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APS journals

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Advancing scientific excellence by publishing influential results in fundamental, applied, and interdisciplinary physics across @apsphysics.bsky.social‬'s journals.

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APS journals @apsjournals.aps.org · 4h ago

A study in PRX Quantum shows that noise can destroy measurement-induced entanglement in 2D circuits, with implications for the classical hardness of simulating noisy quantum computers. Read the study: https://go.aps.org/4wGFpE1

On the top is a depiction of the column-by-column sampling process. After every circuit layer, an on-site noise channel of rate p acts independently on each qubit. Sampling proceeds along the width direction. To sample the t-th column, the researchers include the gates and qubits within its past light cone, shown as a blue region, in the boundary state ρt during the sampling procedure, then measure the t-th column. Below is an illustration of the conjectured entanglement phase diagram of the maximal measurement-induced operator entanglement Smax op , plotted versus noise rate p and depth T. For p = 0, a finite-depth transition at Tc separates volume-law and area-law behavior. For any constant noise rate p > 0, the numerical and analytical analysis indicate area-law scaling of S max op ∼ T /p in the regime T > Tc.

APS journals @apsjournals.aps.org · 10h ago

A study in PRX Life details how a nuclear packing metric that combines static cellular properties, like internuclear spacing and nuclear shape can serve as an accurate indicator of cell jamming and fluidity in cancer. Read the study: https://go.aps.org/45FXHJD

Images of individual heterotypic 10A and TSA-treated 10A spheroids with actin, shown in green, and CellTracker-Orange labeled TSA-treated 10A cells, shown in orange. A spheroid on the left contains 75% 10A cells and 25% TSA-treated 10A cells. A spheroid on the right contains 25% 10A cells and 75% TSA-treated 10A cells. The two images show that as the proportion of TSA-treated 10A cells increases, fusion increases. The scale bar shows 100 micrometers. The inset in each image displays the corresponding fusion of heterotypic 10A/TSA-treated 10A spheroids after 50 hours of fusion. The scale bar in the inset image is 200 micrometers.

APS journals @apsjournals.aps.org · 13h ago

A new study in Physical Review Research details an approach that compares the relative magnitudes of populations and coherences of the density operator to analyze the quantum entanglement of mixed states. Read the paper: https://go.aps.org/4g4oLs6

A scientific schematic split into two sections by a horizontal dashed line. Above the line, an arrow points to the right from text reading symmetries to entanglement behavior. Above the arrow is text that reads CSV condition. Below the line, a red oval sits at the top and is labeled bath. Below the oval and to the left are two parallel blue bars labeled spin. A double sided arrow between the two shapes is labeled Ĥ sys-bath. Below the oval and to the right is a green parabolic curve with horizontal green lines labeled Boson. A double sided arrow between the two shapes is labeled Ĥ sys-bath. A double sided arrow between the spin and the boson is labeled Ĥ spin-boson.

APS journals @apsjournals.aps.org · yesterday

Combining experimental and analytical studies, researchers show how gallium-substituted YIG waveguides that support spin waves with higher group velocities could inform new directions in nanoscale magnonic devices. Read more in Physical Review Applied: https://go.aps.org/4yU8jlt

Panel (a) is a schematic of the measurement system. A blue line represents the laser’s path, which travels from the sample through the TFPI (grey and light blue rectangles) to the photodetector (single grey rectangle). Other components include the time tagger, RF source, and pulse (grey rectangles). Panel (b) shows the configuration displaying the Ga:YIG nanowaveguide (red cuboid) with respect to the external magnetic field, Hext (green arrow), as well as the coplanar waveguide (CPW, flat yellow structure). An inlaid SEM image shows the fabricated nanowaveguide, with a width of 345 nm indicated by white arrows. Panel (c) is a plot of detection frequency on the y-axis versus time on the x-axis, with two broad vertical bands colored different shades of blue. Panel (d) is a graph plotting Brillouin light scattering counts on the y-axis versus time on the x-axis for 9 different functions.

APS journals @apsjournals.aps.org · yesterday

A new series of neural decoders for universal quantum algorithms achieves fast inference and logical error rates while mitigating qubit loss under noise — offering a practical and versatile tool for quantum computing. Learn more in PRX Intelligence: https://go.aps.org/457wY8D

A 20x20 square grid displays a checkerboard pattern, which visualizes the decoder’s performance for cluster states of size 20x20 at a noise strength of p = .01. The grid consists of white squares interspersed with colored squares, representing decoded stabilizer values. The colored squares are labeled according to their value indicated with a color scale legend on the right, ranging from dark purple for the lowest values to bright yellow for the highest. A smaller 10x10 region of squares highlighted with red dashed lines indicates the training region. One orange decoder square is highlighted and connected to an inset graph, which plots noise strength on the x-axis and logical error rate on the y-axis. This graph plots three straight lines corresponding to no suppression (black dashed line), uncorrelated (green solid line), and correlated (blue solid line).

