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Entanglement between single photons and solid-state emitters is a key component for photonic quantum computing and networks. Here, using a single electron spin in a quantum dot, the authors present a deterministic photon source achieving three-qubit entanglement of one electron spin and two photons.

Long-range interactions have been predicted to enable a phase transition in one-dimensional systems. An experiment now validates this hypothesis in a trapped-ion quantum simulator by observing a finite-energy phase transition in one dimension.

We propose a multi-particle ‘which-path’ gedanken experiment with a quantum detector. Contrary to conventional ‘which-path’ experiments, the detector maintains its quantum state during interactions with the particles. We show how such interactions can create an interference pattern that vanishes on average, as in conventional ‘which-path’ schemes, but contains hidden many-body quantum correlations. Measuring the state of the quantum detector projects the joint-particle wavefunction into highly entangled states, such as GHZ’s. Conversely, measuring the particles projects the detector wavefunction into desired states, such as Schrodinger-cat or GKP states for a harmonic-oscillator detector, e.g., a photonic cavity. Our work thus opens a new path to the creation and exploration of many-body quantum correlations in systems not often associated with these phenomena, such as atoms in waveguide QED and free electrons in transmission electron microscopy.

A semiconductor quantum dot can passively mediate interactions between two photons, enabling the creation of entangled photon states.

Recently, there have been proposals to extend the concept of time crystals to topological order. Here the authors observe a prethermal topologically ordered time crystal on a superconducting quantum processor, where discrete time-translation symmetry breaking manifests for nonlocal rather than local observables.

Using a trapped-ion quantum simulator of up to 50 spins, researchers explore new universal scaling laws in non-equilibrium dynamics, revealing unique critical behaviors following a sequence of quenches in a long-range 1D Ising model.

Controlling the directional scattering of chiral light at the nanoscale is important for optical technologies. Here, the authors present a concept of rotating chiral dipoles to achieve unidirectional enantio-sensitive chiral scattering.

The study reveals strikingly different nonlinear Rabi splitting dynamics in MoSe₂ monolayers and (Ga,In)As quantum wells, highlighting the pivotal role of Coulomb interactions in shaping light–matter coupling in two-dimensional semiconductors.

Significant efforts have been dedicated to mitigate gate errors in quantum devices, while comparatively little attention has been given to the increasing issue of readout errors. The authors present an explicit protocol for comprehensive readout error mitigation with quantum state tomography, and demonstrate its applicability experimentally on a superconducting qubit device.

In this work, V. Aita et al. investigate the interaction of vector vortex beams with anisotropic metamaterials, showing how, depending on the state of polarization, their plasmonic resonances can be excited and exploited to modify the beam structure.

Conventional models of high harmonic generation typically do not provide a full quantum description of all phenomena. Here, the authors develop a fully quantum theory for high harmonic generation and use it to study the emission from a quantum system in a strong field.

Inspired by thermal expansion and refractive index changes in the nanostructures of iridescent Morpho butterfly scales, scientists demonstrate upconverted mid-wave infrared detection with a temperature sensitivity of 18–62 mK and a heat-sink-free response speed of 35–40 Hz.

Technologies operating in the terahertz (THz) range are essential for advancing high-speed communication, sensing and imaging. Here, the authors demonstrate that a HgTe-based heterostructure with electronic band inversion can efficiently mix and up-convert weak signals into THz frequencies at room temperature, using strong nonlinear effects.

Long coherence times in a subset of states that allows for transitions in both microwave and optical range have been reported using an isotopically purified ¹⁷¹Yb³⁺:Y₂SiO₅ crystal, rendering the system suitable for quantum information applications.

Deep learning reduces errors in sequences from PacBio HiFi reads.

Controlling the motion and pinning of vortices is essential for developing superconducting electronics. Here, the authors reveal the vortex pinning nano-network in thin superconducting niobium films by developing a scanning quantum vortex microscopy approach.

According to a recent theoretical model, Majorana bound states can induce a parity protected superconducting diode effect. Here, we fabricate an array of Nb islands on an intrinsic topological insulator, i.e., a system where Majorana bound states are expected, and observe a strong superconducting diode effect, as well as a superconducting analogue of the optical diffraction grating.

A manufacturable platform for quantum computing with photons is introduced and a set of monolithically integrated silicon-photonics-based modules is benchmarked, demonstrating dual-rail photonic qubits with performance close to thresholds required for operation.

This paper shows theoretical and experimental results of the electric field-induced second harmonic generation in a single metal-silicon nanostructure for an optical-induced control of the χ⁽²⁾ susceptibility.