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Continuously trapped atoms provide advantage for atom interferometry, yet current schemes are limited by dephasing. Here, the authors develop a Floquet-engineered atom interferometry platform for quantum force sensing purposes, unveiling regimes where the interferometric phase is insensitive to noise.

Magnetic domain walls can exhibit a variety of different spin textures. Chen et al. show that it is possible to switch these textures between left handed, right handed, cycloidal, helical and mixed domain wall structures by controlling uniaxial strain in iron/nickel bilayer thin films on tungsten.

Here, the authors show the emergence of valley-polarized Floquet-Bloch states in 2H-WSe₂ upon below-band-gap driving using circularly polarized light.

Bloch oscillations are oscillatory motions of particles in a periodic potential. The observation of fractional Bloch oscillations in a photonic model system by Corrielli and colleagues offers alternative means to study this quantum phenomenon in systems other than natural crystals.

Bloch oscillations—oscillatory motions of wave packets in periodic potentials acting under constant forces—have been observed in semiconductor superlattices and photonic waveguide arrays. Here, the authors extend these ideas to plasmonics to observe Bloch oscillations and discrete diffraction.

Three-dimensional nanofabrication allows for the precise tailoring of curvature of magnetic nanowires, and therefore the local symmetry breaking. Here, Ruiz-Gomez et al use this control to study the interaction of domain walls with local curvature, engineering potential wells and shift registers.

Authors predict polar Bloch points with negative capacitance in tensile-strained ultrathin ferroelectric PbTiO₃ film by phase-field simulations, observing their polarization structures by scanning transmission electron microscopic imaging.

Monolayer graphene has been long proposed as a candidate system for Floquet engineering. Time- and angle-resolved photoemission spectroscopy measurements now show the formation of Floquet–Bloch states in this material.

Femtosecond laser pulse-induced coherent helicity switching of magnetic vortices in permalloy disks on picosecond timescales is reported.

Periodic laser light can modify the electronic properties of solids and offers a path to create new material phases. In a topological antiferromagnet, periodic driving with opposite light helicities is now shown to produce distinct Dirac mass gaps.

By forcing electron–hole pairs onto closed trajectories attosecond clocking of delocalized Bloch electrons is achieved, enabling greater understanding of unexpected phase transitions and quantum-dynamic phenomena.

Observation of a Bloch-Siegert shift has remained elusive. Here, Wu et al, reports spin-selective Bloch-Siegert shift in lead halide perovskite quantum dots, and highlights the importance of many-body interactions in correctly modeling the shift.

There are many possible mechanisms of high-harmonic generation from crystals. Here the authors discuss the role of the Bloch oscillation to nonlinear response of the crystal and harmonic radiation from it.

Synthetic dimensions can introduce band properties without a periodic structure in real space, but they have largely been studied in linear systems. A study using an optical resonator has now shown non-linear soliton states in synthetic frequency space.

Photonic crystals (PhCs) are artificial periodic materials that can be used to manipulate the flow of light. Here, the authors report the realization of asymmetric PhCs based on in-plane hyperbolic phonon polaritons in perforated α-MoO₃, showing low-symmetry deep-subwavelength Bloch modes that are robust against lattice rearrangement in specific directions.

The build-up and dephasing of Floquet-–Bloch bands is visualized in both subcycle band-structure videography and quantum theory, revealing the interplay of strong-field intraband and interband excitations in a non-equilibrium Floquet picture.

In three dimensional systems with broken bulk inversion symmetry, skyrmions can form extended string-like structures. Here, Birch et al use scanning transmission x-ray microscopy to demonstrate the current induced generation and motion of these three dimensional skyrmion strings.

Skyrmions and anti-skyrmions often exist in distinct material systems. Here, the authors observe elliptical skyrmions and anti-skyrmions with opposite topological charges in one tetragonal Heusler compound Mn_1.4Pt_0.9Pd_0.1Sn with D_2d symmetry.

The Bloch–Siegert shift—a strong-field phenomenon that implies a failure of the rotating-wave approximation—is observed in the polariton dispersion diagram of a two-dimensional electron gas system inside a high-Q terahertz photonic crystal cavity.

Graphene has a centrosymmetric crystal symmetry, which prohibits second-order effects in transport experiments. Yet, giant second-order nonlinear transports can emerge in graphene moiré superlattices at zero magnetic field, originating from the skew scattering of chiral Bloch electrons in the superlattice and giving rise to both longitudinal and transverse nonlinear conductivities under time-reversal symmetry.

Konrad E. Bloch (1912–2000) — research chemist who outlined the path of cholesterol synthesis.

A nonlinear Hall rectenna based on the type-II Weyl semimetal niobium iridium tetratelluride (NbIrTe₄) can offer 27th-order nonlinear frequency comb generation and high-bandwidth mixing exceeding 100 GHz.