APS journals @apsjournals.aps.org · 2d ago

New work published in Physical Review A develops the first experimental platform for preparing a quasi-2D Bose mixture of ultracold sodium and rubidium atoms, enabling the study of ultracold, low-dimensional phenomena. Read the paper: https://go.aps.org/3TDSkYM

A 3D schematic of the experimental platform. Key components are labeled: ion pumps, composite pumps, magneto-optical trap chamber, rubidium and sodium sources, and the science chamber at the center. An inset shows details of the science chamber, including a microscope and plate electrodes. Another inset shows details of the plate electrodes. The entire device is 1.2 meters by 0.7 meters.

APS journals @apsjournals.aps.org · 2d ago

A study in Physical Review Research compared eight different ways to encode piano pieces using combinations of features like pitch and note duration and found that how music is represented may affect how easy it is to learn. Read the study: https://go.aps.org/4pLOQiO

Eight different network encodings of the Waltz in E-flat major, Op. 18, by Fryderyk Chopin, each with varying numbers of nodes and connections.

APS journals @apsjournals.aps.org · 2d ago

In Physical Review Applied, researchers used a Boltzmann transport approach to derive the spontaneous Nernst coefficient for ferromagnetic metals by treating the transverse current density from Berry curvature as a Fermi-surface property. Read the study: https://go.aps.org/4w3Dqsr

A schematic showing two curves plotted against a horizontal energy axis ε with a downward-pointing blue arrow on the bottom left corner. The maroon curve, labeled 𝒟b, depicts one full wave cycle. The pink curve, labeled ∂ε 𝒟b, also shows a full cycle but is slightly offset and has a broader peak. Three elements are marked along the horizontal axis with vertical dashed lines and open-circle indicators: Fe in red on the left, where the bright pink curve crosses the zero line of the horizontal axis, Co in blue near the positive peak of the pink curve marked with circles on both curves, and Ni in green further to the right near an intersection of the two curves, also marked on both curves.

APS journals @apsjournals.aps.org · 3d ago

By integrating electric bias into foundation-model simulations across chemical space, a field-aware equivariant interatomic potential learns a differentiable electric enthalpy for how materials respond to electric fields. Read the PRX Intelligence paper: https://go.aps.org/4ft9alC

A scientific illustration of an arrangement of charged particles, field lines, and dipole moments between two parallel plates. The plate at the top is red, positively charged, and emits red lines, while the plate at the bottom is teal, negatively charged, and receives teal lines. Between the plates is a square of particles, with four green circles in the corners, orange circles in the center of each edge, and a gray circle in the center. The green circles have downward-pointing black arrows inside and are surrounded by green lines. The orange circles and smaller, have upward-pointing black arrows inside, and are surrounded by orange lines. The large gray sphere in the center has a large upward-pointing black arrow coming from the top and is surrounded by orange lines. An orange diamond connects the four orange circles together and encompasses the gray circle. Dashed green lines connect the four green spheres.

APS journals @apsjournals.aps.org · 3d ago

A study in Physical Review Accelerators and Beams shows how coupled-bunch instabilities can be suppressed over the full 1-3.5 GeV energy range for the Super Tau-Charm Facility using the baseline low-level RF proportional-integral loop. Read the study: https://go.aps.org/4xdTF7g

A graph showing loop-stability screening in the Kp,d plane for 3.5 GeV. Kp is on the x-axis and d (buckets) is on the y-axis. On the right is a color scale bar showing the growth rate with lower rates in blue, medium rates in green, and high rates in yellow. Data points for mode -1 are shown as orange stars, mode -2 as blue triangles, mode +1 as pink squares, and mode -3 as green circles. The white region denotes loop-unstable parameters excluded from analysis. Dashed contours indicate gain margin levels of 0, 3, 6, and 9 dB. The solid contour, labeled with the damping rate in s−1, shows the instability threshold from coupled-bunch analysis.

