Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Ilya P. Radko"'
Autor:
Lukáš Lachman, Ilya P. Radko, Maxime Bergamin, Ulrik L. Andersen, Alexander Huck, Radim Filip
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033254 (2024)
Emitters of single photons are essential resources for emerging quantum technologies and developed within different platforms including nonlinear optics and atomic and solid-state systems. The energy-level structures of emission processes are critica
Externí odkaz:
https://doaj.org/article/a39f3f4a8b174a2c8fa932077b5dfe3b
Autor:
Alexander Huck, Nicole Raatz, Ilya P. Radko, Ulrik L. Andersen, Niels Møller Israelsen, Jan Meijer
Publikováno v:
Israelsen, N M, Radko, I P, Raatz, N, Meijer, J, Andersen, U L & Huck, A 2021, ' Nitrogen-vacancy defect emission spectra in the vicinity of an adjustable silver mirror ', Materials for Quantum Technology, vol. 1, no. 1, 015002 . https://doi.org/10.1088/2633-4356/abaa2f
Optical emitters of quantum radiation in the solid state are important building blocks for emerging technologies making use of the laws of quantum mechanics. The efficiency of photon extraction from the host material is low for many solid-state syste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71a888555e67648e206536635061b222
https://orbit.dtu.dk/en/publications/fd44db8a-9a21-44bf-a883-be170b4cab55
https://orbit.dtu.dk/en/publications/fd44db8a-9a21-44bf-a883-be170b4cab55
Autor:
N. V. Kryzhanovskaya, Ilya P. Radko, Alexander Huck, N. V. Sibirev, Anna S. Dragunova, Dmitrii V. Viazmitinov, Kresten Yvind, Yury Berdnikov, Elizaveta Semenova, Shima Kadkhodazadeh
Publikováno v:
Viazmitinov, D V, Berdnikov, Y, Kadkhodazadeh, S, Dragunova, A, Sibirev, N, Kryzhanovskaya, N, Radko, I, Huck, A, Yvind, K & Semenova, E 2020, ' Monolithic integration of InP on Si by molten alloy driven selective area epitaxial growth ', Nanoscale, vol. 12, no. 46, pp. 23780-23788 . https://doi.org/10.1039/D0NR05779G
We report a new approach for monolithic integration of III–V materials into silicon, based on selective area growth and driven by a molten alloy in metal–organic vapor epitaxy. Our method includes elements of both selective area and droplet-media
Autor:
Rasmus Høy Jensen, Yannik Fontana, Ulrik L. Andersen, Olivier Gobron, Alexander Huck, Erika Janitz, Lilian Childress, Ruffin E. Evans, Yi He, Ilya P. Radko, Cesar Daniel Rodriguez Rosenblueth, Mihir K. Bhaskar
Publikováno v:
Erika Janitz
Jensen, R H, Janitz, E, Fontana, Y L, He, Y, Gobron, O, Radko, I P, Bhaskar, M, Evans, R, Rodríguez Rosenbluth, C D, Childress, L, Huck, A & Andersen, U L 2020, ' Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane ', Physical Review Applied, vol. 13, 064016 . https://doi.org/10.1103/PhysRevApplied.13.064016
Jensen, R H, Janitz, E, Fontana, Y L, He, Y, Gobron, O, Radko, I P, Bhaskar, M, Evans, R, Rodríguez Rosenbluth, C D, Childress, L, Huck, A & Andersen, U L 2020, ' Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane ', Physical Review Applied, vol. 13, 064016 . https://doi.org/10.1103/PhysRevApplied.13.064016
The nitrogen-vacancy center in diamond has been explored extensively as a light-matter interface for quantum information applications, however it is limited by low coherent photon emission and spectral instability. Here, we present a promising interf
Publikováno v:
Boll, M K, Radko, I P, Huck, A & Andersen, U L 2020, ' Photophysics of quantum emitters in hexagonal boron-nitride nano-flakes ', Optics Express, vol. 28, no. 5, pp. 7475-7487 . https://doi.org/10.1364/oe.386629
Quantum emitters in hexagonal boron nitride (hBN) have attracted significant interest due to their bright and narrowband photon emission even at room temperature. The wide-bandgap two-dimensional material incorporates crystal defects of yet-unknown c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7abca9794b1d0b06a2ac1694724c8234