Efficient electrical control of domain walls underpins fast, low-energy magnetic memories. Wu et al report field-free domain wall velocities of 1 km s⁻¹ at 20 MA cm⁻² in ferrimagnetic NiCo₂O₄, arising from giant nonadiabatic spin-transfer torque.

Quasi-BICs are known for their high sensitivity to structural disorder, which strongly affects their quality factor. Here, authors introduce quasi-bound flat bands in the continuum — optical states originating from disorder-induced band folding. Their theoretical and experimental results provide a paradigm for designing devices of high-quality factor and broad angular response.

The bulk boundary effects of non-hermitian systems are a burgeoning area of interest with the potential to unveil new and interesting physics. Here, the authors investigate how the non-Hermitian skin effect can drastically affect the emission and absorption quanta and Rabi oscillations in a driven non-Hermitian two-level lattice, which is sustainable even the system possess gain or loss.

Most 2D magnets support only a single skyrmion phase. Here, the authors observe two distinct topological phases: Bloch and hybrid skyrmions, with high thermostability in the room-temperature ferromagnet Fe₃GaTe₂.

Spin torques generated via the spin-Hall effect in CoFeB/W/MgO are found to stabilize magnetization in a high-energy anti-parallel state relative to an applied magnetic field. This observation serves as a platform for studying far-from-equilibrium spin dynamics and holds promise for realizing unconventional computing paradigms.

Current-driven domain wall propagation in ferromagnetic layers adjacent to normal metals can be very fast, which could recently be explained by their chirality. Here, the authors show means of controlling the magnetic chirality, which opens the possibility to tune the dynamics of domain walls.

Hole spin qubits in germanium have seen significant advancements, though improving control and noise resilience remains a key challenge. Here, the authors realize a dressed singlet-triplet qubit in germanium, achieving frequency-modulated high-fidelity control and a tenfold increase in coherence time.

Calculations on near-term quantum computers will be limited by the effects of noise. It has now been shown how different kinds of noise limit the achievable computational advantage of many proposed quantum algorithms.

Authors investigate graphene/cobalt and graphene/nickel interfaces, and observe a non-zero Dzyaloshinskii–Moriya interaction that they attribute to the Rashba effect; calculations suggest the effect can be enhanced in van der Waals heterostructures.

Information leaked by a quantum system into its environment causes decoherence but if it is recorded then it can be used to infer the quantum state. Ficheux et al. monitor the relaxation and dephasing of a qubit and show that this allows all three components of the qubit to be probed simultaneously.

In this work, the authors show that photonic topological lattices with dissipative couplings could exhibit non-Abelian dynamics and geometric phases that are in sharp contrast to those arising in typical energy-conserving systems.

Floquet engineering is often limited by weak light–matter coupling and heating. Now it is shown that exciton-driven fields in monolayer semiconductors produce stronger, longer-lived Floquet effects and reveal hybridization linked to excitonic phases.

Non-Hermitian physics, like the non-Hermitian skin effect (NHSE), is well-explored in classical platforms but remains challenging in quantum systems. Here, the authors study a quantum subsystem described by an effective non-Hermitian Hamiltonian derived from its exact frequency-dependent self-energy, and show that only complex-frequency fingerprinting can uniquely detect NHSE-induced responses, providing a rigorous framework for exploring non-Hermitian phenomena without approximation.

Flatband-induced localisation generally does not apply to complex wavefunctions carrying orbital angular momentum. Here, authors develop a general framework for constructing highly degenerate flatbands in 2D and 3D acoustic crystals, enabling the localisation of OAM-carrying wavefunctions.

Atomic-column-resolved electron magnetic circular dichroism enables the direct imaging of G-type and C-type antiferromagnetic orders in DyFeO₃ and α-Fe₂O₃, respectively, and the identification of a one-unit-cell-thick magnetic dead layer at a buried DyScO₃–SmFeO₃ interface.

Here, authors construct a moving potential barrier in a synthetic temporal lattice. They unveil the selection rules for choosing potential moving speed as well as the conditions to achieve transparent moving potentials and refraction.

Magnetic skyrmions typically form hexagonal crystals with either uniquely Bloch or Néel-type textures. Here, a polar magnet EuNiGe₃ is shown to host two skyrmion crystal phases with hexagonal and square structures, and hybrid Bloch-Néel textures.

Trapping electromagnetic waves within the radiation continuum has significant implications in lasers and sensing. Here the authors achieved a moiré BIC in a photonic crystal slab, demonstrating simultaneous flat-band dispersing and high-Q features within a wide-angle regime.

Known examples of negative refraction in metamaterials do not distinguish between positive and negative angles of incidence. Here, the authors show that it is possible to break this symmetry using an asymmetric unit cell, and demonstrate it using a mechanical metamaterial working at GHz frequencies.

The CMS experiment at CERN reports one of the highest-precision measurements of the W boson mass, finding it in line with standard model predictions and at odds with recent anomalous measurements.