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pro vyhledávání: '"Stanchev P"'
We introduce a method to enhance the precision and accuracy of Quantum Process Tomography (QPT) by mitigating the errors caused by state preparation and measurement (SPAM), readout and shot noise. Instead of performing QPT solely on a single gate, we
Externí odkaz:
http://arxiv.org/abs/2402.04128
Autor:
Veltchev, Todor V., Girichidis, Philipp, Marinkova, Lyubov, Donkov, Sava, Stanchev, Orlin, Klessen, Ralf S.
We present a numerical study of the evolution of power-law tails (PLTs) in the (column-)density distributions ($N$-PDF, $\rho$-PDF) in contracting star-forming clumps in primordial gas, without and with some initial rotational and/or turbulent suppor
Externí odkaz:
http://arxiv.org/abs/2401.02148
Raman qubits, represented by two ground or metastable quantum states coupled via an intermediate state, hold some advantages over directly coupled qubits, most notably much longer radiative lifetimes, shorter gate duration and lower radiation intensi
Externí odkaz:
http://arxiv.org/abs/2310.04228
Autor:
Ivanov, Stefan, Stanchev, Nikola
It is observed that on a compact almost complex Calabi-Yau with torsion 6-manifold the Nijenhuis tensor is parallel with respect to the torsion connection. If the torsion is closed then the space is a compact generalized gradient Ricci soliton. In th
Externí odkaz:
http://arxiv.org/abs/2307.05001
Autor:
Ivanov, Stefan, Stanchev, Nikola
Curvature properties of the characteristic connection on an integrable $G_2$ manifold are investigated. We consider integrable $G_2$ manifold of constant type, i.e. the scalar product of the exterior derivative of the $G_2$ form with its Hodge dual i
Externí odkaz:
http://arxiv.org/abs/2307.05619
Autor:
Ivanov, Stefan, Stanchev, Nikola
Curvature properties of a metric connection with totally skew-symmetric torsion are investigated. It is shown that if either the 3-form $T$ is harmonic, $dT=\delta T=0$ or the curvature of the torsion connection $R\in S^2\Lambda^2$ then the scalar cu
Externí odkaz:
http://arxiv.org/abs/2307.03986
Autor:
Irina Lazarkevich, Stephan Engibarov, Simona Mitova, Rumyana Eneva, Tsvetelina Paunova-Krasteva, Dayana Borisova, Emiliya Vacheva, Nikola Stanchev, Steliyana Popova, Yana Gocheva, Maria Gerginova
Publikováno v:
Applied Microbiology, Vol 4, Iss 3, Pp 1396-1410 (2024)
Pseudomonas aeruginosa is a ubiquitous environmental Gram-negative bacterium and also an opportunistic pathogen for both humans and animals, causing acute or chronic infections. It has been frequently detected in healthy and diseased reptiles, more c
Externí odkaz:
https://doaj.org/article/e7505a6f2b624d73ae6609afaef0ed09
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract We introduce a method to enhance the precision and accuracy of Quantum Process Tomography (QPT) by mitigating the errors caused by state preparation and measurement (SPAM), readout and shot noise. Instead of performing QPT solely on a single
Externí odkaz:
https://doaj.org/article/b828de8448144da7b1cdfce996cd77e4
Autor:
Bozhidar Hristov, Daniel Doykov, Desislav Stanchev, Emiliya Nacheva-Georgieva, Krasimir Kraev, Petar Uchikov, Gancho Kostov, Siyana Valova, Eduard Tilkiyan, Katya Doykova, Mladen Doykov
Publikováno v:
Folia Medica, Vol 66, Iss 3, Pp 415-420 (2024)
Bouveret’s syndrome (BS) represents an exceedingly rare clinical entity characterized by gastric outlet obstruction induced by a gallstone passing through a cholecystoduodenal, cholecystogastric or choledochoduodenal fistula and impacting in the du
Externí odkaz:
https://doaj.org/article/f1c190d626f6459e8c89953915a4f9d2
Autor:
Peter Stanchev, Aneta Karaivanova, Yanita Zherkova, Mikaela Stancheva, Jordan Iliev, Desislava Paneva-Marinova, Georgi Simeonov
Publikováno v:
Digital Presentation and Preservation of Cultural and Scientific Heritage, Vol 14 (2024)
The paper gives an overview on the current landscape and the activities on both national and institutional level regarding Open Science, Open Access to scientific information, Open Data, and the Bulgarian Open Science Cloud.
Externí odkaz:
https://doaj.org/article/dfc289d97d1c40f5a9ce2caa728657b3