Device-independent quantum key distribution using random quantum states

S Bera, S Gupta, AS Majumdar - Quantum Information Processing, 2023 - Springer
We Haar uniformly generate random states of various ranks and study their performance in
an entanglement-based quantum key distribution (QKD) task. In particular, we analyze the …

Device-independent quantum secure direct communication under non-Markovian quantum channels

P Roy, S Bera, S Gupta, AS Majumdar - Quantum Information Processing, 2024 - Springer
Device-independent quantum secure direct communication (DI-QSDC) is a promising
primitive in quantum cryptography aimed towards addressing the problems of device …

Superiority in dense coding through non-Markovian stochasticity

A Muhuri, R Gupta, S Ghosh, A Sen - Physical Review A, 2024 - APS
We investigate the distributed dense coding (DC) protocol, involving multiple senders and a
single or two receivers under the influence of non-Markovian noise, acting on the encoded …

Statistics of entanglement transformation with hierarchies among catalysts

R Gupta, A Maity, S Mal, A Sen - Physical Review A, 2022 - APS
The distribution of typical bipartite pure states is studied within the framework of state
transformation via local operations and classical communication (LOCC). We report the …

Generic aspects of the resource theory of quantum coherence

FD Cunden, P Facchi, G Florio, G Gramegna - Physical Review A, 2021 - APS
The class of incoherent operations induces a preorder on the set of quantum pure states,
defined by the possibility of converting one state into the other by transformations within the …

Genuine three qubit Einstein–Podolsky–Rosen steering under decoherence: revealing hidden genuine steerability via pre-processing

S Gupta - Quantum Information Processing, 2023 - Springer
The behaviour of genuine EPR steering of three qubit states under various environmental
noises is investigated. In particular, we consider the two possible steering scenarios in the …

Significance of fidelity deviation in continuous-variable teleportation

A Patra, R Gupta, S Roy, A Sen - Physical Review A, 2022 - APS
Performance of quantum teleportation is typically measured by the average fidelity, an
overlap between the input and output states. Along with the first moment, we introduce the …

Joint remote state preparation of an arbitrary single-qutrit state in noisy environment

C Jiang, YZ Wei, M Jiang - Pramana, 2024 - Springer
In this paper, a joint remote state preparation scheme for an arbitrary single-qutrit state is
proposed. First, we introduce how to remotely prepare an arbitrary single-qutrit state in the …

Information theoretic resource-breaking channels

A Muhuri, A Patra, R Gupta, AS De - arXiv preprint arXiv:2309.03108, 2023 - arxiv.org
We present a framework of channels that break the resource associated with a given
quantum information processing task, in which entanglement is not adequate. In particular …

Typical behaviour of genuine multimode entanglement of pure Gaussian states

S Roy - arXiv preprint arXiv:2404.17265, 2024 - arxiv.org
Trends of genuine entanglement in Haar uniformly generated multimode pure Gaussian
states with fixed average energy per mode are explored. A distance-based metric known as …