Measurement incompatibility and quantum advantage in communication

D Saha, D Das, AK Das, B Bhattacharya, AS Majumdar - Physical Review A, 2023 - APS
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 …

Self-testing of any pure entangled state with the minimal number of measurements and optimal randomness certification in a one-sided device-independent scenario

S Sarkar, JJ Borkała, C Jebarathinam, O Makuta… - Physical Review …, 2023 - APS
Certification of quantum systems and their properties has become a field of intensive study.
Here, taking advantage of the one-sided device-independent (1SDI) scenario (also known …

Towards minimal self-testing of qubit states and measurements in prepare-and-measure scenarios

G Drótos, KF Pál, A Taoutioui, T Vértesi - New Journal of Physics, 2024 - iopscience.iop.org
Self-testing is a promising approach to certifying quantum states or measurements.
Originally, it relied solely on the outcome statistics of the measurements involved in a device …

Distrustful quantum steering

S Sarkar - Physical Review A, 2023 - APS
Quantum steering is an asymmetric form of quantum nonlocality where one can trust the
measurements of one of the parties. In this work, inspired by practical considerations, we …

Certification of the maximally entangled state using nonprojective measurements

S Sarkar - Physical Review A, 2023 - APS
In recent times, device-independent certification of quantum states has been one of the
intensively studied areas in quantum information. However, all such schemes utilize …

All real projective measurements can be self-tested

R Chen, L Mančinska, J Volčič - Nature Physics, 2024 - nature.com
Entangled quantum systems feature non-local correlations that are stronger than could be
realized classically. This property makes it possible to perform self-testing, the strongest form …

Self-testing of semisymmetric informationally complete measurements in a qubit prepare-and-measure scenario

G Drótos, KF Pál, T Vértesi - Physical Review A, 2024 - APS
Self-testing is a powerful method for certifying quantum systems. Initially proposed in the
device-independent (DI) setting, self-testing has since been relaxed to the semi-device …

Quantum steering without free will

S Sarkar - arXiv preprint arXiv:2307.08797, 2023 - arxiv.org
Quantum networks with independent sources allow the observation of quantum nonlocality
without inputs. Consequently, the incompatibility of measurements is not a necessity for …

Network quantum steering enables randomness certification without seed randomness

S Sarkar - Quantum, 2024 - quantum-journal.org
Quantum networks with multiple sources allow the observation of quantum nonlocality
without inputs. Consequently, the incompatibility of measurements is not a necessity for …

Robust certification of arbitrary outcome quantum measurements from temporal correlations

D Das, AG Maity, D Saha, AS Majumdar - Quantum, 2022 - quantum-journal.org
Certification of quantum devices received from unknown providers is a primary requirement
before utilizing the devices for any information processing task. Here, we establish a …