Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Kumari, Meenu"'
Autor:
Kumari, Meenu, Alhambra, Álvaro M.
Publikováno v:
Quantum 6, 701 (2022)
The average entanglement entropy (EE) of the energy eigenstates in non-vanishing partitions has been recently proposed as a diagnostic of integrability in quantum many-body systems. For it to be a faithful characterization of quantum integrability, i
Externí odkaz:
http://arxiv.org/abs/2108.09866
Publikováno v:
Phys. Rev. Research 3, 023214 (2021)
We establish a rigorous connection between quantum coherence and quantum chaos by employing coherence measures originating from the resource theory framework as a diagnostic tool for quantum chaos. We quantify this connection at two different levels:
Externí odkaz:
http://arxiv.org/abs/2009.02760
Publikováno v:
Phys. Rev. Research 3, 033134 (2021)
The nonclassicality of simple spin systems as measured by Wigner negativity is studied on a spherical phase space. Several SU(2)-covariant states with common qubit representations are addressed: spin coherent, spin cat (GHZ/N00N), and Dicke ($\textsf
Externí odkaz:
http://arxiv.org/abs/2008.10167
Autor:
Ponnam, Naresh, Kumari, Meenu, Ganesan, Sangeetha, Barik, Satyaprakash, Pattanaik, Madhuri, Adamala, Anil Kumar, VK, Rao, TR, Rupa, B, Varalakshmi, Acharya, Gobinda Chandra
Publikováno v:
In South African Journal of Botany December 2023 163:794-804
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Autor:
Kumari, Meenu, Ghose, Shohini
Publikováno v:
Phys. Rev. A 99, 042311 (2019)
We present a method to calculate an upper bound on the generation of entanglement in any spin system using the Fannes-Audenaert inequality for the von Neumann entropy. Our method not only is useful for efficiently estimating entanglement, but also sh
Externí odkaz:
http://arxiv.org/abs/1806.10545
Autor:
Kumari, Meenu, Ghose, Shohini
Publikováno v:
Phys. Rev. E 97, 052209 (2018)
Quantum-classical correspondence in chaotic systems is a long-standing problem. We describe a method to quantify Bohr's correspondence principle and calculate the size of quantum numbers for which we can expect to observe quantum-classical correspond
Externí odkaz:
http://arxiv.org/abs/1802.04711
Autor:
Kumari, Meenu, Naresh, P., Acharya, G.C., Laxminarayana, K., Singh, H.S., Raghu, B.R., Aghora, T.S.
Publikováno v:
In South African Journal of Botany September 2022 149:189-195
We show that introducing a small uncertainty in the parameters of quantum systems can make the dynamics of these systems robust against perturbations. Concretely, for the case where a system is subject to perturbations due to an environment, we deriv
Externí odkaz:
http://arxiv.org/abs/1711.07906
Publikováno v:
Phys. Rev. A 96, 012128 (2017)
We analyze the connection between Bell inequality violations and symmetric extendibility of quantum states. We prove that 2-qubit reduced states of multiqubit symmetric pure states do not violate the Bell Clauser-Horne-Shimony-Holt (CHSH) inequality.
Externí odkaz:
http://arxiv.org/abs/1704.06516