Zobrazeno 1 - 10
of 807
pro vyhledávání: '"Sharma Gautam"'
Publikováno v:
New J. Phys. 26 103028 (2024)
Demonstrating contextual correlations in quantum theory through the violation of a non-contextuality inequality necessarily needs some ``contexts" and thus assumes some compatibility relations between the measurements. As a result, any self-testing p
Externí odkaz:
http://arxiv.org/abs/2404.02709
Device-independent certification of quantum states allows the characterization of quantum states present inside a device by making minimal physical assumptions. A major problem in this regard is to certify quantum states using minimal resources. In t
Externí odkaz:
http://arxiv.org/abs/2402.18522
The notions of predictability and visibility are essential in the mathematical formulation of wave particle duality. The work of Jakob and Bergou [Phys. Rev. A 76, 052107] generalises these notions for higher-dimensional quantum systems, which were i
Externí odkaz:
http://arxiv.org/abs/2401.01235
Publikováno v:
Phys. Rev. A 110, 022408 (2024)
Self-testing of quantum devices based on observed measurement statistics is a method to certify quantum systems using minimal resources. In Ref. [Phys. Rev. \textbf{A} 101, 032106 (2020)], a scheme based on observing measurement statistics that demon
Externí odkaz:
http://arxiv.org/abs/2307.06710
Measurement incompatibility and the negativity of quasiprobability distribution functions are well-known non-classical aspects of quantum systems. Both of them are widely accepted resources in quantum information processing. We acquaint an approach t
Externí odkaz:
http://arxiv.org/abs/2306.07917
Autor:
Sharma, Gautam
Complementarity polytope is a geometric structure that exists in N2-1 dimensional space for an N dimensional Hilbert space. The existence of N + 1 mutually unbiased bases(MUBs) is possible, if such a polytope can be shown to be a subset of density ma
Externí odkaz:
http://arxiv.org/abs/2109.00507
Autor:
Sharma, Gautam, Sazim, Sk
Exploiting the geometric nature of statistical divergences, we devise a way to define associated induced uncertainty measures for discrete and finite probability distributions. We also report new uncertainty measures and discuss their properties. Fur
Externí odkaz:
http://arxiv.org/abs/2106.14874
Publikováno v:
Phys. Rev. A 104, 032225 (2021)
A beautiful idea about the incompatibility of Physical Context(IPC) was introduced in Phys. Rev. A 102, 050201(R) (2020). Here, a context is defined as a set of a quantum state and two sharp rank-one measurements, and the incompatibility of physical
Externí odkaz:
http://arxiv.org/abs/2102.07732
Publikováno v:
Phys. Scr. 99 045105 (2024)
We study an analogous Bloch sphere representation of higher-level quantum systems using the Heisenberg-Weyl operator basis. We introduce a parametrization method that will allow us to identify a real-valued Bloch vector for an arbitrary density opera
Externí odkaz:
http://arxiv.org/abs/2101.06408
Publikováno v:
Quantum Information Processing, 21, 48 (2022)
Quantum measurement not only can destroy coherence but also can create it. Here, we estimate the maximum amount of coherence, one can create under a complete non-selective measurement process. For our analysis, we consider projective as well as POVM
Externí odkaz:
http://arxiv.org/abs/2004.10875