Featured
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News & Views |
Superfast photon counting
The news that superconducting nanowire detectors can detect single photons with a timing precision of just a few picoseconds will benefit applications ranging from sensing to quantum communications.
- Robert H. Hadfield
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Article |
Demonstration of sub-3 ps temporal resolution with a superconducting nanowire single-photon detector
Knowledge about detection latency provides a guideline to reduce the timing jitter of niobium nitride superconducting nanowire single-photon detectors. A timing jitter of 2.6 ps at visible wavelength and 4.3 ps at 1,550 nm is achieved.
- Boris Korzh
- , Qing-Yuan Zhao
- & Karl K. Berggren
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Article |
Silicon Mie resonators for highly directional light emission from monolayer MoS2
Based on a modified Mie scattering theory, several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole in monolayer MoS2 to optical resonances of a silicon nanowire are reported.
- Ahmet Fatih Cihan
- , Alberto G. Curto
- & Mark L. Brongersma
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News & Views |
Highly efficient nanoscale X-ray sources
Irradiating arrays of metal nanowires with intense femtosecond laser pulses produces high-brightness picosecond X-ray pulses. By specifically tailoring the plasma properties, up to 20% conversion efficiency of optical light into X-rays can be achieved.
- Daniel Rolles
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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 |
Near-unity quantum efficiency of broadband black silicon photodiodes with an induced junction
The combination of black silicon to improve the light absorption and negatively charged alumina to form an induced collecting junction characterizes a photodiode with external quantum efficiency above 96% between 250 nm and 950 nm.
- Mikko A. Juntunen
- , Juha Heinonen
- & Hele Savin
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News & Views |
An ultrafast plasmonic tuning knob
Near- and mid-infrared plasmonics are exciting research areas with applications in nanoscale energy concentration, sensing or ultrafast switching for telecommunication. Now, a new efficient way to manipulate plasmon resonances in semiconductor nanoarrays at ultrafast timescales has been found.
- Martin Wagner
- & Mengkun Liu
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Article |
Ultrafast switching of tunable infrared plasmons in indium tin oxide nanorod arrays with large absolute amplitude
Ultrafast plasmon modulation has been realized in the near- to mid-infrared range by intraband pumping of indium tin oxide nanorod arrays.
- Peijun Guo
- , Richard D. Schaller
- & Robert P. H. Chang
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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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Letter |
Multiphoton absorption in amyloid protein fibres
Two-, three- and higher multiphoton absorption processes are shown to occur in amyloid protein fibres, which are thought to play a role in various diseases, including Alzheimer's and Parkinson's diseases. The nonlinear optical behaviour of such proteins may also be useful for fabricating photonics devices.
- Piotr Hanczyc
- , Marek Samoc
- & Bengt Norden
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Article |
Elastomeric polymer light-emitting devices and displays
A stretchable polymer LED is fabricated that is capable of emitting light when subjected to strains as large as 120%. A prototype 5 × 5 pixel monochrome display based on an array of these LEDs is demonstrated.
- Jiajie Liang
- , Lu Li
- & Qibing Pei
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Article |
Mesoscopic light transport by very strong collective multiple scattering in nanowire mats
Researchers report that light flow is strongly affected by mesoscopic interference in semiconducting nanowire mats in which the scattering length is much shorter than the wavelength of light. By measuring intensity distributions, fluctuations and correlations, they obtain evidence of low conductance and signatures of the onset of Anderson localization.
- Tom Strudley
- , Tilman Zehender
- & Otto L. Muskens
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Article |
Single-nanowire solar cells beyond the Shockley–Queisser limit
The light concentrating properties of single p-i-n GaAs nanowires are shown to result in far greater photocurrent densities than expected under one sun illumination. The results suggest that such cells could in principle operate with power conversion efficiencies beyond the Shockley–Queisser limit.
- Peter Krogstrup
- , Henrik Ingerslev Jørgensen
- & Anna Fontcuberta i Morral
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Letter |
Rewritable nanoscale oxide photodetector
Researchers report rewritable nanoscale photodetectors that exploit 2–3 nm nanowire junctions. Large electromagnetic fields in the gap region aid the detector response, which is electric-field-tunable and spans the visible to near-infrared regime.
- Patrick Irvin
- , Yanjun Ma
- & Jeremy Levy
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News & Views |
Towards efficient quantum sources
On-demand single-photon sources with high efficiency are required to realize many of the applications of quantum optics. By exploiting photonic mode transformation in a tapered nanowire, researchers have created a source that has an unprecedented extraction efficiency over an extremely broad spectral range.
- Stefan Strauf
Extreme ionization of heavy atoms in solid-density plasmas by relativistic second-harmonic laser pulses
Nanowire detectors
Mobile high-Q nanoresonators
Black metals
New regimes for nanoshaping
Investigating plasmonic damping