Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Jebaratnam, C."'
Autor:
Bian, Zhihao, Majumdar, A. S., Jebaratnam, C., Wang, Kunkun, Xiao, Lei, Zhan, Xiang, Zhang, Yongsheng, Xue, Peng
Publikováno v:
Phys. Rev. A 101, 020301(R) (2020)
We demonstrate one-sided device-independent self-testing of any pure entangled two-qubit state based on a fine-grained steering inequality. The maximum violation of a fine-grained steering inequality can be used to witness certain steerable correlati
Externí odkaz:
http://arxiv.org/abs/2001.10207
Autor:
Goswami, Suchetana, Bhattacharya, Bihalan, Das, Debarshi, Sasmal, Souradeep, Jebaratnam, C., Majumdar, A. S.
Publikováno v:
Phys. Rev. A 98, 022311 (2018)
We consider the problem of $1$-sided device-independent self-testing of any pure entangled two-qubit state based on steering inequalities which certify the presence of quantum steering. In particular, we note that in the $2-2-2$ steering scenario (in
Externí odkaz:
http://arxiv.org/abs/1803.03213
Autor:
Das, Debarshi, Jebaratnam, C., Bhattacharya, Bihalan, Mukherjee, Amit, Bhattacharya, Some Sankar, Roy, Arup
Publikováno v:
Annals of Physics, 398, 55-79 (2018)
Quantumness for a bipartite unsteerable quantum correlation is operationally characterized by the notion of super-unsteerability. Super-unsteerability refers to the requirement of a larger dimension of the random variable that the steering party has
Externí odkaz:
http://arxiv.org/abs/1706.08415
Autor:
Das, Debarshi, Bhattacharya, Bihalan, Datta, Chandan, Roy, Arup, Jebaratnam, C., Majumdar, A. S., Srikanth, R.
Publikováno v:
Phys. Rev. A 97, 062335 (2018)
Recently, the quantumness of local correlations arising from separable states in the context of a Bell scenario has been studied and linked with superlocality [Phys. Rev. A {\bf 95}, 032120 (2017)]. Here we investigate the quantumness of unsteerable
Externí odkaz:
http://arxiv.org/abs/1705.05663
Autor:
Jebaratnam, C., Das, Debarshi, Roy, Arup, Mukherjee, Amit, Bhattacharya, Some Sankar, Bhattacharya, Bihalan, Riccardi, Alberto, Sarkar, Debasis
Publikováno v:
Phys. Rev. A 98, 022101 (2018)
In the present work, we study tripartite quantum steering of quantum correlations arising from two local dichotomic measurements on each side in the two types of partially device-independent scenarios: $1$-sided device-independent scenario where one
Externí odkaz:
http://arxiv.org/abs/1704.08162
Publikováno v:
Phys. Rev. A 97, 022110 (2018)
Einstein-Podolsky-Rosen steering is a form of quantum nonlocality which is weaker than Bell nonlocality, but stronger than entanglement. Here we present a method to check Einstein-Podolsky-Rosen steering in the scenario where the steering party perfo
Externí odkaz:
http://arxiv.org/abs/1702.00672
Autor:
Bhattacharya, Some Sankar, Paul, Biswajit, Roy, Arup, Mukherjee, Amit, Jebaratnam, C., Banik, Manik
Publikováno v:
Phys. Rev. A 95, 042130 (2017)
We consider the problem of determining the presence of genuine multipartite entanglement through the violation of Mermin's Bell-type inequality (MI). Though the violation of MI cannot certify the presence of genuine nonlocality, but can certify genui
Externí odkaz:
http://arxiv.org/abs/1701.08253
Publikováno v:
J. Phys. A: Math. Theor. 51 (2018) 365304
For a bipartite local quantum correlation, superlocality refers to the requirement for a larger dimension of the random variable in the classical simulation protocol than that of the quantum states that generate the correlations. In this work, we con
Externí odkaz:
http://arxiv.org/abs/1701.04363
Autor:
Bhattacharya, Some Sankar, Mukherjee, Amit, Roy, Arup, Paul, Biswajit, Mukherjee, Kaushiki, Chakrabarty, Indranil, Jebaratnam, C., Ganguly, Nirman
Steerability is a characteristic nonlocal trait of quantum states lying in between entanglement and Bell nonlocality. A given quantum state is considered to be steerable if it violates a suitably chosen steering inequality. A quantum state which othe
Externí odkaz:
http://arxiv.org/abs/1612.07644
Publikováno v:
Phys. Rev. A 95, 032120 (2017)
Simulating quantum nonlocality and steering requires augmenting pre-shared randomness with non-vanishing communication cost. This prompts the question of how one may provide such an operational characterization for the quantumness of correlations due
Externí odkaz:
http://arxiv.org/abs/1609.08090