Zobrazeno 1 - 10
of 1 067
pro vyhledávání: '"Majumdar, A. S."'
States with negative Wigner function, a significant subclass of non-classical states, serve as a valuable resource for various quantum information processing tasks. Here, we provide a criterion for detecting such quantum states exhibiting negative Wi
Externí odkaz:
http://arxiv.org/abs/2407.12116
Finding a set of empirical criteria fulfilled by any theory that satisfies the generalized notion of noncontextuality is a challenging task of both operational and foundational importance. The conventional approach of deriving facet inequalities from
Externí odkaz:
http://arxiv.org/abs/2406.09111
In this study, we revisit the Fulling-Davies-Unruh effect in the context of two-level single and entangled atomic systems that are static in a thermal bath. We consider the interaction between the systems and a massless scalar field, covering the sce
Externí odkaz:
http://arxiv.org/abs/2402.03351
Measurement incompatibility has proved to be an important resource for information-processing tasks. In this work, we analyze various levels of incompatibility of measurement sets. We provide operational classification of measurement incompatibility
Externí odkaz:
http://arxiv.org/abs/2401.01236
Publikováno v:
Quantum Inf Process 23, 170 (2024)
Device-independent quantum secure direct communication (DI-QSDC) is a promising primitive in quantum cryptography aimed towards addressing the problems of device imperfections and key management. However, significant effort is required to tackle prac
Externí odkaz:
http://arxiv.org/abs/2312.03040
We explore the 21-cm signal in our Universe containing inhomogeneous matter distribution at considerably large scales. Employing Buchert's averaging procedure in the context of a model of spacetime with multiple inhomogeneous domains, we evaluate the
Externí odkaz:
http://arxiv.org/abs/2310.18757
Schr\"odinger cat states, which are superpositions of macroscopically distinct states, are potentially critical resources for upcoming quantum information technologies. In this paper, we introduce a scheme to generate entangled Schr\"odinger cat stat
Externí odkaz:
http://arxiv.org/abs/2309.16895
Publikováno v:
Phys. Rev. A 109, 062213 (2024)
The role of CP-indivisibility and incompatibility as valuable resources for various information-theoretic tasks is widely acknowledged. This study delves into the intricate relationship between CP-divisibility and channel compatibility. Our investiga
Externí odkaz:
http://arxiv.org/abs/2309.10806
Publikováno v:
JCAP08(2023)064
We formulate a model of spacetime with inhomogeneous matter distribution in multiple domains. In the context of the backreaction framework using Buchert's averaging procedure, we evaluate the effect of backreaction due to the inhomogeneities on the l
Externí odkaz:
http://arxiv.org/abs/2305.17616
Publikováno v:
Phys. Rev. D 108, 085018 (2023)
We investigate the transition rates of uniformly accelerated two-level single and entangled atomic systems in empty space as well as inside a cavity. We take into account the interaction between the systems and a massless scalar field from the viewpo
Externí odkaz:
http://arxiv.org/abs/2305.08867