Semidefinite programming relaxations for quantum correlations

A Tavakoli, A Pozas-Kerstjens, P Brown… - Reviews of Modern Physics, 2024 - APS
Semidefinite programs are convex optimization problems involving a linear objective
function and a domain of positive-semidefinite matrices. Over the past two decades, they …

High-rate intercity quantum key distribution with a semiconductor single-photon source

J Yang, Z Jiang, F Benthin, J Hanel… - Light: Science & …, 2024 - nature.com
Quantum key distribution (QKD) enables the transmission of information that is secure
against general attacks by eavesdroppers. The use of on-demand quantum light sources in …

Single-emitter quantum key distribution over 175 km of fibre with optimised finite key rates

CL Morrison, RG Pousa, F Graffitti, ZX Koong… - Nature …, 2023 - nature.com
Quantum key distribution with solid-state single-photon emitters is gaining traction due to
their rapidly improving performance and compatibility with future quantum networks. Here …

Security of quantum key distribution from generalised entropy accumulation

T Metger, R Renner - Nature Communications, 2023 - nature.com
The goal of quantum key distribution (QKD) is to establish a secure key between two parties
connected by an insecure quantum channel. To use a QKD protocol in practice, one has to …

Free‐space quantum key distribution with single photons from defects in hexagonal boron nitride

Ç Samaner, S Paçal, G Mutlu… - Advanced Quantum …, 2022 - Wiley Online Library
Efficient single photon generation is an important requirement for several practical
applications in quantum technologies, including quantum cryptography. A proof‐of‐concept …

Quantum key distribution using a quantum emitter in hexagonal boron nitride

A Al‐Juboori, HZJ Zeng, MAP Nguyen… - Advanced Quantum …, 2023 - Wiley Online Library
Quantum key distribution (QKD) is considered the most immediate application to be widely
implemented among a variety of potential quantum technologies. QKD enables sharing …

Numerical calculations of the finite key rate for general quantum key distribution protocols

I George, J Lin, N Lütkenhaus - Physical Review Research, 2021 - APS
Finite key analysis of quantum key distribution (QKD) is an important tool for any QKD
implementation. While much work has been done on the framework of finite key analysis, the …

Quantum Information Processing, Sensing, and Communications: Their Myths, Realities, and Futures

L Hanzo, Z Babar, Z Cai, D Chandra… - Proceedings of the …, 2025 - ieeexplore.ieee.org
The recent advances in quantum information processing, sensing, and communications are
surveyed with the objective of identifying the associated knowledge gaps and formulating a …

Shared quantum key distribution based on asymmetric double quantum teleportation

C Cardoso-Isidoro, F Delgado - Symmetry, 2022 - mdpi.com
Quantum cryptography is a well-stated field within quantum applications where quantum
information is used to set secure communications, authentication, and secret keys. Now …

Satellite-based quantum key distribution in the presence of bypass channels

M Ghalaii, S Bahrani, C Liorni, F Grasselli… - PRX Quantum, 2023 - APS
The security of prepare-and-measure satellite-based quantum key distribution (QKD), under
restricted eavesdrop** scenarios, is addressed. We particularly consider cases where the …