Acs Journals

That author's affiliation: Department of Computer Science and Technology, Tsinghua University, Beijing, P.R. China Institution (first & last author): Department of Computer Science and Technology, Tsinghua University, Beijing, P.R. China

Louvre: Relaxing Hardware Requirements of Quantum LDPC Codes by Routing with Expanded Quantum Instruction Set

The authors present a theoretical mechanism for the recently-observed pair density modulation in exfoliated flakes of the iron-based superconductor FeTe0.55Se0.45. The mechanism is based on the appearance of a nematic mixed s± + d superconducting phase in a system with broken glide mirror symmetry.

That author's affiliation: Paul Scherrer Institute Institution (first & last author): University of Basel

High-quality and field resilient microwave resonators on Ge quantum well heterostructures

Macroscopic quantum coherence arises in two-component exciton Bose–Einstein condensates within MoSe2/hBN/WSe2 electron–hole bilayers, exhibiting distinct spin–valley polarized phases, quantum phase transitions under magnetic fields and stable condensate behaviour up to approximately 1.8 K.

Water-suspended carbon nanotubes move more slowly in green light, suggesting that excited electrons in the tubes couple to the water through ‘quantum friction’.

Recently field-free spin-orbit torque switching has been demonstrated in van der Waals magnetic materials. Here, taking advantage of the quantum sensing properties of spin defects in hexagonal Boron Nitride, Zhang, Zhou, and coauthors image the current-induced spin-orbit torque switching in the van der Waals magnet, Fe3GaTe2

Laughlin states are descriptions of the quantum Hall effect in which interactions between electrons create fractionally charged quasiparticles. Now, excitons are shown to form between these quasiparticles in a bilayer graphene device.

Demonstrating optical control of complex phases in a trapped-ion qubit

The authors interface the quantum Hall edge modes of Cd3As2 films with a thin superconducting NbN strip. They find that the downstream thermoelectric response alternates in sign, revealing the contribution of crossed Andreev reflections.

Experimental realization of qubit-state-controlled directional edge states in waveguide QED

The tech giant says it will make ‘topological’ quantum computers that can be scaled up faster than competing technologies.

That author's affiliation: Huazhong University of Science and Technology Institution (first & last author): Shanghai Jiao Tong University

Scanning tunneling spectroscopic imaging reveals a field-driven symmetry breaking of CDW modulations in superconducting NbSe₂. Model calculations suggest that the observed anisotropy originates from a Doppler-shift-induced reconstruction of the dispersion of Bogoliubov quasiparticle excitations.

A broadband, sub-wavelength time-domain microscope is described, enabling the observation that terahertz light trapped within a cavity can mediate attractive interactions in a tunable van der Waals material.

The presence of Majorana zero modes is often difficult to confirm experimentally due to the detrimental effects of disorder. Now, a chain of magnetic atoms on a proximatized surface is shown to exhibit robust Majorana states with disorder present.

That author's affiliation: Max Planck Institute for Polymer Research Institution (first & last author): Max Planck Institute for Polymer Research

Bottom-Up Synthesis of Molecular Nanodiamond from Nanographene

Layered anisotropic 2D materials hold potential for the realization of compact polarization modulators. Here, the authors realize a Fabry-Perot cavity integrating two orthogonally stacked and independently gated black phosphorus trilayers, showing tunable polarization control and predicting electronic access to up to 86% of the Poincaré sphere.

Local quantum nondemolition measurements and optical manipulation of long-lived circular Rydberg atoms are demonstrated by coupling them to an auxiliary array of low-angular-momentum Rydberg atoms.

That author's affiliation: Karlsruhe Institute of Technology Institution (first & last author): Karlsruhe Institute of Technology

Mapping the positions of Two-Level-Systems on the surface of a superconducting transmon qubit

Bright squeezed vacuum light boosts nonlinear atomic tunnelling ionization more than 20-fold compared with coherent light, enabling quantum control of strong-field processes without increasing classical intensity.

A reconstruction method based on Gaussian-apodized single-sideband electron ptychography removes artefacts to enable the high-fidelity identification of guest species in porous materials.

More spin current can be produced with less energy lost at the source, thanks to inter-magnet pumping that rebalances angular momentum dissipation between sublattices in a ferrimagnetic multilayer.

Bounding the computational power of bosonic systems

That author's affiliation: Institut Català de Nanociència i Nanotecnologia First author institution: Eindhoven University of Technology Last author institution: Institut Català de Nanociència i Nanotecnologia

The combination of viscous heat flow and thermoelastic effects leads to a non-diffusive heat transport regime in MoSe2 and MoS2. Moreover, it can be controlled through the variation in sample thickness and by choosing between continuous and pulsed heating.

How magnetic impurities influence superconductivity and electronic order in kagome metals remains unclear. Now anisotropic Kondo resonances intertwined with the superconducting gap are observed in a magnetically doped kagome superconductor.

Quantum magic dynamics in random circuits

Quantum computational sensing using quantum signal processing, quantum neural networks, and Hamiltonian engineering

Practical blueprint for low-depth photonic quantum computing with quantum dots

An ultrafast imaging technique captured the propagation of charge-decoupled excitations in twisted bilayer WSe2. Two spin–valley modes with distinct propagation behaviours were revealed, consistent with the phase and amplitude modes of a spin–valley superfluid.

That author's affiliation: University of Science and Technology of China Institution (first & last author): University of Science and Technology of China

A programmable photonic quantum processor, Jiuzhang 4.0, incorporates 1,024 high-efficiency squeezed states into a hybrid spatial–temporal encoded 8,176-mode circuit.

That author's affiliation: Massachusetts Institute of Technology Institution (first & last author): Massachusetts Institute of Technology

Electron-beam control enables deterministic placement of tens of thousands of atomic defects in three-dimensional crystals, creating stable, programmable artificial matter for scalable quantum and nanoscale technologies.

That author's affiliation: University of Vienna Institution (first & last author): University of Vienna

An electron-beam technique that can precisely create thousands of atomic defects in a crystal could be used to build quantum devices.

How angular momentum is exchanged and conserved among lattice modes has been difficult to measure experimentally, but has now been observed via a coherent three-phonon scattering process in a topological insulator.

That author's affiliation: UNSW Sydney First author institution: UNSW Sydney Last author institution: University of Canberra

A tunable artificial crystal in a shallow GaAs quantum well is shown to enable interaction-driven insulating behaviour. Electrostatic control tunes the band structure from graphene-like to kagome-like bands.