a human in walking. In spite of the natural ability of humans to handle complex objects, an understanding of how this is accomplished is lacking, yet the issue is fundamental t … | Continue reading
A theoretical analysis suggests that quantum gravity effects might manifest themselves as detectable random fluctuations in the motion of freely falling bodies. | Continue reading
Researchers have made two successive measurements of the same photon as it traveled down an optical fiber. | Continue reading
A miniaturized and industry-compatible quantum computing hardware with cloud capabilities is fabricated; the engine is benchmarked by creating a fully-entangled 24-particle quantum state. | Continue reading
An experiment with a nanoscale clock verifies that a clock's entropy per tick increases as the clock is made more precise. | Continue reading
Classical physics is generally regarded as deterministic, as opposed to quantum mechanics that is considered the first theory to have introduced genuine indeterminism into physics. We challenge this view by arguing that the alleged determinism of classical physics relies on the t … | Continue reading
Roadmap: The integration of diverse physical platforms into functioning quantum networks is discussed, highlighting pathways to accelerate the development of quantum interconnects. | Continue reading
Electron spin waves condense to form an exotic new state that repeats in both space and time. | Continue reading
An experimental demonstration of a source-device-independent optical quantum random number generator---with utility in a broad range of applications---produces in real-time composably secure random numbers at a rate of 8.05 Gb/s, the fastest yet reported. | Continue reading
An experimental demonstration of a source-device-independent optical quantum random number generator---with utility in a broad range of applications---produces in real-time composably secure random numbers at a rate of 8.05 Gb/s, the fastest yet reported. | Continue reading
A prime goal in science is to directly measure the complete three-dimensional (3D) arrangement of atoms in matter. Sampling limitations and the connection between lateral resolution and depth of focus have limited such measurements to the smallest specimens. Here the authors show … | Continue reading
Snap fits are versatile mechanical designs in industrial products that enable the repeated assembling and disassembling of two solid parts. This important property is attributed to a fine balance between geometry, friction, and bending elasticity. In this Letter, we combine theor … | Continue reading
Physical Review Letters | Continue reading
A new method for compression of quantum computing algorithms, based on ZX-calculus, greatly reduces the resources required to realize fault-tolerant quantum circuits. | Continue reading
Controlling magnetism, essential for a wide range of technologies, is impaired by the impossibility of generating a maximum of magnetic field in free space. Here, we propose a strategy based on negative permeability to overcome this stringent limitation. We experimentally demonst … | Continue reading
This paper considers classical music pieces as stochastic trajectories and explores the extent to which these display statistical time irreversibility, i.e. whether a preferential time arrow emerges with an associated entropy production. Since 1/f noise ---a paradigm to explain t … | Continue reading
While astronomers look for a ninth planet to explain orbits in the outer Solar System, a duo explores the possibility that the mystery object is a primordial black hole. | Continue reading
Researchers create diffraction patterns using beams made of large organic molecules, a first step toward creating an interferometer for these systems. | Continue reading
The authors report a striking advance in measuring tiny magnetic fields under ambient conditions, using atom--light-interaction techniques enabled by cutting-edge technology. A prototype sensor detects the magnetic fields generated by the human brain or heart, in a field-deployab … | Continue reading
We present the development of a high-$Q$ monolithic silica pendulum weighing 7 milligram. The measured $Q$ value for the pendulum mode at 2.2 Hz was $2.0\ifmmode\times\else\texttimes\fi{}{10}^{6}$. To the best of our knowledge this is the lowest dissipative milligram-scale mechan … | Continue reading
Theorists have determined ${10}^{\ensuremath{-}33}$ seconds as the upper limit for the period of a universal oscillator, which could help in constructing a quantum theory of gravity. | Continue reading
Artificial neural networks are universal function approximators. They can forecast dynamics, but they may need impractically many neurons to do so, especially if the dynamics is chaotic. We use neural networks that incorporate Hamiltonian dynamics to efficiently learn phase space … | Continue reading
Scattering of light dark matter with sub-eV energy deposition can be detected with collective excitations in condensed matter systems. When dark matter has spin-independent couplings to atoms or ions, it has been shown to efficiently excite phonons. Here we show that, if dark mat … | Continue reading
The authors demonstrate the feasibility of measuring the free neutron lifetime using planetary bodies as a source of neutrons. As the systematics of this new technique are independent of laboratory-based methods this result provides a potential path to resolving the neutron lifet … | Continue reading
String theory provides a microscopic description of the entropy of certain theoretical black holes---an important step toward understanding black hole thermodynamics. | Continue reading
Controlled spin transport in graphene and other two-dimensional materials has become increasingly promising for applications in devices. Of particular interest are custom-tailored heterostructures, known as van der Waals heterostructures, that consist of stacks of two-dimensional … | Continue reading
A technique for analyzing complex networks can predict, with limited time-series data, critical transitions before they occur. Such insight could help model and predict changes in a neuronal network. | Continue reading
An exact solution to the discrete diffusion equation allows for accurate predictions of how the probabilities of reaction diffusion processes evolve over time. | Continue reading
Noise in quantum computing is countered with quantum error correction. Achieving optimal performance will require tailoring codes and decoding algorithms to account for features of realistic noise, such as the common situation where the noise is biased towards dephasing. Here we … | Continue reading
Hydrogen-burning flames can propagate in surprisingly narrow spaces and with little fuel by breaking up into fractal patterns. | Continue reading
Breaking a soap film surrounding an elastic ring causes the ring to buckle. | Continue reading
Femtosecond optical lasers can be used to trigger drastic modifications of a material's physical properties on the ultrafast timescale, revealing complex, otherwise inaccessible quantum mechanics as well as new processes with potential for creating novel devices with unprecedente … | Continue reading
We present a new class of direct detection signals; absorption of fermionic dark matter. We enumerate the operators through dimension six which lead to fermionic absorption, study their direct detection prospects, and summarize additional constraints on their suppression scale. S … | Continue reading
We show that relatively simple integrated photonic circuits have the potential to realize a high fidelity deterministic controlled-phase gate between photonic qubits using bulk optical nonlinearities. The gate is enabled by converting travelling continuous-mode photons into stati … | Continue reading
With the first detection of gravitational waves from a binary system of neutron stars GW170817, a new window was opened to study the properties of matter at and above nuclear-saturation density. Reaching densities a few times that of nuclear matter and temperatures up to 100 MeV, … | Continue reading