Articles

Limited-size object microscopy (LSOM) enables label-free super-resolution imaging of isolated nano-objects with a resolution as low as λ/8 under the sole assumption of the limited size of the imaged object.

Integrated quantum memories based on ¹⁵¹Eu³⁺:Y₂SiO₅ crystals coupled with impedance-matched optical cavities are demonstrated. Multiplexed quantum storage efficiencies of 80.3% and 69.8% are achieved for weak coherent pulses and telecom-heralded single photons, respectively.

A general protocol for high-dimensional entangling gates is developed and applied for two four-dimensional qudits encoded in orbital angular momentum (OAM). The phase-locking technique stabilizes OAM sorters, leading to a process fidelity within a range from 0.71 to 0.85.

The researchers exploit lattice-anchoring-enhanced dynamic repair in organic–inorganic hybrid perovskites to demonstrate a single-crystal detector with a sensitivity of 165.6 μC mGy⁻¹ cm⁻³ and radiation stability under high-fluence 6-MeV X-rays (6.4 × 10¹¹ photons cm⁻²) and 1.2-MeV electrons (6 × 10¹⁶ electrons cm⁻²). The findings may have implications for diverse applications, including radiation therapy, astronomy and nuclear technology.

A stimulated Raman scattering method based on dual-band laser-induced quantum interference enables ultra broadband and rapid hyperspectral Raman imaging of biological tissue and the detection of up to 11 key biomarkers in human serum.

Treating the tin–lead surface in perovskite films with caesium hydroxide forms solid metal oxides that stabilize the surface against photothermal degradation. When used in all-perovskite tandem solar cells, a certified power conversion efficiency of 28.56% is achieved, 90% of which is retained after 500 h of testing under ISOS-L-3 conditions.

Researchers study the transition from bound states in the continuum (BICs) to quasi-BIC caused by out-of-plane asymmetry and illustrate how quality factors of BIC resonances are valuable tools for precise chip patterning accuracy.

A universal, non-destructive and scalable method to precisely characterize loss and gain of optical components inside photonic integrated circuits is discussed.

A mode-locked laser is achieved by coupling two ring resonators in a parity–time-symmetric configuration. Stable pulses emerge through a balance of gain in one cavity and loss in the other, combined with symmetry-breaking induced by the Kerr effect.

A nanoimprint technique exploiting capillary forces in nanohole arrays enables patterning CdSe-based quantum-dot LEDs with a resolution of nearly 170,000 pixels per inch while maintaining high average external quantum efficiencies of 17.0%, 10.5% and 5.7% for red-, green- and blue-emitting pixels, respectively.

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 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.

A new self-assembled monolayer at the buried interface of inverted perovskite solar cells improves photostability and favours energy transfer, resulting in devices with a certified power conversion efficiency of 27.19% and 1,500-h stability under the ISOS-L-2 protocol.

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.

On-chip terahertz topological leaky-wave antennas based on valley photonic crystals achieve beam scanning over 75% of the three-dimensional solid angle. The time-reversal-symmetric topological leaky-wave antenna further enables the simultaneous demonstration of real-time high-definition television streaming and 24 Gbps directional wireless data transmission in opposite directions.

A method to coherently manipulate excitons and perform all-optical logic operations using the valley degree of freedom in monolayer WS₂ is discussed.

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

An amorphous–crystalline silicon nitride nanocomposite at the buried interface of perovskite solar cells enables small-area devices with a certified power conversion efficiency of 26.37%. Modules with an area of 1,252 cm² maintain stable output for 6 months of outdoor operation.

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.

Catalyst-free conversion of methane and carbon dioxide using light of various wavelengths under ambient conditions is reported.