QuEra Launches 260-Qubit Gemini Quantum Computer for Logic Experiments

QuEra has introduced Gemini, a gate-model quantum computer featuring a dynamic qubit array (DQA™) with 260 neutral-atom qubits. This platform enables experimentation with logical qubits through parallel operations and all-to-all connectivity, operating at room temperature for compatibility with classical computation. Gemini delivers high-fidelity performance, achieving greater than 99% fidelity on 1-qubit gates and exceeding 99.2% on 2-qubit gates. This innovation is foundational to fault-tolerant quantum progress and designed to scale into logical-scale quantum machines, paving the path toward universal, error-corrected computation.

Gemini Quantum Computer: Architecture and Specifications

The Gemini quantum computer is a gate-model system utilizing 260 physical qubits of 87Rubidium via a neutral-atom platform. Its architecture features a Dynamic Qubit Array (DQA™) divided into two zones: storage for long coherence times and entanglement for gate operations. Notably, Gemini provides all-to-all qubit connectivity, enabling parallel operations and accelerating circuit execution. This design is intended to bridge the gap toward achieving quantum advantage through programmable qubit experiments.

Gemini delivers high-fidelity gate performance, achieving greater than 99.9% fidelity on global 1-qubit gates and exceeding 99.2% on global 2-qubit gates. SPAM fidelity also reaches 99.7%. The system supports a repetition rate of 1 shot per second and operates in digital gate-mode. Furthermore, QuEra demonstrated fault-tolerant magic-state distillation on Gemini, achieving higher fidelity than inputs and quadratic suppression of logical errors—a first for practical execution.

Designed for hybrid computing, Gemini integrates with room-temperature HPC systems and analog platforms via Bloqade™ emulation. Developer tools include Bloqade emulation, code templates, and SDKs. The system’s architecture is intended to scale into logical-scale quantum machines, enabling experimentation with fault-tolerance frameworks today. Users can request full technical specifications, including qubit layout and gate pipelines.

Gemini’s Performance and Fault-Tolerance Capabilities

Gemini achieves high-fidelity gate operations crucial for reliable quantum computation. Specifically, the system delivers greater than 99.9% fidelity on global 1-qubit gates and exceeds 99.2% on 2-qubit gates. Additionally, SPAM fidelity also surpasses 99.7%. These performance levels, combined with parallel 2-qubit gate pairs numbering 20, accelerate circuit execution and are foundational for exploring more complex quantum algorithms.

Gemini’s architecture supports fault-tolerant progress through a dynamic qubit array (DQA™) with 260 neutral-atom qubits. The DQA™ shuttles qubits between two zones – storage and entanglement – enabling fault-resilient mapping and flexibility. Recent collaboration with Harvard and MIT demonstrated magic-state distillation within the logical qubit layer, achieving higher fidelity than inputs and quadratic suppression of logical errors – a first for practical fault-tolerant magic state generation.

The system’s design facilitates experimentation with fault-tolerance frameworks and is built to scale toward logical-scale quantum machines. Gemini isn’t simply for experimentation; it supports an architecture intended for future universal, error-corrected computation. The system utilizes 87Rubidium qubits with all-to-all connectivity and operates in digital gate-mode, alongside a GPU-accelerated Bloqade™ digital-mode emulator.