Quantum Computing

Quantum division circuits just got a lot cheaper.

According to Quantum Zeitgeist's report, Oxford Quantum Circuits moved Purcell filtering off the qubit chip and into multilayer PCB packaging, demonstrating the approach on a 35-qubit device with measured median T1 of 84 microseconds.

Charles Bennett and Gilles Brassard spent the 1980s arguing that quantum mechanics could solve a problem classical cryptography couldn't: how to establish a secret key between two parties with security guaranteed by physics rather than computational assumptions.

Horizon Quantum's $546M SPAC merger closes this week — and the quantum software story just got more interesting. The deal, combining Horizon Quantum Computing with dMY Squared Technology Group, won shareholder approval on March 17th.

China is building its own path on post-quantum cryptography — and the expert backing that push is no marginal figure. Wang Xiaoyun, the Tsinghua University cryptographer who helped break the MD5, SHA-0, and SHA-1 hash functions that underpinned a generation of internet security, told Reuters thi...

A trio of researchers at the Japan Advanced Institute of Science and Technology has published what they claim is a significant step forward in formally verifying quantum protocols before those protocols are deployed in the real world.

Researchers at ENS Lyon and ENS Paris-Saclay have demonstrated a tantalum-based transmon qubit that maintains stable charge offset for nearly three months—a significant finding for a field plagued by unpredictable charge drift that disrupts qubit operation. The team, led by Benjamin Huard (ENS L...

IBM has published the industry's first quantum-centric supercomputing reference architecture, a blueprint for integrating quantum processors with classical high-performance computing systems.

Researchers demonstrate first multi-qubit system with integrated superconducting digital control electronics at millikelvin temperatures, achieving 99%+ qubit fidelities.

A Nature Photonics review surveys advances in structured light for quantum communication, noting the toolkit has grown but long-distance transmission remains challenging.

# Local Droplet Etching Produces Better Quantum Dots for Photonic Chips A new manufacturing technique could make quantum dots more practical for integrated quantum photonics. Researchers in Brazil and Austria demonstrated that local droplet etching (LDE) can produce indium gallium arsenide (InG...