Security of device-independent quantum key distribution protocols: a review

IW Primaatmaja, KT Goh, EYZ Tan, JTF Khoo… - Quantum, 2023 - quantum-journal.org
Device-independent quantum key distribution (DI-QKD) is often seen as the ultimate key
exchange protocol in terms of security, as it can be performed securely with uncharacterised …

[HTML][HTML] High-capacity device-independent quantum secure direct communication based on hyper-encoding

H Zeng, MM Du, W Zhong, L Zhou, YB Sheng - Fundamental Research, 2024 - Elsevier
Quantum secure direct communication (QSDC) can directly transmit secret messages
through quantum channel without keys. Device-independent (DI) QSDC guarantees the …

Practical limitations on robustness and scalability of quantum Internet

A Sadhu, MA Somayajula, K Horodecki… - arXiv preprint arXiv …, 2023 - arxiv.org
As quantum theory allows for information processing and computing tasks that otherwise are
not possible with classical systems, there is a need and use of quantum Internet beyond …

Fundamental limitations on the device-independent quantum conference key agreement

K Horodecki, M Winczewski, S Das - Physical Review A, 2022 - APS
We provide several general upper bounds on the rate of a key secure against a quantum
adversary in the device-independent conference key agreement (DI-CKA) scenario. They …

Upper bounds on key rates in device-independent quantum key distribution based on convex-combination attacks

K Łukanowski, M Balanzó-Juandó, M Farkas… - Quantum, 2023 - quantum-journal.org
The device-independent framework constitutes the most pragmatic approach to quantum
protocols that does not put any trust in their implementations. It requires all claims, about eg …

Testing of quantum nonlocal correlations under constrained free will and imperfect detectors

A Sadhu, S Das - Physical Review A, 2023 - APS
In this work, we deal with the relaxation of two central assumptions in standard locally
realistic hidden variable (LRHV) inequalities: free will in choosing measurement settings …

Squashed quantum non-Markovianity: a measure of genuine quantum non-Markovianity in states

R Gangwar, T Pandit, K Goswami, S Das… - arXiv preprint arXiv …, 2023 - arxiv.org
Quantum non-Markovianity in tripartite quantum states $\rho_ {ABC} $ represents a
correlation between systems $ A $ and $ C $ when conditioned on the system $ B $ and is …

Multipartite intrinsic non-locality and device-independent conference key agreement

A Philip, E Kaur, P Bierhorst, MM Wilde - Quantum, 2023 - quantum-journal.org
In this work, we introduce multipartite intrinsic non-locality as a method for quantifying
resources in the multipartite scenario of device-independent (DI) conference key agreement …

Prospects for device-independent quantum key distribution

EYZ Tan - arXiv preprint arXiv:2111.11769, 2021 - arxiv.org
Device-independent quantum key distribution (DIQKD) aims to achieve secure key
distribution with only minimal assumptions, by basing its security on the violation of Bell …

Limitations on a device-independent key secure against a nonsignaling adversary via squashed nonlocality

M Winczewski, T Das, K Horodecki - Physical Review A, 2022 - APS
We initiate a systematic study to provide upper bounds on device-independent keys, secure
against a nonsignaling adversary (NSDI). We employ the idea of “squashing” on the secrecy …