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Metamaterials for Information- and Computer Technologies of the Future by viakhnine — last modified April 16, 2013 - 16:39
For critical advances in optical and quantum computing, a stable, efficient, nano-sized source of single photons is required. Diamond nano-crystals with embedded Nitrogen-Vacancy crystal-lattice defects (NV-centers) are recognized as strong candidates to fulfill this need. A promising way of increasing the rate of single-photon emission by NV-centers is to couple them with a hyperbolic metamaterial (HMM) which, due to its high photonic density of states, enhances the interaction of NV-centers with light. Nano-antennas and nano-waveguides will help to effectively collect the emitted photons, route them with nano-meter precision, and feed them into optical communication channels.
Photons on demand by viakhnine — last modified September 07, 2013 - 11:04
A recently established R&D Company - Photonic Nano-Meta Technologies, LLC (PNMT) - is developing a single-photon source for applications in biology, spectroscopy, materials science, and quantum information processing. Certain key sub-tasks of the project (such as development of a prototype single-photon emission and detection system) have now been accomplished. PNMT invites laser manufacturers for collaboration in development of a commercial suite of optical instruments that will consist of a pulsed laser, a single-photon generator, and a single-photon detector.
CMOS-compatible, plasmonic-metamaterial-enhanced single-photon source by viakhnine — last modified April 11, 2014 - 10:45
The techniques for separating single diamond nano-crystals containing a single NV-center have been developed. It was experimentally established that such systems produce fluxes of uncorrelated (single) photons. It was also shown that positioning such a single-photon source close to the surface of a hyperbolic metamaterial (HMM) considerably increases its efficiency. The employed HMM contains titanium nitride, TiN, as its plasmonic component. TiN is a CMOS-compatible material, which will allow to manufacture single-photon emitters using standard nanofabrication techniques and will make it easier to integrate them with nanoelectronic components. These results constitute a significant step in development of commercial, CMOS-compatible, efficient single-photon source.
Figure 1. Surface plasmons localized at an isolated nanoparticle. The black arrow indicates the direction of polarization of the incident light (red arrows). The electric field of the light causes separation of positive and negative charges, and the attraction of the charges of opposite signs creates a restoring force, leading to resonant interaction of electron gas with light. by viakhnine — last modified January 26, 2014 - 15:36
Fig_1.gif by viakhnine — last modified January 26, 2014 - 15:38
Fig_2.gif by viakhnine — last modified January 26, 2014 - 15:41
Fig_3.gif by viakhnine — last modified January 26, 2014 - 15:54
Fig_4.gif by viakhnine — last modified January 26, 2014 - 16:05
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[ยทยทยท] by viakhnine — last modified January 17, 2015 - 15:13