Sequential measurement-device-independent entanglement detection by multiple observers

C Srivastava, S Mal, A Sen, U Sen - Physical Review A, 2021 - APS
Violation of a Bell inequality certifies that the underlying state must be entangled in a device-
independent way, although there exist some entangled states which do not violate such an …

Efficient nonlinear witnessing of non–absolutely separable states with lossy detectors

A Patra, S Mal, A Sen - Physical Review A, 2021 - APS
Entangled states are undoubtedly an integral part of various quantum information
processing tasks. On the other hand, absolutely separable states which cannot be made …

Noisy quantum input loophole in measurement-device-independent entanglement witnesses

K Sen, C Srivastava, S Mal, A Sen, U Sen - Physical Review A, 2021 - APS
Entanglement witnesses form an effective method to locally detect entanglement in the
laboratory without having the prior knowledge of the full density matrix. However, separable …

Entanglement Detection: A Scoping Review

AA Zhahir, SM Mohd, MIM Shuhud… - … in Applied Sciences …, 2024 - semarakilmu.com.my
Quantum entanglement is a critical physical process in quantum mechanics and quantum
information theory. It is a required process in quantum computing, quantum teleportation …

Effects of detection loophole on rival entanglement attestation techniques

P Chaki, K Sen, U Sen - arXiv preprint arXiv:2305.00488, 2023 - arxiv.org
Loopholes present in an experimental set-up can significantly affect the reliability of
entanglement detection. We discuss two methods for detection of entanglement: one is by …

Measurement-device-independent nonlinear entanglement witnesses

K Sen, C Srivastava, U Sen - Journal of Physics A: Mathematical …, 2023 - iopscience.iop.org
Entanglement witnesses (EWs) are one of the most effective methods to detect
entanglement. It is known that nonlinear EW provide better entanglement detection than …

Closing loopholes of measurement-device-independent nonlinear entanglement witnesses

K Sen, C Srivastava, U Sen - Physical Review A, 2023 - APS
The concept of entanglement witnesses forms a useful technique to detect entanglement in
realistic quantum devices. Measurement-device-independent nonlinear entanglement …