Phase-Encoded Quantum Secure Direct Communication over 11.4 km Hybrid Free-Space and Fiber Links

First km-scale phase-encoded QSDC demonstrated over 1.4 km urban free-space + 10 km fiber, achieving 99.07% interference visibility, 2.38% QBER, and 4.22 kbps — an 8× rate and 140× distance improvement over prior free-space QSDC.

#QuantumCommunication #QuantumNetworking #Research

Fundamental Limits on Polarization Entanglement Distribution in Optical Fiber

Pirandola derives capacity bounds for polarization entanglement distribution in optical fiber using an erasure-Pauli channel model. Active polarization control enables ~5M ebits/s at 100km, with results proven robust against detector dark counts.

#QuantumNetworking #QuantumCommunication #Research

Quantum Time Synchronization of N-User Star Networks via Entangled Photon Pairs

CableLabs extends single-source SPDC quantum time sync to 4-user star networks (fiber & free space), achieving 50ps precision with atomic clocks and 20ps with GPS-disciplined oscillators—3 orders of magnitude over GPS alone.

#QuantumNetworking #QuantumSensing #Research

Optimization Framework for Monitor Placement in Quantum Network Tomography

ILP-based framework optimizes monitor placement in quantum networks using QFIM & QCRB. Two formulations (QF, QMF) balance estimation accuracy vs. monitoring overhead, with proven optimality for star topologies and O(n log n) algorithm.

#QuantumNetworking #QuantumTomography #Research

Quantum-Preserving Telecom Frequency Conversion of Atomic Biphotons

Researchers achieved ~79.4% efficient telecom conversion of atomic biphotons using diamond-type FWM in cold Rb ensembles, preserving temporal waveforms and nonclassical correlations—enabling practical atomic-to-fiber quantum network interfaces.

#QuantumNetworking #QuantumPhotonics #Research

QuaNTUM: Modular Quantum Communication Testbed for Fiber and Satellite Integration

TUM researchers present QuaNTUM, an open-access campus testbed integrating fiber QKD, entanglement distribution, and hBN single-photon emitters—with solid-state quantum sources being deployed aboard CubeSats for satellite-ground quantum links.

#QuantumNetworking #QKD #Research

Deep-Learning-Designed AlGaAs Photonic Interface Linking Trapped Ions to Telecom Quantum Networks

Neural-network inverse design optimized an AlGaAs microcavity to emit polarization-entangled photon pairs at 1092 nm (88Sr+ ion transition) & 1550 nm (telecom C-band), achieving ~36x SPDC efficiency gain for scalable hybrid quantum networking.

#QuantumNetworking #PhotonicQuantum #TrappedIons

Photon-Echo Synchronization and Quantum State Transfer in Short Quantum Links

A Delay Differential Equation framework reveals photon-echo-driven synchronization in short quantum links, enabling STIRAP to achieve quadratic infidelity O((γτ)²)—outperforming SWAP and CZKM protocols for γτ≲1.44 on current circuit-QED hardware.

#QuantumNetworking #CircuitQED #Research

Full Network Nonlocality-Based Security in Quantum Key Distribution

Novel 4-party QKD protocol exploiting full network nonlocality achieves QBER below 13.7%, outperforming Bell-CHSH-based protocols (14.6%), by using trilocal inequality violation for eavesdropper detection in star-shaped quantum networks.

#QuantumCryptography #QuantumNetworking #Research

Scalable Graph State Preparation via Quotient-Augmented Strong Split Tree

OIST & Keio researchers achieve linear O(n) scaling for graph state preparation using a split-fuse construction and QASST, enabling hundreds-of-qubit states for measurement-based QC and quantum networking — down from O(n²) gate complexity.

#QuantumNetworking #GraphStates #News

High-Fidelity Quantum State Transfer via Two-Parameter Pulse-Shaped Pitch-and-Catch Protocol

A minimal two-parameter (ramp rate + delay) pulse-shaped pitch-and-catch protocol achieves >99.9% quantum state transfer fidelity across single-mode to multimode resonator regimes in circuit-QED and quantum-acoustic systems.

#QuantumNetworking #CircuitQED #Research

Hollow-Core Fiber for Quantum Repeater Networks: Performance Analysis vs. Silica SMF

HCF yields up to 10x improvement in secret-key rate over silica SMF in multiplexed two-way quantum repeater networks, enabling larger repeater spacing, memory-native wavelength transmission, and lower operational costs across realistic noise regimes.

#QuantumNetworking #HollowCoreFiber #Research

Efficient Graph State Preparation via Quotient-Augmented Strong Split Tree

New QASST-based split-fuse method achieves linear scaling in CZ gates, circuit depth & auxiliary qubits for distance-hereditary graph state prep—outperforming brute-force LC orbit search for large-scale MBQC and quantum networking.

#GraphStates #QuantumNetworking #MBQC

SEALSQ Signs LOI to Acquire Photonic Quantum Interconnect Developer Miraex

SEALSQ Corp plans to acquire Swiss firm Miraex SA, whose TFLT photonic integrated circuits enable microwave-to-optical transduction for distributed quantum computing, sensing, and networking — including space-based QSOC nanosatellite deployments.

