UC Berkeley researchers create new chip for quantum light sources

The acquisition of Oxford Ionics by US quantum leader IonQ has now formally completed. It’s a landmark $1.075 billion deal and the highest-value acquisition of a University of Oxford quantum computing spinout to date. Founded by Oxford physicists Dr Chris Ballance and Dr Thomas Harty, Oxford Ionics has grown from an idea in the lab to a global leader in the field. Discover more about their story here: https://lnkd.in/dZ5qDckd

This week, we'd like to share work by researchers at the University of Stuttgart: "Suppressing crosstalk for Rydberg quantum gates" arXiv Paper: https://lnkd.in/g96bbUw4 By relying on coherent shuttling of qubits, neutral-atom technologies achieve high parallelization and low crosstalk via geometric isolation of qubits and utilization of global addressing laser beams to generate entanglement. The downside of this strategy is to miss the opportunity to directly steer laser beams to atoms locally in order to generate selective entanglement on a QPU. A challenge of this latter approach is that locally addressing qubits tends to generate leakage of light that scatters nearby qubits and introduces further errors across the system. The authors of this work offer a 3-qubit model to study how extra atoms get affected by a local 2-qubit gate, and thus design and simulate new pulse protocols to cancel the largest contributions for errors. As a complementary strategy for standard atom shuttling and global beams, this work helps pave the way for large-scale quantum computing with neutral atoms. #QuEraComputing #NeutralAtoms #RydbergGates #QubitCrosstalk #UniversityStuttgart

Sweden Quantum, a 2022 spin-off from Chalmers University of Technology in Gothenburg, is tackling one of the hardest engineering problems in quantum computing: protecting superconducting qubits from disruptive thermal radiation without degrading their signals. Its flagship product, the High-Energy Radiation Drain (HERD) filter, uses a novel cryogenic waveguide design to block high-frequency noise while maintaining extremely low signal loss. By solving this bottleneck, Sweden Quantum enables more stable and scalable quantum processors – a capability at the core of Europe’s ambitions to build sovereign quantum technologies. The company’s products are already validated in leading research labs, including Chalmers’ 202Q Lab and Yale University, and are now commercially available through allied distributors. This positions Sweden Quantum not just as a niche component maker, but as a key enabler of Europe’s quantum ecosystem, reducing reliance on U.S. suppliers and contributing to Europe’s technological autonomy in a field with profound security implications. The Defence Finance Monitor profile explores Sweden Quantum’s technology portfolio, strategic positioning, and potential role in dual-use applications. It examines how HERD filters could underpin secure quantum communications, quantum sensing, and future space-based cryogenic instruments. The analysis also reviews the company’s intellectual property, European manufacturing base, and its contribution to sovereignty by providing a home-grown alternative to non-European components. 👉 Read the full company profile on Defence Finance Monitor to access DFM’s assessment of Sweden Quantum, including its contribution to European autonomy, the maturity of its cryogenic quantum hardware, and its potential applications in NATO’s cyber and space domains. #SwedenQuantum #SimoneGasparinetti #GustavLiepaÅström #RobertRehammar #QuantumComputing #Cryogenics #EuropeanStrategicAutonomy #DefenceFinanceMonitor https://lnkd.in/de2G-Hgz

Quantum technology is thriving across the Mountain West region! Last month, MSU launched its new QCORE test bed, featuring two types of quantum computers (Rigetti & ORCA). This infrastructure will accelerate the development of the region's quantum capabilities and supply chain in photonics and superconducting modalities.   For more information, read here.  https://lnkd.in/e9dBNSzV

Will Trapped Ions Win the Quantum Race? Quantum is no longer just research - commercialization is here, and entire industries are at stake. Trapped ions lead in fidelity and coherence, but their biggest challenge is speed and scalability. Six companies are betting their futures on this approach: 1. IonQ – 1,224 publications 2. Quantinuum – 410 publications 3. Universal Quantum – 61 publications 4. eleQtron GmbH – 61 publications 5. @Huayi Quantum – 45 publications 6. Oxford Ionics – 42 publications 7. Alpine QuantumTechnologies (AQT) – 40 publications Take a look at the chart below. We reviewed their total patent portfolios to cut through the noise and highlight where the trapped-ion contenders stand today. View the full Quantum Computing Pulse Report here for the complete analysis: https://lnkd.in/gfupz5ZE #QuantumComputing #TrappedIon #DeepTech #QuantumRace

