Two‐Qubit Steerability, Nonlocality, and Average Steered Coherence under Classical Dephasing Channels

AU Rahman, MY Abd‐Rabbou, S Haddadi… - Annalen der …, 2023 - Wiley Online Library
When two qubits are prepared in a mixture of two Bell states and exposed to local
transmission channels, the dynamics of steerability, Bell nonlocality, and average steered …

Experimental hierarchy of the nonclassicality of single-qubit states via potentials for entanglement, steering, and Bell nonlocality

J Kadlec, K Bartkiewicz, A Černoch, K Lemr… - Optics …, 2024 - opg.optica.org
Entanglement potentials are a promising way to quantify the nonclassicality of single-mode
states. They are defined by the amount of entanglement (expressed by, eg, the Wootters …

Unidirectional Gaussian One‐Way Steering

JE Qars - Annalen der Physik, 2022 - Wiley Online Library
Steering is a type of quantum nonlocality that exhibits an inherent asymmetry between two
observers. In a nondegenerate three‐level laser coupled to a two‐mode squeezed vacuum …

Gaussian quantum steering in a nondegenerate three-level laser

B Boukhris, A Tirbiyine, J El Qars - Modern Physics Letters B, 2023 - World Scientific
Steering is a type of nonseparable quantum correlation, where its inherent asymmetric
feature makes it distinct from Bell nonlocality and entanglement. In this paper, we investigate …

Continuous variable quantum teleportation via entangled Gaussian state generated by a linear beam splitter

HS Qureshi, S Ullah, F Ghafoor - Journal of Physics B: Atomic …, 2020 - iopscience.iop.org
We theoretically implement the protocol of continuous variable quantum teleportation
wherein Alice and Bob share a state built by a linear beam splitter as general two-mode …

Time-dependent quantum teleportation via a parametric converter

HS Qureshi, S Ullah, F Ghafoor - Journal of Physics B: Atomic …, 2022 - iopscience.iop.org
Quantum state teleportation is an important protocol that plays a pivotal role in various
quantum information tasks. Here we theoretically investigate quantum state teleportation by …

Generation and control of bipartite entanglement in a correlated spontaneous-emission laser

HS Qureshi, S Ullah, F Ghafoor - Journal of Russian Laser Research, 2021 - Springer
Bipartite quantum entanglement has numerous practical applications in quantum
computation and communication. Here, we study the temporal evolution of bipartite …

Bipartite Gaussian quantum steering, entanglement, and discord and their interconnection via a parametric down-converter

H Sadia Qureshi, S Ullah, F Ghafoor - Applied Optics, 2020 - opg.optica.org
In this study, we quantify quantum steering, quantum entanglement, and quantum discord
and their interconnection using the technique of parametric down-conversion. Initially, two …

Coherence controlled generation of Gaussian quantum discord in a quantum beat laser

HS Qureshi, S Ullah, F Ghafoor - Physica Scripta, 2023 - iopscience.iop.org
Quantum discord, an appropriate measure of quantum correlation, is analyzed in a two-
mode Gaussian state of the cavity field evolved by a system of quantum beat laser. In the …

Exploring the Survival and Sudden Death of Quantum Correlations in an Open Atomic Laser System

EM Kanea, CG Feyisa - Journal of Russian Laser Research, 2023 - Springer
We focus our study on the quantum correlations of coupled photon pairs produced in an
open atomic laser system, where quantum coherence is brought about by the superposition …