#QuantumNetworking #PhotonicQuantum #News

IonQ Q1 2025 Financial Results and Quantum Networking Strategy Update

IonQ disclosed Q1 2025 earnings alongside strategic acquisitions targeting acceleration of both its quantum computing and quantum networking roadmaps, with metrics benchmarked against Q4 2024 and Q1 2024.

#IonQ #QuantumNetworking #News

IonQ Acquires ID Quantique, Expanding Quantum Networking Portfolio

IonQ has completed its acquisition of ID Quantique (IDQ), making IDQ a subsidiary. The move strengthens IonQ's position in quantum networking and quantum-secure communications globally.

#QuantumNetworking #QKD #News

Quantum Hamlets: Distributed Compilation of Large Algorithmic Graph States

BURY algorithm outperforms state-of-the-art k-partition methods by minimizing Bell pair consumption via matching-size optimization—not edge cuts—enabling scalable distributed MBQC across multiple QPUs.

#QuantumNetworking #MBQC #Research

📸 At Mobile World Congress, Hugues de Riedmatten shared how QIA is advancing #QuantumNetworking, from research to deployable infrastructure.

Prsentation highlights: quantum connectivity over telecom fiber, early quantum network OS, and portable quantum nodes enabling real-world demos.

High-Performance Multimode Quantum Memory for Quantum Interconnects

Cold-atom quantum memory stores 11 spatial POV modes with >80% uniform efficiency and >99% qubit fidelity, achieving a record 3.56 bits/min over a 1000 km repeater link using a new quantum interconnect rate benchmark.

#QuantumMemory #QuantumNetworking #Research

QIA Partners with QuIC to Advance Industrialisation of the Quantum Internet at Q-Expo QIA and QuIC announced a strategic partnership in the context of Q-Expo, using the event as a platform to advance the industrialisation of quantum networking and strengthen industry and supply-chain p...

🛫QIA is heading to Bilbao on 18–19 May for the Q-Expo.

As a strategic partner of the European Quantum Industry Consortium, QIA will lead a plenary on #quantumnetworking, convene the QIA Technology Forum & connect across the quantum ecosystem.

Read more: quantuminternetalliance.org/2026/02/24/q...

エアバスは、量子通信チャネルをセキュアに確立する手法と技術の特許を取得したばかりです！この革新は、将来にわたって安全な通信を保証する堅牢な量子ネットワークを構築するための鍵となります。
#QuantumTech #AirbusInnovation #QuantumNetworking #InformaQ

#QuantumTech #AirbusInnovation #QuantumNetworking

Quantum computing could break internet encryption by 2027—years ahead of schedule. Gary Bolton explains why network operators must act now on quantum-safe solutions. 🔐 www.youtube.com/watch?v=2iRB... #QuantumNetworking #Cybersecurity #QDay

Cisco Live EMEA

Experience the future of networking with Outshift by Cisco at Cisco Live EMEA 2026! Discover quantum breakthroughs like our Entanglement Chip and Quantum Lab. Visit our booth in Amsterdam, Feb 9-13. cs.co/63324C0vur #QuantumNetworking #CiscoLiveEMEA

Cisco Live EMEA 2026

Join top minds in tech at #CiscoLiveEMEA, Feb 9–13, 2026 in Amsterdam! #OutshiftbyCisco brings expert sessions on #AI, #quantumnetworking, and #security. Learn, connect, and shape enterprise tech’s future. cs.co/63320CSBE2 #TechInnovation #AI

Outshift blog

Looking for a resource that dives deep into agentic AI and #QuantumNetworking?

Read our blog for in-depth analyses and expert perspectives across the #InternetOfAgents, #QuantumResearch, and more: cs.co/63320CzofA 👈

#EmergingTech #TechInnovation #TechResources

Why your enterprise needs to invest in quantum networking now

The next tech revolution is here. #Quantumnetworking will unlock unprecedented power, eclipsing today's cloud and AI. We're building this future now. Discover why your enterprise needs to invest in #quantum networking now in our latest #OutshiftBlog.

cs.co/6332677QwE

What does mobile QKD look like? "Mobility" comes in varying classes.

The Quantum Dragon isn't the newsletter you need right now, but it's the newsletter you deserve.

bsiegelwax.substack.com/p/what-does-...

#QuantumKeyDistribution #QuantumCryptography #QuantumNetworking #PostQuantumCrypto

How Will Quantum Networks Transform Classical Computing? How does Cisco's quantum tech promise to enhance classical computing?

#Quantumnetworking is having its moment! IEEE Spectrum spotlighted our work shaping this tech - quantum sensors, secure comms, ultra-precise timing & more. With our software & entanglement chip, we’re bridging classical & quantum worlds. cs.co/633277XoEh

La Era Cuántica en Red: IBM y Cisco Se Unen para Conectar Computadoras Cuánticas y Alcanzar Trillones de Gates.

IBM y Cisco anunciaron (nov. 2025) un plan para crear computación cuántica distribuida en red. Buscan escalar máquinas cuánticas tolerantes a fallos más allá de límites de IBM, para ejecutar cálculos con trillones de quantum gates. #IBM #Cisco #ComputaciónCuántica #QuantumNetworking

⚡ We just fired up our first custom SPAD telecom detectors for the QuNet project! sites.google.com/view/marcjof... We've customized them specifically for quantum network applications. A huge milestone for our team✨
#Quantum #QuantumNetworking #QuantumTechnology