Featured
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Article |
Connecting shear flow and vortex array instabilities in annular atomic superfluids
Two adjacent layers flowing at different velocities in the same fluid are subject to flow instabilities. This phenomenon is now studied in atomic superfluids, revealing that quantized vortices act as both sources and probes of the unstable flow.
- D. Hernández-Rajkov
- , N. Grani
- & G. Roati
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Article |
Search for decoherence from quantum gravity with atmospheric neutrinos
Interactions of atmospheric neutrinos with quantum-gravity-induced fluctuations of the metric of spacetime would lead to decoherence. The IceCube Collaboration constrains such interactions with atmospheric neutrinos.
- R. Abbasi
- , M. Ackermann
- & M. Zimmerman
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News & Views |
Protons on the line
Stable regions in four-dimensional phase space have been observed by following the motion of accelerated proton beams subject to nonlinear forces. This provides insights into the physics of dynamical systems and may lead to improved accelerator designs.
- Giulio Stancari
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Article
| Open AccessObservation of fixed lines induced by a nonlinear resonance in the CERN Super Proton Synchrotron
Nonlinear resonances can cause particle loss in accelerators. Experiments confirm that a coupled nonlinear resonance traps beam particles on a four-dimensional closed curve. This finding allows the development of mitigation strategies.
- H. Bartosik
- , G. Franchetti
- & F. Schmidt
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Article |
Melting of the charge density wave by generation of pairs of topological defects in UTe2
A mechanism for the phase transition of charge density wave states via the generation and proliferation of topological defects with opposite phase windings is demonstrated in a heavy-fermion superconductor.
- Anuva Aishwarya
- , Julian May-Mann
- & Vidya Madhavan
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Article |
Flexoelectricity-driven toroidal polar topology in liquid-matter helielectrics
Exploring and exploiting electric dipole arrangements analogously to what is possible with magnetic spin textures is an emerging prospect. Now a spontaneous toroidal polar topology is observed in ferroelectric liquid crystals.
- Jidan Yang
- , Yu Zou
- & Satoshi Aya
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Comment |
A physics curriculum for the modern world
Increasingly, physics graduates take jobs outside academia. Active teaching approaches lead to deeper conceptual understanding and a more varied skill set and are therefore more likely to prepare students for successful careers.
- Jenaro Guisasola
- & Kristina Zuza
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Comment |
Computing in physics education
Computing is central to the enterprise of physics but few undergraduate physics courses include it in their curricula. Here we discuss why and how to integrate computing into physics education.
- Marcos D. Caballero
- & Tor Ole B. Odden
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Comment |
Racial equity in physics education research
Injustices and oppression are pervasive in society, including education. An intersectional, equity-oriented approach can help remove systemic obstacles and improve the experience of marginalized people in physics education through decolonial and critical race lenses.
- Geraldine L. Cochran
- , Simone Hyater-Adams
- & Ramón S. Barthelemy
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Perspective |
Epistemic agency as a critical mediator of physics learning
Encouraging students to take ownership of their learning can improve their outcomes. This Perspective discusses ways to achieve this in the context of physics education and how digital technology can help Gen Z students in particular.
- Nam-Hwa Kang
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Review Article |
Towards meaningful diversity, equity and inclusion in physics learning environments
Women and ethnic and racial minority students are underrepresented in physics. This Review summarizes research on equity and inclusion in physics education and makes recommendations for making physics learning environments more equitable.
- Alexandru Maries
- & Chandralekha Singh
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Article |
Manipulation of chiral interface states in a moiré quantum anomalous Hall insulator
The local electronic structure of interface states between topologically distinct domains is imaged and controlled, allowing visualization of the interplay between strong interactions and non-trivial topology.
- Canxun Zhang
- , Tiancong Zhu
- & Michael F. Crommie
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Article |
Superconducting stripes induced by ferromagnetic proximity in an oxide heterostructure
Copper-based and iron-based compounds exhibit an interplay between magnetism and superconductivity. Now, this idea is extended to two-dimensional oxide heterostructures, where a spatially varying superconducting order is demonstrated at the EuO/KTaO3 interface.
- Xiangyu Hua
- , Zimeng Zeng
- & Xianhui Chen
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Article
| Open AccessDemonstration and imaging of cryogenic magneto-thermoelectric cooling in a van der Waals semimetal
Cooling efficiency in thermoelectric devices decreases considerably at lower temperatures. Now thermoelectric cooling at cryogenic temperatures is directly imaged in a van der Waals semimetal.
- T. Völkl
- , A. Aharon-Steinberg
- & E. Zeldov
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News & Views |
Terahertz magnon algebra
Excitation of magnons — quanta of spin-waves — in an antiferromagnet can be used for high-speed data processing. The addition and subtraction of two such modes opens up possibilities for magnon-based information transfer in the terahertz spectral region.
