Volume 20 Issue 2, February 2026

Mode mixing and mapping with a piece of multimode optical fibre and spatial light modulators creates a bridge between two isolated quantum networks, linking distant nodes with quantum connectivity.

Lithium tantalate (LiTaO₃) is heterogeneously integrated with silicon photonics circuits, enabling high modulation speed, reduced bias drift and a high optical damage threshold, while ensuring full compatibility with the existing silicon photonics process design kit.

This Review discusses recent advances in sensitized fluorescence emitters for deep-blue organic light-emitting diodes, reviewing progress in molecular design and device performance as well as key remaining challenges.

A plasma lens capable of focusing broadband extreme-ultraviolet attosecond pulses is demonstrated.

A resource-efficient characterization method to completely characterize multimode second-order nonlinear optical quantum processes is demonstrated, satisfying the required physical condition. Scaling quadratically with the mode number, it enables complete 16-mode analysis.

The researchers show that a subwavelength film of indium tin oxide, the bulk permittivity of which is strategically modulated via optical pumping, can be dynamically tuned to act as both a non-resonant amplifier and a perfect absorber. The findings extend the concept of coherent perfect absorption to the temporal domain and may enable coherent manipulation of light in Floquet-engineered complex photonic systems.

A vapour post-treatment strategy enables fully printed carbon-electrode perovskite solar modules with an area of about 50 cm² and a certified power conversion efficiency of 19.26%. The modules show no performance decay after 1,000 h of continuous operation at 65 °C.

Formation of a near-phase-pure two-dimensional perovskite at the buried interface of perovskite solar cells enables improved crystallization and defect passivation, resulting in devices with a certified power conversion efficiency of 26.02%. Ninety-five per cent of the initial PCE is maintained after 1,000 hours of operation.

An all-optical method involving third-harmonic Faraday rotation is used to probe the breaking of time-reversal symmetry in mono- and bilayer transition metal dichalcogenide WS₂.

A colour correction array featuring red-, green- and blue-sensitive organic transistors integrated within a single pixel enables self-adaptive intensity and colour correction.

A reconfigurable eight-user photonic network is realized by connecting two local four-user networks through a programmable 8 × 8-dimensional multi-port device. Multiplexed routing and swapping of qubit entanglement are demonstrated for all network configurations and channels.

Researchers demonstrate quantum dot lasing using excitation by an electrically modulated (0.1–1% duty cycle), low-power continuous-wave laser diode, achieving lasing at a pump intensity just above 500 W cm⁻² at 77 K and 3.6 kW cm⁻² at room temperature.

The second plateau in high-harmonic generation from liquids is due to off-site recombination of electrons, facilitated by the spatial delocalization of electron–hole wavefunctions.

Lithium tantalate is heterogeneously integrated with silicon photonic integrated circuits via a micro-transfer printing process in a manner fully compatible with existing workflows. A Mach–Zehnder modulator with an insertion loss of 2.9 dB and 70 GHz operation is demonstrated.

A non-coplanar axially chiral molecular contact favours the crystalline growth of perovskite film and improves interfacial stability in perovskite solar cells. Small-area devices yield a certified power conversion efficiency of 26.44% and maintain 98% of it after 2,000 hours of operation.