Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Bhattacharya, Bihalan"'
Completely positive trace preserving maps are widely used in quantum information theory. These are mostly studied using the master equation perspective. A central part in this theory is to study whether a given system of dynamical maps $\{\Lambda_t:
Externí odkaz:
http://arxiv.org/abs/2406.19176
A class of unital qubit maps displaying diagonal unitary and orthogonal symmetries is analyzed. Such maps already found a lot applications in quantum information theory. We provide a complete characterization of this class of maps showing intricate r
Externí odkaz:
http://arxiv.org/abs/2404.10895
The problem of entanglement detection is a long standing problem in quantum information theory. One of the primary procedures of detecting entanglement is to find the suitable positive but non-completely positive maps. Here we try to give a generic p
Externí odkaz:
http://arxiv.org/abs/2210.17204
Publikováno v:
Phys. Rev. A 107, 062210 (2023)
Measurement incompatibility stipulates the existence of quantum measurements that cannot be carried out simultaneously on single systems. We show that the set of input-output probabilities obtained from d-dimensional classical systems assisted with s
Externí odkaz:
http://arxiv.org/abs/2209.14582
Autor:
Chanduka, Sourav, Bhattacharya, Bihalan, Mundra, Rounak, Bhattacharya, Samyadeb, Chakrabarty, Indranil
Publikováno v:
International Journal of Quantum InformationVol. 21, No. 05, 2350025 (2023)
We have established a novel method to detect non-Markovian indivisible quantum channels using structural physical approximation. We have shown that this method can be used to detect eternal non -Markovian operations. We have further established that
Externí odkaz:
http://arxiv.org/abs/2109.02335
Autor:
Bhattacharya, Bihalan, Goswami, Suchetana, Mundra, Rounak, Ganguly, Nirman, Chakrabarty, Indranil, Bhattacharya, Samyadeb, Majumdar, A. S.
Publikováno v:
J. Phys. Commun. 5 065008 (2021)
The problem of bound entanglement detection is a challenging aspect of quantum information theory for higher dimensional systems. Here, we propose an indecomposable positive map for two-qutrit systems, which is shown to generate a class of positive p
Externí odkaz:
http://arxiv.org/abs/2008.12971
We establish a connection between non-Markovianity and negative entropy production rate for various classes of quantum operations. We analyse several aspects of unital and thermal operations in connection with resource theories of purity and thermody
Externí odkaz:
http://arxiv.org/abs/1902.05864
Autor:
Guha, Tamal, Bhattacharya, Bihalan, Das, Debarshi, Bhattacharya, Some Sankar, Mukherjee, Amit, Roy, Arup, Mukherjee, Kaushiki, Ganguly, Nirman, Majumdar, A. S.
Publikováno v:
Quanta , Volume 8 , Page 57, 2019
Environmental interactions are ubiquitous in practical instances of any quantum information processing protocol. The interaction results in depletion of various quantum resources and even complete loss in numerous situations. Nonlocality, which is on
Externí odkaz:
http://arxiv.org/abs/1807.01837
We develop a theory of linear witnesses for detecting non-Markovianity, based on the geometric structure of the set of Choi states for all Markovian evolutions having Lindblad type generators. We show that the set of all such Markovian Choi states fo
Externí odkaz:
http://arxiv.org/abs/1805.11418
Publikováno v:
J. Phys. A: Math. Theor. 54 035302 (2020)
We establish a convex resource theory of non-Markovianity under the constraint of small time intervals within the temporal evolution. We construct the free operations, free states and a generalized bona-fide measure of non-Markovianity. The framework
Externí odkaz:
http://arxiv.org/abs/1803.06881