APS journals @apsjournals.aps.org · 3d ago

In PRX Energy: A multiscale model explores complex ion and fluid dynamics in alkaline water electrolyzers, highlighting the impact of elevated temperature on their physical and electrochemical properties. Read more: https://go.aps.org/4yPu7ic

On the left is a schematic of an alkaline water electrolyzer. It shows aqueous KOH coming up from the bottom of the device. On the left side of the device are water molecules, shown as blue circles. H2 travels to the top of the device and OH- moves to the right through a separator. The OH- is converted into O2, shown as orange circles, and travels to the top of the device. The top of the device shows the flow of electrons. On the right is the simplified model geometry of the electrolyzer used in simulations, showing the cathode and anode both being 2mm wide and 100 mm long with 1mm of space between them.

APS journals @apsjournals.aps.org · 4d ago

Similarity-based representation learning combined with density-based aggregation could be a promising strategy for point cloud segmentation in highly granular particle detectors, according to a new study in PRX Intelligence: https://go.aps.org/4wlRI8C

A dark-background 3D visualization of reconstructed particle data inside a detector volume. Thousands of small colored points—yellow, magenta, orange, and cyan—form several distinct vertical clusters, with each color representing a separate particle reconstructed from its energy deposits in a high-granularity calorimeter. Thin, translucent wireframe boxes indicate selected detector layers surrounding the point clouds, illustrating how a graph neural network groups irregular energy measurements into individual particle objects.

APS journals @apsjournals.aps.org · 4d ago

Can one waveform capture the dynamics of an accelerator subsystem? In Physical Review Accelerators and Beams, researchers demonstrate a kernel-based framework that learns from a single reference waveform, accurately reconstructing system behavior. 🔗 https://go.aps.org/44VGxHP

A two-panel plot. The upper panel shows waveform amplitude versus sample number. A light-blue line labeled “Truth” rises sharply near sample 100, peaks around 1.15, then drops and oscillates near zero. A red line labeled “Prediction” overlaps the blue curve. Black dots labeled “Inputs for Prediction” appear along the rising edge and peak. The lower panel shows a blue line labeled “Loss = Xtruth - Xpred,” fluctuating around zero.

APS journals @apsjournals.aps.org · 4d ago

A new electron ring collimator design for the Electron-Ion Collider employs superconducting final-focus magnets and detectors to mitigate beam loss without impacting machine acceptance or beam lifetime. Read more in Physical Review Accelerators and Beams: https://go.aps.org/4hnmp91

A schematic drawing of the ePIC detector, as well as the 6 o’clock interaction region. The schematic at the top labels each of the detector’s components, including the backward HCAL, forward HCAL, dRICH, pfRICH, hpDIRC, SC Solenoid, and tracking detectors. At the top, a red arrow and a blue arrow denote the hadron beam and electron beam, respectively. The schematic at the bottom labels each of the 6 o’clock interaction region’s components, including the photon beam, luminosity monitor, rear SC Magnets, and Roman Pots. The hadron storage ring and electron storage ring are colored red and blue, respectively.

APS journals @apsjournals.aps.org · 5d ago

In PRX Intelligence, researchers present a message-passing neural network method that enables accurate many-body dispersion calculations and offers a streamlined tool for incorporating van der Waals interactions into molecular simulations. Read the study: https://go.aps.org/4fE8HMl

At the top left, a ball-and-stick molecular model splits into one of two pathways. A green horizontal arrow labeled many-body dispersion machine learning, MBD – ML, points to a large orange box on the far right, while a purple arrow labeled density functional theory, DFT, points downward to a representation of the same molecule enveloped in a translucent blue electron density cloud labeled p(rho). From this cloud, a second purple arrow labeled nonlocal many-body dispersion, MBD – NL, points up to the bottom of the orange box. Inside the orange box are a 3D teal energy landscape plot labeled EMBD-NL and a molecular structure, mapped with pink force vectors on each atom, labeled FMBD-NL.

APS journals @apsjournals.aps.org · 5d ago

Researchers have identified a temperature threshold where thermal fluctuations disrupt cooperative function in mechanical networks modeling protein allostery. They also demonstrated how tuning for thermal stability can improve robustness. More in PRX Life: https://go.aps.org/4xaKdBg

A graph showing the crossover temperature at which thermal fluctuations disrupt cooperative function in mechanical networks. The crossover temperature peaks at intermediate response strengths and increases with thermal-stability tuning.

APS journals @apsjournals.aps.org · 5d ago

A team presents the first quantitative breakdown of reversed-sign phototaxis in algal mutants missing eyespots — marking an important experimental step in the biophysical study of phototaxis and active matter. Read the paper in Physical Review E: https://go.aps.org/3RBncIT

A simple three-dimensional green sphere corresponds to the coordinate system of a Chlamydomonas cell. On the sphere’s equator, a red disc represents the cell’s eyespot. A red line emerges from the eyespot, representing the eyespot normal. A vertical black line running through the sphere represents the axis of rotation around which the cell rotates. A circular blue line denotes this rotation, with other lines colored red representing trans and cis flagella emerging from the cell. Two other black lines emerge horizontally from the sphere’s equator and denote transient axes of rotation arising from the photoresponse of the flagella.

