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 …

Dimensional advantage in secure information trading via the noisy dense-coding protocol

A Patra, R Gupta, T Das, A Sen - Physical Review A, 2024 - APS
The quantum dense-coding (DC) protocol, which has no security feature, deals with the
transmission of classical information encoded in a quantum state by using shared …

Nonclassical resource for continuous-variable telecloning with non-Gaussian advantage

S Das, R Gupta, HS Dhar, A Sen - Physical Review A, 2024 - APS
The telecloning protocol distributes quantum states from a single sender to multiple
receivers via a shared entangled state by exploiting the notions of teleportation and …

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 …

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 …

Recovery of resource through sequential noisy measurements

S Mondal, P Halder, AK Pal, AS De - arXiv preprint arXiv:2406.07652, 2024 - arxiv.org
Noisy unsharp measurements incorporated in quantum information protocols may hinder
performance, reducing the quantum advantage. However, we show that, unlike projective …

Preservation of entanglement in local noisy channels

P Ghosh, K Sen, U Sen - Physical Review A, 2024 - APS
Entanglement subject to noise cannot be shielded against decaying. But, in case of many
noisy channels, the degradation can be partially prevented by using local unitary operations …

Exploring the Non-Markovian Dynamics in Depolarizing Maps

A Abu-Nada, S Banerjee, VB Sabale - arXiv preprint arXiv:2403.04813, 2024 - arxiv.org
The non-Markovian depolarizing channel is explored from the perspective of understanding
its non-Markovian behaviour as well as the occurrence of singularities. The study brings …