Quantum technology with light is taking off! Photonic quantum technologies are rushing from lab experiments to real-world applications. From computations beyond the reach of today’s supercomputers to fully secure communication and ultra-precise measurements – the possibilities are huge. Read more about this development in Nature Materials, co-authored by QUANT PI Jelmer Renema, MESA+: 👉 https://lnkd.in/eKKDgqhm #QuantumTechnology #Photonics #Research #MESAplus

🚀 check out our News & Views article in Nature Materials, co-authored with #JamesAnalytis: “Towards spin-wave integrated circuits” Link:  https://lnkd.in/gNF2aH-E Covering a recent work out of the University of Münster, we discuss why spin waves and their quanta, magnons, are uniquely positioned to drive wave-based computing in ways that photons and phonons cannot. We also outline some of the key challenges on the road to scalable magnonic technologies. Among them is the need for field-free operation, an area where we recently made progress using strain engineering: Link: https://lnkd.in/gN45Y6d6 I believe spin waves and magnons will continue to surprise us with tremendous potential in both classical and quantum computing.

The most anticipated #quantum week of the year is fast approaching. 👀 The IEEE International Conference on Quantum Computing and Engineering will bring together quantum researchers, engineers, industry specialists, and newcomers to explore the future of #quantumcomputers. During the #IEEEQuantumWeek , you will be able to join conversations on: 💠 hybrid quantum-classical computing architectures & algorithms 💠 quantum error correction and mitigation 💠 quantum utility 💠 quantum advantage 💠 quantum applications We will be joining the event and contributing to the discussion with two talks. 🎤💬👥 On 1st September, our CTO Matteo Rossi will present a session for Quantum Computing for Natural Sciences: Technology and Applications 2025 on “Scalable Quantum simulation pipeline for Quantum Chemistry”. 🧪💧🔬 Moreover, Aaron Miller will join the Advanced Simulations of Quantum Computations Workshop on 31st August with a session on “Large-scale fermionic state preparation with Majorana propagation”. 🔧💻🛠️ We are looking forward to being in Albuquerque and contributing to the IEEE Quantum Week!

🚀 Day 13 of my 21-Day Quantum Computing Challenge with QuCode 🚀 Today’s Focus: Quantum Computing Models 🔹 Circuit Model - The most widely used framework, where computations are built using quantum gates and circuits (experimented with Qiskit). 🔹 Adiabatic Quantum Computing (AQC) - Relies on slowly evolving a quantum system to remain in its lowest-energy state (linked to Quantum Annealing and optimization problems). Explored this through Quantum Sense. 🔹 Measurement-based QC - Uses an entangled resource state, where computation progresses via sequential measurements. Each model offers a different way of harnessing quantum mechanics for computation. #QuantumComputing #QuantumModels #Qiskit #AdiabaticQC #MeasurementBasedQC

Quantum computing 9 #Qucode Exploring Quantum Gates & Circuits Quantum computing is reshaping the future of technology—and at the core of it are quantum gates, the building blocks of quantum circuits. Here are some foundational gates every quantum enthusiast should know: 🔹 Pauli Gates (X, Y, Z) – The quantum analogs of classical bit flips and rotations. 🔹 Hadamard Gate (H) – Creates superpositions, turning definite states into quantum possibilities. 🔹 Phase Gate (S, T) – Adds phase shifts, essential for interference and quantum control. 🔹 CNOT Gate (Controlled-NOT) – A two-qubit gate critical for entanglement and quantum logic. 🔹 Unitary Transformations – All quantum gates are unitary, meaning they preserve the norm of the quantum state (reversible operations).