Entanglement detection in arbitrary-dimensional bipartite quantum systems through partial realigned moments

S Aggarwal, S Adhikari, AS Majumdar - Physical Review A, 2024 - APS
Detection of entanglement through partial knowledge of the quantum state is a challenge to
implement efficiently. Here we propose a separability criterion for detecting bipartite …

Quantum precision thermometry with weak measurements

AK Pati, C Mukhopadhyay, S Chakraborty, S Ghosh - Physical Review A, 2020 - APS
As the minituarization of electronic devices, which are sensitive to temperature, grows
apace, sensing of temperature with ever smaller probes is more important than ever …

Detecting entanglement harnessing Lindblad structure

V Chimalgi, B Bhattacharya, S Goswami… - Physica …, 2023 - iopscience.iop.org
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 …

Measurement of the concurrence of arbitrary two-photon six-qubit hyperentangled state

S Zhu, YC Liu, BK Zhao, L Zhou, W Zhong… - Europhysics …, 2020 - iopscience.iop.org
Hyperentanglement is the quantum system entangled in several degrees of freedom (DOFs),
which has attracted extensive attention in quantum communication. In the practical …

Generating and detecting bound entanglement in two-qutrits using a family of indecomposable positive maps

B Bhattacharya, S Goswami, R Mundra… - Journal of Physics …, 2021 - iopscience.iop.org
The problem of bound entanglement detection is a challenging aspect of quantum
information theory for higher dimensional systems. Here, we propose an indecomposable …

Experimental investigation of the uncertainty relation in pre-and postselected systems

Y Zhang, X Che, Y Wei, R Tian, Y Li, M Zhang… - ar** a general theory
of quantum entanglement. In particular, criteria to decide whether a given quantum state is …

On the characterization of Schmidt number breaking and annihilating channels

B Mallick, N Ganguly, AS Majumdar - ar** channel: the two-qubit case
S Goswami, S Ghosh… - Journal of Physics A …, 2021 - iopscience.iop.org
Any kind of quantum resource useful in different information processing tasks is vulnerable
to several types of environmental noise. Here we study the behaviour of quantum …

Uncertainty relations in pre-and postselected systems

Sahil, Sohail, S Ghosh - Physical Review A, 2023 - APS
In this work, we derive Robertson-Heisenberg–type uncertainty relation for two incompatible
observables in a pre-and postselected (PPS) system. The newly defined standard deviation …