Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Pravin Vaity"'
Autor:
Anju Rani, Pooja Chandravanshi, Jayanth Ramakrishnan, Pravin Vaity, P. Madhusudhan, Tanya Sharma, Pranav Bhardwaj, Ayan Biswas, R.P. Singh
Publikováno v:
Physics Open, Vol 17, Iss , Pp 100162- (2023)
Quantum Key Distribution (QKD) offers unconditional security in principle. Many QKD protocols have been proposed and demonstrated to ensure secure communication between two authenticated users. Continuous variable (CV) QKD offers many advantages over
Externí odkaz:
https://doaj.org/article/b5445d244c3344518d361daad0d26d26
Autor:
Pravin Vaity, Harshvardhan Gupta, Abhinav Kala, S. Dutta Gupta, Yuri S. Kivshar, Vladimir R. Tuz, Venu Gopal Achanta
Publikováno v:
Advanced Photonics Research, Vol 3, Iss 2, Pp n/a-n/a (2022)
A new property of the trapped mode (bound state in the continuum, BIC) supported by a dielectric resonant metasurface, which changes its lattice symmetry, is uncovered. The transformation of a metasurface composed of identical nanodisk resonators int
Externí odkaz:
https://doaj.org/article/5319142155ba4e29bf86c6a08be55934
We study coupling of leaky Berreman modes in polar dielectric films (SiO2) through a thin metallic layer (gold) and show the familiar signatures of normal mode splitting. Due to very large negative real part of the dielectric function of gold, the sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d0db6389557e5645877669ec836d627
http://arxiv.org/abs/2106.06725
http://arxiv.org/abs/2106.06725
Autor:
Rishav Sagar, J. A. Dharmadhikari, Venu Gopal Achanta, S. Dutta Gupta, Pravin Vaity, Aditya K. Dharmadhikari
Publikováno v:
Optics letters. 46(2)
All-dielectric metamaterials conforming to an optical reflectionless potential (ORP) offer broadband, omni-directional suppression of reflection. Though they are predicted to possess broadband negative group velocity dispersion (GVD), ultrashort puls
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f15fe28c196cdb15bf584646d038f7f
https://pubmed.ncbi.nlm.nih.gov/33448983
https://pubmed.ncbi.nlm.nih.gov/33448983
Autor:
Venu Gopal Achanta, Pravin Vaity
Publikováno v:
Conference on Lasers and Electro-Optics.
We investigated the angular spectrum of bound state in the continuum (BIC) associated with topological charge and present an empirical tool to characterize BIC. While near-field confirms Bessel-Gaussian distribution, far-field is a perfect vortex.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::796411081bd5f4023e346ec36146f5b4
https://doi.org/10.1364/cleo_at.2021.jw1a.177
https://doi.org/10.1364/cleo_at.2021.jw1a.177
Autor:
Yuri S. Kivshar, Vladimir R. Tuz, Pravin Vaity, Venu Gopal Achanta, S. Dutta Gupta, Abhinav Kala, Harshvardhan Gupta
Publikováno v:
Advanced Photonics Research, Vol 3, Iss 2, Pp n/a-n/a (2022)
A new property of the trapped mode (bound state in the continuum, BIC) supported by a dielectric resonant metasurface, which changes its lattice symmetry, is uncovered. The transformation of a metasurface composed of identical nanodisk resonators int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa229a875fa514afb60dd8df325e0eb2
https://doi.org/10.1002/adpr.202100144
https://doi.org/10.1002/adpr.202100144
Autor:
Stephane Chatigny, Younes Messaddeq, Lixian Wang, Sophie LaRochelle, Leslie A. Rusch, Pravin Vaity
Publikováno v:
Journal of Lightwave Technology
The orbital-angular-momentum (OAM) modes in optical fibers have polarization mode dispersion (PMD) properties similar to those of single-mode fibers (SMFs). The + l and − l order OAM modes supported by the same fiber vector modes undergo random cro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7debe55110d64b0584b2983c5317f80c
https://doi.org/10.1109/jlt.2015.2506461
https://doi.org/10.1109/jlt.2015.2506461
Publikováno v:
Advanced Optical Materials. 8:2000368
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfdf8001a59ad1789030e4cf69081756
https://doi.org/10.1002/adom.202000368
https://doi.org/10.1002/adom.202000368
We numerically and experimentally show that all photons generated by spontaneous parametric down-conversion (SPDC) follow a transverse amplitude similar to that of the pump. This amplitude transfer from pump to SPDC is revealed in the Fourier image p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eae7789c51acbf3722859c93816d814c
Publikováno v:
Journal of Modern Optics. 60:1696-1700
The stability of higher charge optical vortices generated with a spatial light modulator is investigated. It is observed that higher charge vortices split into an array of unit charge vortices with the tilting of a spatial light modulator. An interfe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0c711aeb35758b4e2e46d0f156fe853
https://doi.org/10.1080/09500340.2013.852696
https://doi.org/10.1080/09500340.2013.852696