Search results for: Alice & Bob

Alice & Bob has reported a 9.25x speedup in quantum error correction (QEC) decoding simulations by utilizing the NVIDIA CUDA-Q platform. The runtime for decoding simulated syndrome data was reduced from 18 hours and 2 minutes on a CPU-based implementation to 1 hour and 57 minutes using GPU-accelerated simulation. This benchmark compared the performance of an NVIDIA GH200 Grace Hopper system against an AMD Ryzen™ 9 9950X 16-core CPU across 100,000 simulated shots. The results indicate that the GPU-accelerated approach maintains identical logical error performance compared to the CPU version, with no degradation in decoding accuracy. The simulation focused on "Elevator Codes," [...]

Alice & Bob has introduced "Elevator Codes," a quantum error correction (QEC) architecture designed to minimize the physical hardware required for fault-tolerant computing. Detailed in a technical study authored by Diego Ruiz and Peter Shanahan, the architecture utilizes the inherent noise bias of cat qubits to address bit-flip and phase-flip errors at different layers. By concatenating classical repetition codes with high-rate outer codes, the design achieves a 10,000x reduction in logical error rates while requiring only 3x more physical qubits than the company’s current baseline repetition code. Standard fault-tolerant approaches often rely on 2D surface codes to correct both bit-flips and [...]

Alice & Bob, a quantum computing company, has announced a plan to hire 100 new employees by mid-2026. This workforce expansion is intended to support technology development and business expansion, and will nearly double the company's current headcount. The hiring plan targets 90 technical roles, including scientists, engineers, and technicians in physics, quantum error correction, firmware and software development, machine learning, and quantum hardware infrastructure. The remaining 10 hires will be for business and management roles. The workforce expansion follows the company’s €100 million ($118M) Series B funding round and the launch of a quantum laboratory in Paris with a nanofabrication [...]

Scientists from Alice & Bob, a quantum computing company, and Inria, France’s national institute for research in digital science and technology, have submitted a new study for peer review. The study details a new quantum error correction scheme, dubbed the “unfolded code,” which presents a method for producing magic states on superconducting quantum computers. This research addresses the challenge of magic state preparation, a resource-intensive aspect of quantum computing necessary for achieving a universal fault-tolerant gate set. Their new approach, outlined in the paper “Unfolded distillation: very low-cost magic state preparation for biased-noise qubits,” leverages the noise bias of cat qubits, [...]