Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Nirmalendu Acharyya"'
Publikováno v:
Physical review letters. 127(9)
The SU(N) Yang-Mills matrix model admits self-dual and anti-self-dual instantons. When coupled to N_{f} flavors of massless quarks, the Euclidean Dirac equation in an instanton background has n_{+} positive and n_{-} negative chirality zero modes. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d94b3737bb796a099d266c6b257bd82f
https://pubmed.ncbi.nlm.nih.gov/34506168
https://pubmed.ncbi.nlm.nih.gov/34506168
Publikováno v:
The Journal of Chemical Physics
Bridge-mediated electron transfer (ET) between a donor and an acceptor is prototypical for the description of numerous most important ET scenarios. While multi-step ET and the interplay of sequential and direct superexchange transfer pathways in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b879eb4153319be45733cd21988c96db
Autor:
Elena Martínez, Raquel Obregón, Marcel Dijkstra, M. de Goede, Ling Chang, Sonia M. García-Blanco, Nirmalendu Acharyya, Gregory Kozyreff
Publikováno v:
Dipòsit Digital de la UB
Universidad de Barcelona
Optics express, 29 (1
Optics express, 29(1), 346-358. The Optical Society
Universidad de Barcelona
Optics express, 29 (1
Optics express, 29(1), 346-358. The Optical Society
Self-referenced biosensing based on mode-splitting on a microring resonator is experimentally demonstrated. A Bragg grating integrated on the surface of the ring provides coupling between the clockwise and counterclockwise travelling modes of the pri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f63cd6d259b06da1df0d503caff266d
https://pubmed.ncbi.nlm.nih.gov/33362120
https://pubmed.ncbi.nlm.nih.gov/33362120
Autor:
Gregory Kozyreff, Nirmalendu Acharyya
Publikováno v:
Proceedings of SPIE-The International Society for Optical Engineering, 11364
With the advent of silicon and silicon nitride (Si3N4) whispering gallery mode (WGM) resonators, a high quality factor Q (> 1E6) can be achieved. These high Q cavities provide an ideal platform to study light-matter interactions. However, such high Q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca09a40b77cec0f7d3a33960bd8ecf72
https://doi.org/10.1117/12.2555307
https://doi.org/10.1117/12.2555307
Publikováno v:
The 22nd International Conference on Ultrafast Phenomena 2020.
We numerically investigate the impact of non-diagonal system-bath interaction on real-time dissipative dynamics of the Spin-Boson model. For Ohmic environments, a novel class of coherences emerges that induce longtime entanglement between system and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71d5fc20b274fab87a8b2f3fba06a43f
https://doi.org/10.1364/up.2020.tu4a.35
https://doi.org/10.1364/up.2020.tu4a.35
Publikováno v:
Optics express, 27 (24
Whispering gallery mode resonators hold great promises as very sensitive detectors, with a wide range of applications, notably as biosensors. However, in order to monitor the fine variations in their resonances, a costly and bulky apparatus is requir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10004cbc78d99997646519bf4a91cd41
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/295911
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/295911
Autor:
Gregory Kozyreff, Nirmalendu Acharyya
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Thanks to progress in fabrication techniques, quality factors (Q) of whispering gallery mode (WGM) resonators are now well above one million with materials that are relevant to Photonic Integrated Circuits (PIC) [1,2]. However, so far only cavities w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53f93194e8a71c02874ff31b2440dd9f
https://doi.org/10.1109/cleoe-eqec.2019.8871651
https://doi.org/10.1109/cleoe-eqec.2019.8871651
Autor:
Nirmalendu Acharyya, Gregory Kozyreff
Publikováno v:
Physical Review Applied
Physical review applied, 8
Physical review applied, 8
We study the optical transmission of a waveguide that is side coupled to a high-Q circular microresonator. The coupling is critical if the intrinsic resonator losses equal the coupling losses to the waveguide. When this happens, the transmittance of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2757b037c4f4dab939c23a432b64a47
https://doi.org/10.1103/physrevapplied.8.034029
https://doi.org/10.1103/physrevapplied.8.034029
In a matrix model of pure $SU(2)$ Yang-Mills theory, boundaries emerge in the space of $\textrm{Mat}_{3}(\mathbb{R})$ and the Hamiltonian requires boundary conditions. We show the existence of edge localized glueball states which can have negative en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66e75b7485564427de72fc67cc1f6c2f
Autor:
Gregory Kozyreff, Nirmalendu Acharyya
Publikováno v:
Optics express, 24 (25
Optics Express
Optics Express
We derive formulas for whispering gallery mode resonances and bending losses in infinite cylindrical dielectric shells and sets of concentric cylindrical shells. The formulas also apply to spherical shells and to sections of bent waveguides. The deri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d31d965137f16f073abd4d1dc7455c7d
http://arxiv.org/abs/1609.07010
http://arxiv.org/abs/1609.07010