#superactivation
November 1, 2026 at 7:39 PM
Two quantum channels individually incapable of private communication can jointly transmit private classical information when used together—revealing how quantum information contextuality enables emergent capabilities impossible with classical channels.
Superactivation of Private Capacity from Zero-Capacity Pauli Channels
arxiv.org
September 18, 2026 at 7:42 AM
Resolves a longstanding quantum information puzzle: two channels with zero private capacity can jointly enable secure communication achieving >0.0001903 private bits per use through superactivation—impossible for classical channels.

#QuantumCryptography #QuantumInformation #Research
Private Communication via Zero-Capacity Quantum Channels
iq.fp2.dev
September 10, 2026 at 9:03 AM
Résout une énigme persistante en information quantique : deux canaux de capacité privée nulle peuvent conjointement permettre une communication sécurisée réalisant >0.0001903 bits privés par utilisation via la superactivation—impossible pour les canaux classiques.
Communication privée via des canaux quantiques de capacité nulle
arxiv.org
September 10, 2026 at 9:04 AM
Multi-copy and Catalytic Superactivation of Genuine Multipartite Nonlocality
https://arxiv.org/pdf/2609.07380
Bora Ulu, Mirjam Weilenmann, Nicolas Brunner.
https://arxiv.org/abs/2609.07380
arXiv abstract link
arxiv.org
September 9, 2026 at 1:35 PM
Local classical wirings of biseparable quantum correlations can create genuine multipartite nonlocality—revealing instability of current GMNL definitions and questioning their operational validity in quantum information theory.

#QuantumNonlocality #BellInequalities #Research
Superactivation of Genuine Multipartite Nonlocality Through Local Quantum Operations
iq.fp2.dev
September 9, 2026 at 1:07 PM
Bora Ulu, Mirjam Weilenmann, Nicolas Brunner: Multi-copy and Catalytic Superactivation of Genuine Multipartite Nonlocality https://arxiv.org/abs/2609.07380 https://arxiv.org/pdf/2609.07380 https://arxiv.org/html/2609.07380
September 9, 2026 at 7:01 AM
I remember loving this show as a kid (especially enjoyed the superactivation theme) so I decided to draw some fanart in appreciation. Enjoy!😊 #robotboy #fanart #art #sketch
August 29, 2026 at 10:46 PM
Researchers Find Five Copies Maximise Quantum Entanglement before It Declines

