activity
20222026
most citedA tunable quantum random number generator based on a fiber-optical Sagnac interferometer

12 citations · 23 across the 10 of their papers we have counts for

collaborators

10 papers

quant-ph2026

An optical-fibre-integrated buffer for packet-switched quantum networks

Daniel Spegel-Lexne, Joakim Argillander, Martin Clason +5

Packet-switched quantum networks require buffers that can delay qubit payloads while routing information is read out in real time. Previous approaches have not provided this functi…

quant-ph2026

Deployed trusted-node quantum key distribution over 300 km with a multi-core fiber access link

Martin Clason, Joakim Argillander, Didrik Bergström +8

Quantum key distribution (QKD) is increasingly considered for deployment in realistic communication networks, where long distances, heterogeneous fiber infrastructure, and coexiste…

quant-ph2025

High-dimensional detection-loophole-free measurement-device-independent quantum random number generator

Joakim Argillander, Daniel Spegel-Lexne, Martin Clason +4

Certifying random number generators is challenging, especially in security-critical fields like cryptography. Here, we demonstrate a measurement-device-independent quantum random n…

quant-ph2025

Certifying semi-device-independent security via wave-particle duality experiments

Chithra Raj, Tushita Prasad, Anubhav Chaturvedi +8

Wave-particle duality is known to be equivalent to an entropic uncertainty relation based on the min- and max-entropies, which have a clear operational meaning in quantum cryptogra…

quant-ph2025

Storage Buffer of Polarization Quantum States Based on a Poled-Fiber Phase Modulator

Daniel Spegel-Lexne, João Manoel Barbosa Pereira, Alvaro Alarcón +6

Dynamic storage of qubits is crucial for quantum communication networks. Here we present an adjustable buffer capable of storing photonic polarization quantum states in a fiber loo…

quant-ph2024

Experimental demonstration of the equivalence of entropic uncertainty with wave-particle duality

Daniel Spegel-Lexne, Santiago Gómez, Joakim Argillander +4

Wave-particle duality is one of the most striking and counter-intuitive features of quantum mechanics, illustrating that two incompatible observables cannot be measured simultaneou…

physics.optics2023

All-in-fiber dynamic orbital angular momentum mode sorting

Alvaro Alarcón, Santiago Gómez, Daniel Spegel-Lexne +5

The orbital angular momentum (OAM) spatial degree of freedom of light has been widely explored in many applications, including telecommunications, quantum information and light-bas…

quant-ph2023★ 11 cited

Dynamic generation of photonic spatial quantum states with an all-fiber platform

A. Alarcón, J. Argillander, D. Spegel-Lexne +1

Photonic spatial quantum states are a subject of great interest for applications in quantum communication. One important challenge has been how to dynamically generate these states…

quant-ph2022

Quantum random number generation based on a perovskite light emitting diode

Joakim Argillander, Alvaro Alarcón, Chunxiong Bao +4

The recent development of perovskite light emitting diodes (PeLEDs) has the potential to revolutionize the fields of optical communication and lighting devices, due to their simpli…

quant-ph2022★ 12 cited

A tunable quantum random number generator based on a fiber-optical Sagnac interferometer

Joakim Argillander, Alvaro Alarcón, Guilherme B. Xavier

Quantum random number generators (QRNG) are based on the naturally random measurement results performed on individual quantum systems. Here, we demonstrate a branching-path photoni…