Nature Search

Tunnelling photons challenge interpretation of quantum mechanics

Measurements with confined photons challenge a prediction that particles that ‘quantum tunnel’ into infinitely long barriers will get stuck.

Alessandro Fedrizzi
Fabio Biancalana
News & Views02 Jul 2025
Nature

Volume: 643, P: 37-38
A large-scale reconfigurable multiplexed quantum photonic network

A reconfigurable eight-user photonic network is realized by connecting two local four-user networks through a programmable 8 × 8-dimensional multi-port device. Multiplexed routing and swapping of qubit entanglement are demonstrated for all network configurations and channels.

Natalia Herrera Valencia
Annameng Ma
Mehul Malik
ResearchOpen Access26 Nov 2025
Nature Photonics

P: 1-6
Conclusive quantum steering with superconducting transition-edge sensors

Untrustworthy sources or detectors mean that quantum entanglement cannot always be ensured, but quantum steering inequalities can verify its presence. Using a highly efficient system, Smithet al. are able to close the detection loophole and clearly demonstrate steering between two parties.

Devin H. Smith
Geoff Gillett
Andrew G. White
ResearchOpen Access10 Jan 2012
Nature Communications

Volume: 3, P: 1-6
Observation of topologically protected bound states in photonic quantum walks

Topological phases are unusual states of matter whose properties are robust against small perturbations. Using a photonic quantum walk system, Kitagawaet al. simulate one-dimensional topological phases and reveal novel topological phenomena far from the static or adiabatic regimes.

Takuya Kitagawa
Matthew A. Broome
Andrew G. White
Research06 Jun 2012
Nature Communications

Volume: 3, P: 1-7
Enhancing coherent transport in a photonic network using controllable decoherence

The efficiency of coherent transport can be enhanced through interaction between the system and a noisy environment. Here, Biggerstaff et al. report an experimental simulation of environment assisted coherent transport using laser-written waveguides, showing that controllable decoherence yields an increase in transport efficiency.

Devon N. Biggerstaff
René Heilmann
Ivan Kassal
ResearchOpen Access15 Apr 2016
Nature Communications

Volume: 7, P: 1-6
High-fidelity transmission of entanglement over a high-loss free-space channel

An experiment distributing entangled photons over 144 km significantly raises the bar on distance, channel loss and transmission time—encouraging news with regard to future long-distance quantum-communication networks.

Alessandro Fedrizzi
Rupert Ursin
Anton Zeilinger
Research03 May 2009
Nature Physics

Volume: 5, P: 389-392
Single-emitter quantum key distribution over 175 km of fibre with optimised finite key rates

Future single-photon-based quantum networks will require both reliable telecom single-photon sources and improvements in security analysis. Here, the authors show how to use quantum dots and difference frequency generation to perform long-distance QKD, also reducing secure key acquisition time thanks to improved analytical bounds.

Christopher L. Morrison
Roberto G. Pousa
Alessandro Fedrizzi
ResearchOpen Access16 Jun 2023
Nature Communications

Volume: 14, P: 1-8
Direct generation of photon triplets using cascaded photon-pair sources

Non-classical states of light, such as entangled photon states, form an essential quantum resource. Entangled photon pairs can be created by spontaneous parametric down-conversion of laser light, but so far it has not been possible to produce photon triplets in this way. These authors report the generation of quantum-correlated photon triplets by cascaded down-conversion of a single pump photon. This should find widespread use in optical quantum technologies.

Hannes Hübel
Deny R. Hamel
Thomas Jennewein
Research29 Jul 2010
Nature

Volume: 466, P: 601-603
Information Causality in the Quantum and Post-Quantum Regime

Martin Ringbauer
Alessandro Fedrizzi
Andrew G. White
ResearchOpen Access07 Nov 2014
Scientific Reports

Volume: 4, P: 1-6
Conference key agreement in a quantum network

Alexander Pickston
Joseph Ho
Alessandro Fedrizzi
ResearchOpen Access22 Aug 2023
npj Quantum Information

Volume: 9, P: 1-6
Multi-time quantum correlations with no spatial analog

Martin Ringbauer
Fabio Costa
Alessandro Fedrizzi
ResearchOpen Access02 Aug 2018
npj Quantum Information

Volume: 4, P: 1-6
Guarantees on the structure of experimental quantum networks

Andrés Ulibarrena
Jonathan W. Webb
Alejandro Pozas-Kerstjens
ResearchOpen Access14 Nov 2024
npj Quantum Information

Volume: 10, P: 1-8
Marital status and long-term cardiovascular risk in general population (Gubbio, Italy)

Xavier Humbert
Andry Rabiaza
Paolo E. Puddu
ResearchOpen Access25 Apr 2023
Scientific Reports

Volume: 13, P: 1-9
Entanglement-based quantum communication complexity beyond Bell nonlocality

Joseph Ho
George Moreno
Rafael Chaves
ResearchOpen Access03 Feb 2022
npj Quantum Information

Volume: 8, P: 1-7
The coherence time of sunlight in the context of natural and artificial light-harvesting

Berke Vow Ricketti
Erik M. Gauger
Alessandro Fedrizzi
ResearchOpen Access31 Mar 2022
Scientific Reports

Volume: 12, P: 1-9
Impact of Sex on Office White Coat Effect Tail: Investigating Two Italian Residential Cohorts

Xavier Humbert
Sophie Fedrizzi
Paolo E. Puddu
ResearchOpen Access21 Nov 2019
Scientific Reports

Volume: 9, P: 1-10
Engineering integrated photonics for heralded quantum gates

Thomas Meany
Devon N. Biggerstaff
Michael J. Withford
ResearchOpen Access10 Jun 2016
Scientific Reports

Volume: 6, P: 1-8

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