Read more:
https://quantumzeitgeist.com/quantum-entanglement-superactivation-multiple-copies-optimisation/
Researchers Find Five Copies Maximise Quantum Entanglement Before It Declines
Genuine multipartite entangled states unexpectedly diminish in usefulness when copied too many times. Beyond a specific point, revealed through projecting numerous copies into a single quantum system, fidelity with pure GHZ states rapidly declines. This demonstrates a clear limitation to simply increasing copy numbers when attempting to enhance these fragile resources, differentiating it from existing techniques like entanglement distillation.
quantumzeitgeist.com
August 24, 2026 at 8:38 PM
New from Klára. With superactivation of genuinely multipartite entanglement, how much extra entanglement can you get from local projections of multiple copies of a state? Here it's shown that an optimal number can exist arxiv.org/abs/2608.19427
August 21, 2026 at 9:27 AM
"For fundamental contributions on quantum channel capacities including proving continuity, elucidating the phenomenon of superactivation, and for providing a classification of all the additive entropic formulas."
October 19, 2023 at 4:50 PM
But this new paper is about a rather novel kind of glutamate receptor, slow AMPA. We started on this about a decade ago because we saw that some helper “auxiliary” proteins can give AMPARs slow activation and help them resist desensitisation. 6/n
www.nature.com/articles/nco...
Superactivation of AMPA receptors by auxiliary proteins - Nature Communications
Transmembrane AMPA receptor regulatory proteins (TARPs) exert a number of effects on fast glutamatergic synaptic transmission. Here, the authors model the interactions of two such proteins, Stargazin ...
www.nature.com
July 25, 2026 at 7:37 AM
PyTorch simulator refutes an 18-year-old quantum theorem
Discussion | hackernews | Author: NeoOdim
PyTorch simulator refutes an 18-year-old quantum theorem
Contribute to lizbeth307/quantum-superactivation-refutation development by creating an account on GitHub.
github.com
May 14, 2026 at 11:21 PM
Deux canaux quantiques de capacité nulle peuvent transmettre de l'information quantique lorsqu'ils sont utilisés conjointement, avec la superactivation démontrée en seulement 17 utilisations de canal en utilisant des codes invariants par permutation—transformant un phénomène p...
Superactivation de la Capacité Quantique à Longueur Finie de Bloc avec Protocoles Explicites
iq.fp2.dev
May 1, 2026 at 9:16 AM
Deepika Bhargava, Arijit Chatterjee, Vishal Varma, T. S. Mahesh: Noise cancellation by superposition of channels and superactivation of quantum capacity: Experimental realization by NMR https://arxiv.org/abs/2606.10744 https://arxiv.org/pdf/2606.10744 https://arxiv.org/html/2606.10744
June 10, 2026 at 7:00 AM
Marco Parentin, Bjarne Bergh, Nilanjana Datta, Mark M. Wilde: Onset of superactivation of quantum capacity https://arxiv.org/abs/2604.27042 https://arxiv.org/pdf/2604.27042 https://arxiv.org/html/2604.27042
May 1, 2026 at 6:59 AM
Chattopadhyay, Ambuj, Das, Patra, Roychowdhury, Banik, Mukherjee: Conclusive Identification Via Noisy Classical Channel: Superactivation and Quantum Advantage https://arxiv.org/abs/2604.00089 https://arxiv.org/pdf/2604.00089 https://arxiv.org/html/2604.00089
April 2, 2026 at 6:49 AM
Markus Miethlinger, Riccardo Castellano, Pavel Sekatski, Nicolas Brunner: Superactivation of genuine multipartite Bell nonlocality from two-party entanglement https://arxiv.org/abs/2603.17783 https://arxiv.org/pdf/2603.17783 https://arxiv.org/html/2603.17783
March 19, 2026 at 6:50 AM
Zhang, Fei, Liu, Zhang, Yin, Mao, Li, Liu, G\"uhne, Ma, Chen, Pan: Entanglement Superactivation in Multiphoton Distillation Networks https://arxiv.org/abs/2510.26290 https://arxiv.org/pdf/2510.26290 https://arxiv.org/html/2510.26290
October 31, 2025 at 6:50 AM
form of superactivation of Bell nonlocality, as well as an interesting form of quantum catalysis. On the technical level, our main tool is a formal connection between catalytic activation and many-copy activation, which is of independent interest. [4/4 of https://arxiv.org/abs/2504.02042v1]
April 4, 2025 at 6:14 AM
Noise cancellation by superposition of channels and superactivation of quantum capacity: Experimental realization by NMR
https://arxiv.org/pdf/2606.10744
Deepika Bhargava, Arijit Chatterjee, Vishal Varma, T. S. Mahesh.
https://arxiv.org/abs/2606.10744
arXiv abstract link
arxiv.org
June 10, 2026 at 4:02 AM
Onset of superactivation of quantum capacity
https://arxiv.org/pdf/2604.27042
Marco Parentin, Bjarne Bergh, Nilanjana Datta, Mark M. Wilde.
https://arxiv.org/abs/2604.27042
arXiv abstract link
arxiv.org
May 1, 2026 at 4:52 AM
Conclusive Identification Via Noisy Classical Channel: Superactivation and Quantum Advantage
https://arxiv.org/pdf/2604.00089
Anushko Chattopadhyay, Ambuj, Rakesh Das, Smritikana Patra, Chitrak Roychowdhury, Manik Banik, Amit Mukherjee.
https://arxiv.org/abs/2604.00089
arXiv abstract link
arxiv.org
April 2, 2026 at 4:47 AM
Superactivation of genuine multipartite Bell nonlocality from two-party entanglement
https://arxiv.org/pdf/2603.17783
Markus Miethlinger, Riccardo Castellano, Pavel Sekatski, Nicolas Brunner.
https://arxiv.org/abs/2603.17783
arXiv abstract link
arxiv.org
March 19, 2026 at 4:35 AM