- Brijesh Singh Mehra
- & Dhanvir Singh Rana
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News & Views |
Efficient learning of many-body systems
The Hamiltonian describing a quantum many-body system can be learned using measurements in thermal equilibrium. Now, a learning algorithm applicable to many natural systems has been found that requires exponentially fewer measurements than existing methods.
- Sitan Chen
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Article |
Protecting entanglement between logical qubits via quantum error correction
Despite being essential to many applications in quantum science, entanglement can be easily disrupted by decoherence. A protocol based on repetitive quantum error correction now demonstrates enhanced coherence times of entangled logical qubits.
- Weizhou Cai
- , Xianghao Mu
- & Luyan Sun
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Article |
Learning quantum Hamiltonians from high-temperature Gibbs states and real-time evolutions
Complexity of learning Hamiltonians from Gibbs states is an important issue for both many-body physics and machine learning. The optimal sample and time complexities of quantum Hamiltonian learning for high temperature has now been proven.
- Jeongwan Haah
- , Robin Kothari
- & Ewin Tang
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Perspective |
Drug design on quantum computers
Quantum computers promise to efficiently predict the structure and behaviour of molecules. This Perspective explores how this could overcome existing challenges in computational drug discovery.
- Raffaele Santagati
- , Alan Aspuru-Guzik
- & Clemens Utschig-Utschig
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Article |
Observation of spin polarons in a frustrated moiré Hubbard system
Spin polarons, bound states of a doped carrier and a spin flip excitation, are observed in a transition metal moiré bilayer.
- Zui Tao
- , Wenjin Zhao
- & Kin Fai Mak
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Article
| Open AccessCavity-mediated long-range interactions in levitated optomechanics
Combining multiparticle levitation with cavity control enables cavity-mediated interaction between levitated nanoparticles, whose strength can be tailored via optical detuning and position of the two particles.
- Jayadev Vijayan
- , Johannes Piotrowski
- & Lukas Novotny
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Article
| Open AccessGraph states of atomic ensembles engineered by photon-mediated entanglement
Photon-mediated entanglement in atomic ensembles coupled to cavities enables the engineering of quantum states with a graph-like entanglement structure. This offers potential advantages in quantum computation and metrology.
- Eric S. Cooper
- , Philipp Kunkel
- & Monika Schleier-Smith
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Article |
Nonclassical near-field dynamics of surface plasmons
Most applications of surface plasmons are based on their near-field properties. These properties are now shown to be governed by nonclassical scattering between multiparticle plasmonic subsystems.
- Mingyuan Hong
- , Riley B. Dawkins
- & Omar S. Magaña-Loaiza
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Article |
Deterministic generation of multidimensional photonic cluster states with a single quantum emitter
Cluster states made from multiple photons with a special entanglement structure are a useful resource for quantum technologies. Two-dimensional cluster states of microwave photons have now been deterministically generated using a superconducting circuit.
- Vinicius S. Ferreira
- , Gihwan Kim
- & Oskar Painter
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News & Views |
Metal poles around the bend
Electric dipoles are common in insulators, but extremely rare in metals. This situation may be about to change, thanks to flexoelectricity.
- Gustau Catalan
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Article |
Quantized topological pumping in Floquet synthetic dimensions with a driven dissipative photonic molecule
Although dissipation is often detrimental to the observation of topological effects, a photonic molecule driven at several incommensurate frequencies is shown to be a candidate system for quantized topological transport in synthetic dimensions.
- Sashank Kaushik Sridhar
- , Sayan Ghosh
- & Avik Dutt
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World View |
Artificial intelligence needs a scientific method-driven reset
AI needs to develop more solid assumptions, falsifiable hypotheses, and rigorous experimentation.
- Luís A. Nunes Amaral
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Article |
Non-classical microwave–optical photon pair generation with a chip-scale transducer
A transducer that generates microwave–optical photon pairs is demonstrated. This could provide an interface between optical communication networks and superconducting quantum devices that operate at microwave frequencies.
- Srujan Meesala
- , Steven Wood
- & Oskar Painter
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Article |
Attosecond metrology of the two-dimensional charge distribution in molecules
Attosecond interferometry measurements of photoionization delays in planar carbon-based molecules can provide information on the dimension and shape of the two-dimensional hole generated in the process.
- V. Loriot
- , A. Boyer
- & F. Lépine
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Article |
Quantum transport response of topological hinge modes
Topologically protected hinge modes could be important for developing quantum devices, but electronic transport through those states has not been demonstrated. Now quantum transport has been shown in gapless topological hinge states.
- Md Shafayat Hossain
- , Qi Zhang
- & M. Zahid Hasan
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News & Views |
Time in a glass
Ageing is a non-linear, irreversible process that defines many properties of glassy materials. Now, it is shown that the so-called material-time formalism can describe ageing in terms of equilibrium-like properties.
