IBM's Quantum Developers Conference showcased significant progress in quantum computing, emphasizing performance and ease of use through hardware and software advancements, new tools, and collaborations.
Hardware Improvements
IBM continues to execute on its roadmap, achieving several key milestones. The Heron family remains their flagship quantum chip, with Heron R2 now boasting 156 qubits and improved gate fidelity through techniques like TLS mitigation, better coupler calibrations, and fractional gates.
Multi-module systems are a key focus. Flamingo, connecting two Heron modules via L-couplers, targets over 300 qubits and is slated for release in the second half of 2025. Crossbill, consisting of three Heron modules connected with M-couplers, offers greater density than the previous 1121-qubit Condor test chip.
For fault tolerance, IBM is developing a Q-LDPC error correction architecture requiring 6-way qubit connectivity. This necessitates new C-couplers and cryo-CMOS control chips for improved qubit quality and control signal management in larger systems.
100 x 100 Challenge and Runtime Performance
IBM achieved its 100 x 100 challenge, running a complex circuit on Heron R2 within a day. They also achieved a 50X improvement in CLOPS (Circuit Layer Operations per Second), optimizing classical computing tasks to improve runtime performance. This includes parallel compilation, parameterized circuits, and optimized data movement.
Software and Tool Enhancements
Qiskit saw major updates. Rewriting the transpilation pipeline in Rust led to a 60X speed improvement. The new Qiskit Transpiler Service uses AI to further reduce gate depth. Qiskit Functions provide pre-built functions for common tasks, while Qiskit Add-ons offer modular tools for algorithm design.
The Qiskit Code Assistant utilizes Generative AI to aid code development, and a debugger is in development. IBM also focuses on education and community building with learning paths, working groups, and hackathons.
IBM's Comprehensive Quantum Strategy
IBM is tackling all levels of the quantum tech stack, from hardware to community building. This comprehensive approach and tight integration between different levels create a competitive advantage.