APS journals @apsjournals.aps.org · 6d ago

Using a data-driven linear foundation model, researchers identify a compact variational subspace for quantum embedding — reducing the time needed to solve embedding Hamiltonians without sacrificing computational accuracy. More in PRX Intelligence: https://go.aps.org/4yJQd5R

On the left is an illustration of a projector. Above the projector is a schematic illustration of a ground-state manifold, with green rectangles indicating local regions that correspond to a domain in the Hamiltonian parameter space. On the right is a geometric representation of the ground-state manifold. The curved surface represents the manifold of ground states. The manifold is partitioned into local regions, shown with the same green rectangles as the illustration on the left, that also correspond to a domain in the Hamiltonian parameter space.

APS journals @apsjournals.aps.org · 6d ago

Semimagnetic tin isotopes can exist in different spatial configurations, called shape coexistence. New research models this structure to better understand shape coexistence and how it changes with particle-hole interactions. More in Physical Review C: https://go.aps.org/4xam7qr

A gray box containing a glass oval of lumps of silver-colored tin; two tin marbles; a clear plastic label that says “50” on the right corner, “Sn” in the middle, and “Tin” centered on the bottom; and a green label that says “50” on the top, “Sn” in the middle, and “118.711” centered on the bottom.

APS journals @apsjournals.aps.org · 6d ago

Researchers detail a way to parameterize short-range correlation effects within density-potential-polarization functional theory — enabling a more quantitative way to assess phenomena at electrochemical interfaces. Read the study in Physical Review Applied: https://go.aps.org/4wpLZyF

A graph showing distance from metal surface on the x axis and water polarization on the y axis. Black outlined circles show the oscillating water polarization profiles simulated by ab initio molecular dynamics, abbreviated AIMD, and a blue line showing the profiles from the density–potential–polarization functional theory, abbreviated DPPFT, model. Depictions of water molecules and positively and negatively charged ions are shown in the background.

APS journals @apsjournals.aps.org · 7d ago

Researchers propose a hybrid framework that combines parameterized #quantum circuits with transformer-based neural quantum states to construct variational wavefunctions for quantum many-body systems. Read the paper in PRX Intelligence: https://go.aps.org/3TnrCUd

A schematic showing the workflow of the quantum-enhanced neural networks. On the left is the architecture of the transformer neural network. A gray rectangle labeled residual connection includes the following nodes from bottom to top connected by arrows: layerNorm, masked multi-head attention, layerNorm, and feed forward. Outside of the gray box from bottom to top are layerNorm, linear, and softmax. At the bottom is text reading qubit embedding and position embedding. To the right is a sketch of the feedforward neural network, showing a graph of connected blue nodes. Green arrows from the left are labeled interference, towards the network labeled sampling, and from the network phase. Below is a gray box that shows the parameterized quantum circuit, where the rotation gates are defined as RX(θ) = e−iθX/2 and RZ (θ) = e−iθZ/2, with θ representing the variational parameter to be optimized.

APS journals @apsjournals.aps.org · last wk.

A new study in PRX Life suggests cells can use biochemical signal changes over time to predict its eventual concentration without waiting for it to stabilize. The results help explain how Drosophila embryos make precise cell-fate decisions. 🔗 https://go.aps.org/4fDBkJw

A ventral view of a Drosophila melanogaster embryo, about 22 hours old. The head is on the left side.

APS journals @apsjournals.aps.org · last wk.

New in Physical Review Applied: Researchers introduce a transmon-fluxonium-transmon architecture that eliminates residual ZZ interactions for transmons detuned larger than their anharmonicities and implement the design in a high-fidelity CZ gate. 📄 https://go.aps.org/4fHsVF6

Two graphs plot elapsed time on the x-axis and time in µs on the y-axis for the repeated coherence time measurement of qubit 1 (left) and qubit 2 (right) at zero-ZZ flux bias in device A. On each graph, a series of blue dots represents T1, orange dots represent TR2, and green lines represent TE2, exp.

APS journals @apsjournals.aps.org · last wk.

