Toshiba Quantum Key Distribution Technology for Multiplexing Over 30 Tbps of High-Capacity Data and Secret Keys https://www.global.toshiba/ww/news/digitalsolution/2025/03/news-20250326-01.html
Coherent quantum communications can be deployed on standard telecommunications infrastructure. The key breakthrough is a new system architecture that replaces unwieldy, complex cryogenic components with simple semiconductor-based devices. For the first time in a real-life deployment, quantum information encoded in the phase of a quantum light signal was shown to be perfectly stable, despite propagating over 250 km of deployed telecom fibre, using only off-the-shelf components and operating in a typical colocation data centre at room temperature.
integrated PQC & QKD solution for quantum-safe networking https://www.toshiba.eu/quantum/news/toshiba-announces-integrated-pqc-qkd-solution-for-quantum-safe-networking/Quantum network in Germany https://www.toshiba.eu/quantum/news/toshiba-breakthrough-on-national-quantum-networking/ Key breakthrough is the use of semiconductor avalanche photodiodes.
Google Quantum paper Generative Quantum AI https://arxiv.org/pdf/2509.09033 “quantum enhanced generative models with provable advantage”
As a key application, we theoretically and experimentally demonstrate advantage in sampling from classical distributions that are classically intractable, scaling up to 816 shallow qubits with inferred results beyond 34,000 shallow qubits. This is enabled by an exact deep-to-shallow circuit mapping that allows exact sampling from very deep 2D circuits, which we prove are universal. (d) We prove that learning to generate compressed quantum circuits for physical simulation is classically hard. This stands in sharp contrast to the efficient techniques for learning to generate low-depth circuits demonstrated here experimentally on a real device using up to 40 physical qubits.
The success of ML has been largely driven by the availability of data, and at its heart, the universe and its data are quantum. Quantum machine learning has a unique opportunity to take advantage of this data in its natural form, and we believe that for generative processes involving quantum data, quantum computers will be essential.
Quantum Motion – computer at UK National Quantum computing centre https://quantummotion.tech/quantum-motion-delivers-the-industrys-first-full-stack-silicon-cmos-quantum-computer/
The system integrates a Quantum Processing Unit (QPU) with a user interface and control stack compatible with industry standard software frameworks such as Qiskit and Cirq. The company’s architecture and manufacturing approach are designed to scale to a fault-tolerant system. The system demonstrates single- and two-qubit operations, initialization, and readout within a compact architecture that has a data-center-friendly footprint of three 19” server racks. This design allows systems to be easily upgraded by installing future generation QPUs
Q-CTRL DARPA awards – navigation sensors https://q-ctrl.com/blog/darpa-selects-q-ctrl-to-develop-next-generation-quantum-sensors-for-navigation-on-advanced-defense-platforms
https://q-ctrl.com/ironstone-opal
MIT quantum Index report (June 2025) https://qir.mit.edu/
https://www.yumpu.com/en/document/read/70553845/2025-mit-quantum-index-report
28 quantum networking test beds in US and Europe
39% of quantum communications research papers coming from China; US 12%, everywhere else less than 5%
Section 9 – different ways to do quantum computing “modalities”
Quantum network at Montana State University Qunnect
Also in New York and Berlin https://www.qunnect.inc/press-release-2025-09-09
The Carina product suite integrates Qunnect’s 1) atom-based, entangled-photon generators, 2) single photon counting detectors with high resolution time tagging, and 3) adaptive polarization compensation, entanglement validation and orchestration into a single rack-mount unit. Key features include:
- High-rate entangled pair generation at telecom wavelengths for up to 100 km fiber spans
- Real-time polarization stabilization to maintain fidelity over changing environmental conditions
- Modular interface for seamless integration with existing DWDM networks and classical data channels
Cunning Systems 