https://orbit.dtu.dk/en/publications/6756e50c-4c34-49f7-8540-115ff1d8e1b4
https://orbit.dtu.dk/en/publications/6756e50c-4c34-49f7-8540-115ff1d8e1b4
Autor:
Ulrik L. Andersen, Haitham A. R. El-Ella, Kristian Hagsted Rasmussen, Ilya P. Radko, Alexander Huck
Publikováno v:
El-Ella, H A R, Rasmussen, K H, Huck, A, Andersen, U L & Radko, I P 2020, ' Observation of the magneto-optic Voigt effect in a paramagnetic diamond membrane ', Physical Review B, vol. 101, no. 13, 134402 . https://doi.org/10.1103/PhysRevB.101.134402
The magneto-optic Voigt effect is observed in a synthetic diamond membrane with a substitutional nitrogen defect concentration in the order of 200 ppm and a nitrogen-vacancy defect sub-ensemble generated through neutron irradiation and annealing. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7be59edfb62d99761e3f9f9749802e46
http://arxiv.org/abs/1909.13596
http://arxiv.org/abs/1909.13596
Publikováno v:
Symposium Latsis 2019 on Diamond Photonics - Physics, Technologies and Applications.
We show that changing the spontaneous emission rate of nitrogen-vacancy (NV) centers in diamond through Purcell enhancement can modify the optical readout signal-to-noise ratio for electron spins. We study the effect experimentally with single NV cen
Publikováno v:
Scientific Reports
Pors, A L, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448
Pors, A, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448
Pors, A L, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448
Pors, A, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448
Random-phase metasurfaces, in which the constituents scatter light with random phases, have the property that an incident plane wave will diffusely scatter, hereby leading to a complex far-field response that is most suitably described by statistical
Publikováno v:
Radko, I, Bozhevolnyi, S I & Grigorenko, A N 2016, ' Maximum modulation of plasmon-guided modes by graphene gating ', Optics Express, vol. 24, no. 8, pp. 8266-8279 . https://doi.org/10.1364/OE.24.008266
Radko, I P, Bozhevolnyi, S I & Grigorenko, A N 2016, ' Maximum modulation of plasmon-guided modes by graphene gating ', Optics Express, vol. 24, no. 8, pp. 8266-8279 . https://doi.org/10.1364/OE.24.008266
Radko, I P, Bozhevolnyi, S I & Grigorenko, A N 2016, ' Maximum modulation of plasmon-guided modes by graphene gating ', Optics Express, vol. 24, no. 8, pp. 8266-8279 . https://doi.org/10.1364/OE.24.008266
The potential of graphene in plasmonic electro-optical waveguide modulators has been investigated in detail by finite-element method modelling of various widely used plasmonic waveguiding configurations. We estimated the maximum possible modulation d
Autor:
Ilya P. Radko, Gregory Auton, Zhanghua Han, Alexander N. Grigorenko, Benjamin D. Thackray, Sergey I. Bozhevolnyi, D. E. Aznakayeva, Owen P. Marshall, D. Ansell, Francisco J. Rodriguez, Philip A. Thomas
Publikováno v:
Ansell, D, Radko, I P, Han, Z, Rodriguez, F J, Bozhevolnyi, S I & Grigorenko, A N 2016, Hybrid grapheme plasmonic waveguide modulators . in A V Kabashin, D B Geohegan & J J Dubowski (eds), Synthesis and Photonics of Nanoscale Materials XIII ., 97370B, SPIE-International Society for Optical Engineering, S P I E-International Society for Optical Engineering. Proceedings, vol. 9737, SPIE Photonics West, San Francisco, California, United States, 13/02/2016 . https://doi.org/10.1117/12.2216521
The unique optical and electronic properties of graphene allow one to realize active optical devices. While several types of graphene-based photonic modulators have already been demonstrated, the potential of combining the versatility of graphene wit