Featured
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Chalcogenide glass-on-graphene photonics
Exploiting the peculiar properties of graphene, a series of high-performance glass-on-graphene devices, such as polarizers, thermo-optic switches and mid-infrared waveguide-integrated photodetectors and modulators are realized.
- Hongtao Lin
- , Yi Song
- & Juejun Hu
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Letter |
Ultrafast synthesis and switching of light polarization in nonlinear anisotropic metamaterials
Picosecond all-optical switching of the polarization of visible light is achieved by using the anisotropy and nonlinearity of a hyperbolic metamaterial.
- Luke H. Nicholls
- , Francisco J. Rodríguez-Fortuño
- & Anatoly V. Zayats
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News & Views |
Nanotube chemistry tunes light
Room-temperature single-photon emission at several wavelengths in the near-infrared, including the telecom window, is realized by organic colour centres chemically implanted on chirality-defined single-walled carbon nanotubes.
- Kartik Srinivasan
- & Ming Zheng
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Article |
Tunable room-temperature single-photon emission at telecom wavelengths from sp3 defects in carbon nanotubes
Single-photon emission with 99% purity is generated from sp3 defects in carbon nanotubes (CNTs) by optical excitation at room temperature. By increasing the CNT diameter from 0.76 nm to 0.94 nm, the emission wavelength can be changed from 1,100 nm to 1,600 nm.
- Xiaowei He
- , Nicolai F. Hartmann
- & Stephen K. Doorn
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Article |
Giant optical gain in a single-crystal erbium chloride silicate nanowire
Erbium chloride silicate nanowire promises optical gain for nanophotonic circuits.
- Hao Sun
- , Leijun Yin
- & C. Z. Ning
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Article |
Dye-sensitized solar cells for efficient power generation under ambient lighting
A dye-sensitized solar cell that has been designed for efficient operation under indoor lighting could offer a convenient means for powering the Internet of Things.
- Marina Freitag
- , Joël Teuscher
- & Anders Hagfeldt
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Article |
Highly efficient luminescent solar concentrators based on earth-abundant indirect-bandgap silicon quantum dots
Reabsorption losses in luminescent solar concentrators can be avoided by the use of indirect-bandgap semiconductor nanostructures. The technology has been used to demonstrate flexible luminescent solar concentrators with performance comparable to flat concentrators.
- Francesco Meinardi
- , Samantha Ehrenberg
- & Sergio Brovelli
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Letter |
Optical determination of the Néel vector in a CuMnAs thin-film antiferromagnet
Due to their nature antiferromagnets are difficult to probe with conventional magnetometers. The Néel vector of a practically important antiferromagnet, CuMnAs, has now been determined by a femtosecond pump–probe magneto-optical experiment.
- V. Saidl
- , P. Němec
- & T. Jungwirth
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Article |
A flexible and wearable terahertz scanner
A flexible and wearable terahertz scanner based on carbon nanotubes is demonstrated at room temperature over a frequency range 0.14 THz to 39 THz. The terahertz photothermoelectricity is enhanced by using different electrode materials.
- D. Suzuki
- , S. Oda
- & Y. Kawano
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Article |
Optical microresonators as single-particle absorption spectrometers
Single-particle double-modulation absorption spectrometers based on whispering-gallery-mode microresonators achieve sub-100-Hz sensitivity to photothermal resonance shifts and allow for the study of arrays of Fano resonances in the context of plasmonic–photonic hybridization.
- Kevin D. Heylman
- , Niket Thakkar
- & Randall H. Goldsmith
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Letter |
Plasmonic metamaterial absorber for broadband manipulation of mechanical resonances
Coherent mechanical oscillations are optically driven on a metamaterial absorber that has a voltage-tunable Fano resonance. Inversely, optical damping of the mechanical resonance is also achieved.
- Hai Zhu
- , Fei Yi
- & Ertugrul Cubukcu
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Article |
Fully integrated quantum photonic circuit with an electrically driven light source
Single photons are generated from electrically driven semiconducting single-walled carbon nanotubes embedded in a photonic circuit. Pronounced antibunching is observed when photon correlation is measured at cryogenic temperatures.
- Svetlana Khasminskaya
- , Felix Pyatkov
- & Wolfram H. P. Pernice
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Books & Arts |
New titles at a glance
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Letter |
Solution-processed solar cells based on environmentally friendly AgBiS2 nanocrystals
AgBiS2 nanocrystals offer a route to solution-processed environmentally friendly solar cells.
- María Bernechea
- , Nichole Cates
- & Gerasimos Konstantatos
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Letter |
Removing orientation-induced localization biases in single-molecule microscopy using a broadband metasurface mask
A custom-designed metamaterial mask helps improve the accuracy of microscopy of single fluorescent molecules.
- Mikael P. Backlund
- , Amir Arbabi
- & W. E. Moerner
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Article |
Near-field dielectric scattering promotes optical absorption by platinum nanoparticles
A technique to enhance optical absorption by platinum nanoparticles is exploited for driving photocatalytic redox reactions.
- Nan Zhang
- , Chuang Han
- & Yugang Sun
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Letter |
Electrically pumped continuous-wave III–V quantum dot lasers on silicon
The growth of III–V quantum dot lasers directly onto a silicon substrate aids photonics and electronics integration.
- Siming Chen
- , Wei Li
- & Huiyun Liu
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Letter |
Highly efficient quantum dot near-infrared light-emitting diodes
Embedding quantum dots in a perovskite matrix yields efficient light emitters.