Using a convolutional neural network, scientists show how to autonomously tune a minimal realization of a Kitaev chain toward a ‘Poor Man’s Majorana’ sweet spot — a key step towards automating quantum hardware control. Read more in PRX Intelligence: https://go.aps.org/4pTYb8n

An illustration of the device set-up. The image depicts a false color scanning electron micrograph of the device and the circuit. An InSb nanowire, shown in green, is contacted by a grounded Al shell, shown in blue, and two normal leads, shown in yellow. The nanowire is placed on bottom gates, shown in red. Both normal leads can be voltage biased independently with respect to the grounded Al.

APS journals @apsjournals.aps.org · last wk.

Researchers in Physical Review Research demonstrate a method that uses just two controls to drive a quantum system toward a target entangled current state. Their method could have broad applications across quantum technologies. Read the study: https://go.aps.org/4wta9sc

A two-by-two grid of four shapes on a black background depicting two pairs of charged beryllium atoms being subjected to ultraviolet laser pulses to boost entanglement. The top left is a blue sphere, the top right is a red sphere, and the shapes in the bottom row are each a pair of slightly offset spheres forming neon green and dark blue crescents at the top right (left) and bottom left (right), respectively, of the left (right) bottom-row shape. The overlapping region of each of these shapes is cyan.

APS journals @apsjournals.aps.org · last wk.

PRX Intelligence’s first papers are here. 🥳 Our newest journal publishes research at the intersection of #AI, #MachineLearning and the physical sciences. Check out the inaugural papers covering molecular simulations, quantum embedding workflows, and more: https://go.aps.org/4xrOQYb

Conceptual illustration of machine learning reconstructing an energy landscape. A projector-like device uses data points from a two-dimensional graph to generate a three-dimensional curved surface, with highlighted regions representing sampled configurations on the landscape.

Diagram illustrating a machine learning workflow for molecular simulations. A molecular structure is transformed into an electron density map using density functional theory (DFT), then processed by machine learning models to generate molecular energy surfaces and force predictions.

Schematic of a hybrid quantum–machine learning architecture. A transformer neural network is connected to a quantum circuit with qubits and logic gates, illustrating an iterative workflow that combines classical AI with quantum computing for optimization.

APS journals @apsjournals.aps.org · last wk.

Using model hydrogels, scientists demonstrate a universal law that governs partitioning of polymer chains into flexible polymer networks, achieving a long-sought but elusive quantitative understanding of linear polymer partitioning. Read more in Physical Review E: https://go.aps.org/4fEh22s

Two diagrams illustrate the cycle-based model for the partitioning of polymer chains into polymer networks. On the left, panel (a) displays a schematic of a polymer network based on elastically effective cycles. The cycles are depicted as red circles on a wider blue background, and are associated with volume elements depicted by dashed blue circles. On the right, panel (b) visualizes steric exclusion around a single cycle, represented as a simple torus with a tube radius of Rg that surrounds the cycle (red line).

APS journals @apsjournals.aps.org · last wk.

A new study in Physical Review E reveals that particles in a strongly confined viscoelastic fluid form chains when a particle-scale Weissenberg number exceeds a critical threshold. “Shuttling" motion promotes collisions and self-organization. 🔗 https://go.aps.org/4bIjQdO

APS journals @apsjournals.aps.org · last wk.

A study in PRX Life shows how raster image correlation spectroscopy offers a nondestructive, fluorescence-based method for probing biomolecular condensate properties in situ that can be accessed on conventional confocal microscopes. Read the study: https://go.aps.org/3RDulIt

On the left is an illustration of length-scale dependent viscosity, with wavy lines depicting a condensate and blue circles as fluorophores. It shows how probe size determines viscosity as movement through the condensate mesh becomes more limited, whereas probes smaller than the mesh size are able to diffuse better. To the right is a graph and series of microscopy images showing the partition coefficients of fluorescently labeled dextrans and raster image correlation spectroscopy labeled dextrans into pLys/pGlu condensates, with fluorescein labeled dextrans having lower partitioning than rhodamine labeled dextrans.

APS journals @apsjournals.aps.org · last wk.

Understanding the limits of perturbative expansion will enable theoretical descriptions of complex quantum systems. A study in Physical Review Research explores its breakdown in 2D systems without appropriate small expansion parameters. Read the paper: https://go.aps.org/4yzM5W5

A visualization of the types of modulations for which cellular dynamical mean-field theory is applicable. The image contains two grids of two-by-two squares. Each square contains an additional two-by-two grid of circles with arrows through them, two light blue circles with downward-pointing arrows, and two red circles with upward-pointing arrows organized in different patterns. The grids represent different magnetic moment alignments of the same cluster.