Gustavo C. Amaral et al., arXiv:2508.11023
(2025).
Qblox quantum control stack, the Cluster, integrates electronics and software needed for optical setups to control and readout color centers. This integrated solution streamlines experiments and finds applications in quantum sensing, computing, and communication. The Cluster's architecture includes advanced sequence processors, AWGs, local oscillators, analyzers, and digitizers, providing scalability and configurability. Un-levelled noise performance of analog channels, combined with the digital channels, makes Qblox Cluster the favourite choice of leading labs and centers for next-level experiments on optical setups for quantum computing.
Drive high-fidelity MW transitions through superior SNR and exceptionally clean analogue signal generation.
Run qubit calibration routine, such as g2 (𝜏), ODMR, and coherent measurements in a parameterized fashion
Maximize PL contrast and through put through multi-tone excitation by multiplexing up to eight frequencies onto asingle output channel, enabling simultaneous coverage of all hyperfine splittings.
Benchmark qubit performance via single-qubit randomized benchmarking or gate-set tomography.
Ensure perfect synchronization and control across yoursystem with phase-coherent operation over multiple channels, enabling seamless multi-qubit gates.
Enables driving multiple qubits via a single antenna by outputting up to 8 tones per output channel.
Assess qubit performance by using either two-qubit randomized benchmarking or gate-set tomography.
Facilitates deterministic quantum operations, including heralded entanglement and charge-state control, through the integration of high-speed QTM time-tagging and low-latency feedback loops.
Measure the color center spin state via thehigh-resolution time tagger, enabling both simplephoton counting and advanced time-resolved photoluminescence.
Ultra-low latency feedback based on photoncount or time tag enables adaptive and conditional measurements, dynamically adjusting sequencesbased on real-time quantum state detection.
Automatic synchronization of all channelsless than << 1 ns with ps-level jitter.
Built-in scalable feedback infrastructure with all-to-all connectivityunder 400 ns for conditional playback and branching.
Lock multiple independent Qblox Clusters to a shared external reference clock to achieve deterministic, phase-stable control across distant quantum nodes.
UseSYNQ to align sequencers across Clusters withnanosecond precision, guaranteeing perfectly timed optical pulses, microwave control signals,and time-tagged measurements.
Leverageintegrated time-tagging modules combinedwith the LINQ, unlocking low-latency feedbackand deterministic entanglement operations.