- Xiwen Gong
- , Zhenyu Yang
- & Edward H. Sargent
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Review Article |
Lead sulphide nanocrystal photodetector technologies
Concepts and advances of lead sulphide nanocrystal-based photodetector technologies are reviewed.
- Rinku Saran
- & Richard J. Curry
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Letter |
Self-homodyne measurement of a dynamic Mollow triplet in the solid state
Intrinsic Fano interference in a strongly coupled quantum dot/photonic crystal cavity system is controlled to remove most of the coherently scattered light. This result leads to the first experimental observation of the dynamic Mollow triplet.
- Kevin A. Fischer
- , Kai Müller
- & Jelena Vučković
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News & Views |
Ultra-tunable graphene light source
Compact monochromatic X-ray sources based on graphene plasmons may soon become a reality.
- Gordon Robb
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Letter |
Solid-state infrared-to-visible upconversion sensitized by colloidal nanocrystals
Lead sulphide colloidal nanocrystals offer a solid-state answer for infrared-to-visible upconversion.
- Mengfei Wu
- , Daniel N. Congreve
- & Marc A. Baldo
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Article |
On-chip zero-index metamaterials
Most metamaterial experiments occur in bulk transmission geometries. Here researchers demonstrate integrated in-plane zero-index metamaterials.
- Yang Li
- , Shota Kita
- & Eric Mazur
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Letter |
Perfect absorption in nanotextured thin films via Anderson-localized photon modes
Researchers use Anderson localization in nanotextured amorphous silicon and demonstrate enhanced absorption of light.
- Martin Aeschlimann
- , Tobias Brixner
- & Philip Thielen
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News & Views |
Lift off for graphene
The finding that a graphene sponge structure can undergo light-driven levitation exposes both fundamentally interesting physics and thought-provoking potential for next-generation space propulsion.
- Nathaniel Gabor
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Letter |
Room-temperature lasing in a single nanowire with quantum dots
The room-temperature lasing of a single nanowire containing 50 quantum dots is demonstrated, paving the way towards ultrasmall lasers with extremely low power consumption for integrated photonic systems.
- Jun Tatebayashi
- , Satoshi Kako
- & Yasuhiko Arakawa
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Article |
Macroscopic and direct light propulsion of bulk graphene material
The observation of macroscopic and direct light propulsion of bulk-graphene-based material offers an exciting opportunity for realizing long-sought proposals in areas such as space transportation driven directly by sunlight.
- Tengfei Zhang
- , Huicong Chang
- & Yongsheng Chen
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Article |
High-efficiency light-emitting devices based on quantum dots with tailored nanostructures
Bright, efficient red, green and blue quantum-dot LEDs are realized by customizing the nanostructure of the quantum dots.
- Yixing Yang
- , Ying Zheng
- & Lei Qian
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Letter |
Controlling light with metamaterial-based nonlinear photonic crystals
Nonlinearity engineering is demonstrated by the construction of metamaterial-based photonic crystals. Nonlinear emission and diffraction are controlled and intense focusing is reported.
- Nadav Segal
- , Shay Keren-Zur
- & Tal Ellenbogen
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Editorial |
A year to remember
2015 marks the 150th anniversary of Maxwell's formulation of his theory of electromagnetism and a year-long celebration of the importance of optics.
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Letter |
Probing the mechanisms of large Purcell enhancement in plasmonic nanoantennas
Plasmonic nanostructures enable spontaneous emission enhancement factors of greater than 1,000 — the largest observed to date. The orientation of dipole emitters in nanogaps plays a vital role.
- Gleb M. Akselrod
- , Christos Argyropoulos
- & Maiken H. Mikkelsen
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Article |
Access to long-term optical memories using photon echoes retrieved from semiconductor spins
The authors demonstrate a technique for coherently transferring quantum information from the orbital to the spin degrees of freedom of electrons in a semiconductor, and back again.
- L. Langer
- , S. V. Poltavtsev
- & M. Bayer
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Article |
Through-skull fluorescence imaging of the brain in a new near-infrared window
Near-infrared photoluminescence from carbon nanotubes makes it possible to optically image the vasculature in the brain directly through the skull.
- Guosong Hong
- , Shuo Diao
- & Hongjie Dai
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Letter |
On-demand generation of indistinguishable polarization-entangled photon pairs
Polarization-entangled photon pairs are generated from an In(Ga)As quantum dot by setting the pump intensity such that the inversion of the quantum dot from the ground to the biexcitonic state is the most probable transition. On-demand generation is demonstrated with an ultrahigh purity, a high entanglement fidelity and high two-photon-interference non-post-selective visibilities.
- M. Müller
- , S. Bounouar
- & P. Michler
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Editorial |
The significance of research
When promoting the value of their research or procuring funding, researchers often need to explain the significance of their work to the community — something that can be just as tricky as the research itself.
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Article |
Triplet–triplet exciton dynamics in single-walled carbon nanotubes
Little is known about triplet excitons in semiconducting single-walled nanotubes, despite their importance in various applications. The pump–probe and spin-sensitive photoluminescence of such nanotubes is studied, and the quantum yield of triplet formation, triplet lifetime and triplet exciton size are found to be 5 ± 2%, 30 ± 10 µs and 0.65 nm, respectively.
- Dominik Stich
- , Florian Späth
- & Tobias Hertel
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