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Ultrashort laser light–matter interactions can create unique virtual quantum states. Researchers have now revealed this phenomenon in solution-grown semiconductor nanoplatelets using visible light.
Two independent demonstrations of room-temperature Bose–Einstein condensation of light in semiconductor optical microcavities with embedded quantum wells may pave the way for harnessing the effect for practical applications, such as high-power, single-mode emission from large-aperture devices.
Optical nanoantenna field enhancement is hampered by material- and size-dependent losses. Researchers have now made an atomic antenna using the controlled formation of an isolated germanium vacancy colour centre in diamond, which enables giant near-field optical enhancement and which can detect and control nearby charges and induce energy transfer.
Three-dimensional, label-free optical images of a complex volumetric sample can now be obtained at a 1-Hz volumetric frame rate, thanks to the use of ultrafast camera measurements and sparse representation of the sample optical response.
A quantum-to-quantum Bernoulli factory is demonstrated by using a reconfigurable Clements’s squared unitary circuit in an integrated quantum photonic platform. Three interferometer designs are proposed for the basic operations of a field on qubit states.
The introduction of 3TPYMB, an n-type molecule into inverted perovskite solar cells, enables a power conversion efficiency of 25.6%, with devices maintaining up to 98% of the initial efficiency after 1,800 h of operation.
Generalizing the ‘Kerr-induced synchronization’ concept by means of tailoring the synchronization at arbitrary modes allows to lock and control the repetition rate of a dissipative Kerr soliton frequency comb generated in a silicon nitride microring resonator.
A nonlinear nanophotonic resonator is used to spectrally translate an electro-optic frequency comb to a controllable set of wavelengths between 600 nm and 1,050 nm, with comb properties that are advantageous for high-resolution spectroscopy preserved.
This Review provides an overview of the most recently developed quantum imaging systems, highlighting the nonclassical properties of sources, such as bright squeezed light, entangled photons and single-photon emitters that enable their functionality.
By incorporating time-programmable frequency combs, free-form dual-comb spectroscopy enables compressive sensing at factors of up to 155, with a corresponding reduction in acquisition time without sacrificing spectral resolution.
Two chiral enantiomers, R- and S-BBTI, are found to efficiently emit near-infrared circularly polarized phosphorescence with a large dissymmetry factor of 0.013 in dilute solutions.
This Review provides an overview on high-performance photonic integrated circuit lasers at visible and short near-infrared wavelengths between 400 nm and 1,000 nm, focusing on low-noise, continuous-wave operation needed for many quantum technologies.
Using short pulses in the terahertz spectral range following optical injection, ultrafast excitation of trions to excitons and free carriers in monolayer MoSe2 can be realized within picoseconds, advancing nanoscale optoelectronics devices.
Amorphous phases of self-assembling molecules employed as a hole-transporting layer in inverted perovskite solar cells contribute to homogeneous perovskite film growth, resulting in a power conversion efficiency of 25.20% (certified 24.35%) for one-square-centimetre area cells.
By entangling multiple qudits within the Hilbert space of each photon, cluster states with up to 9.28 qubits are generated at a rate of 100 Hz. The high-dimensional encoding substantially reduces the computation duration compared to the standard two-dimensional encoding.
Cr3+-sensitized lanthanide-doped nanoparticles afford high-brightness luminescence in the near-infrared region for applications in in vivo non-invasive bioimaging.
Integrating an organic photodiode with a tandem OLED enables positive photonic feedback that results in bistable behaviour. Devices show giant hysteresis in their current–voltage–luminance characteristic and upconversion of near-infrared to visible light with 100-fold photon-to-photon gain.
A Brillouin laser-driven terahertz oscillator is developed. The phase noise level of the generated terahertz waves is less than –100 dBc Hz–1, translating to timing noise below 10 as Hz–1/2 at 10 kHz Fourier frequency, over a carrier frequency range from 300 GHz to 3 THz.