- Beatrice Ruta
- & Daniele Cangialosi
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News & Views |
Organic molecules pumped to resonance
Interacting emitters are the fundamental building blocks of quantum optics and quantum information devices. Pairs of organic molecules embedded in a crystal can become permanently strongly interacting when they are pumped with intense laser light.
- Stuart J. Masson
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News & Views |
Sound interactions across multiple modes
Some quantum acoustic resonators possess a large number of phonon modes at different frequencies. Direct interactions between modes similar to those available for photonic devices have now been demonstrated. This enables manipulation of multimode states.
- Audrey Bienfait
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Article |
Superradiant and subradiant states in lifetime-limited organic molecules through laser-induced tuning
Laser-induced tuning of pairs of lifetime-limited organic emitters allows the controlled creation of superradiant and subradiant entangled states.
- Christian M. Lange
- , Emma Daggett
- & Jonathan D. Hood
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Measure for Measure |
We can see clearly now
Adaptive optics allows scientists to correct for distortions of an image caused by the scattering of light. Anita Chandran illuminates the nature of the technique.
- Anita Mary Chandran
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News & Views |
Through the slopes of a light-induced phase transition
The integration of theory and experiment makes possible tracking the slow evolution of a photodoped Mott insulator to a distinct non-equilibrium metallic phase under the influence of electron-lattice coupling.
- Denitsa R. Baykusheva
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Article
| Open AccessObservation of Josephson harmonics in tunnel junctions
The standard current–phase relation in tunnel Josephson junctions involves a single sinusoidal term, but real junctions are more complicated. The effects of higher Josephson harmonics have now been identified in superconducting qubit devices.
- Dennis Willsch
- , Dennis Rieger
- & Ioan M. Pop
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News & Views |
Symmetry matters
Quantum simulators can provide new insights into the complicated dynamics of quantum many-body systems far from equilibrium. A recent experiment reveals that underlying symmetries dictate the nature of universal scaling dynamics.
- Maximilian Prüfer
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News & Views |
A strange way to get a strange metal
Some cerium and uranium compounds exhibit unusual transport properties due to localized electron states. Recent experiments demonstrate that quantum interference on frustrated lattices provides an alternative route to this behaviour.
- William R. Meier
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Article
| Open AccessBragg glass signatures in PdxErTe3 with X-ray diffraction temperature clustering
The existence of Bragg glasses—featuring nearly perfect crystalline order and glassy features—has yet to be experimentally confirmed for disordered charge-density-wave systems. A machine-learning-based experimental study now provides evidence for a Bragg glass phase in the charge density waves of PdxErTe3.
- Krishnanand Mallayya
- , Joshua Straquadine
- & Eun-Ah Kim
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Article |
Picosecond volume expansion drives a later-time insulator–metal transition in a nano-textured Mott insulator
During a photoinduced phase transition, electronic rearrangements are usually faster than lattice ones. Time-resolved measurements now show that the insulator-to-metal transition in a thin-film Mott insulator is preceded by lattice reconfiguration.
- Anita Verma
- , Denis Golež
- & Andrej Singer
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World View |
Why even specialists struggle with black hole proofs
Mathematical proofs of black hole physics are becoming too complex even for specialists.
- Alejandro Penuela Diaz
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News & Views |
Relaxation of a sensitive superconductor
Some exotic metals exhibit competing electronic states that can be influenced by small perturbations. Now, a study of a kagome superconductor shows that this competition is exquisitely sensitive to weak strain fields, providing insight into its anomalous electronic properties.
- Stephen D. Wilson
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News & Views |
Breaking fast and slow
When cracks creep forward in our three-dimensional world, they do so because of accompanying cracks racing perpendicular to the main direction of motion with almost sonic speed. Clever experiments have now directly demonstrated this phenomenon.
- Michael Marder
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News & Views |
A boost for laser fusion
Inertial confinement represents one of two viable approaches for producing energy from the fusion of hydrogen isotopes. Scientists have now achieved a record yield of fusion energy when directly irradiating targets with only 28 kilojoules of laser energy.
- Vladimir Tikhonchuk
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Article |
Demonstration of hot-spot fuel gain exceeding unity in direct-drive inertial confinement fusion implosions
Inertial confinement fusion experiments in a direct-drive configuration report more energy produced in deuterium–tritium fusion reactions than the amount of energy in the central part of the plasma created by laser irradiation of the fuel capsule.
- C. A. Williams
- , R. Betti
- & E. M. Campbell
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Demonstration of a hydrodynamically equivalent burning plasma in direct-drive inertial confinement fusion
Hydro-equivalent scaling of recent direct-drive inertial confinement fusion implosions shows that a burning plasma can be achieved with a higher laser energy.
- V. Gopalaswamy
- , C. A. Williams
- & C. Deeney
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