DDS Architechture

Qubit control demands high-quality microwave signals. High phase noise induces decoherence and gate errors, while insufficient frequency coverage limits adaptability to different qubit resonance bands, restricting gate precision and system versatility.

Power Quantum leverages DDS technology with a simplified signal chain, high-sample-rate high-resolution DACs, a precision reference clock, and stable clock distribution network, suppressing noise and extending tunability. The system achieves -124 dBc/Hz @ 10 kHz phase noise and stable 0.01–9.8 GHz coverage, adapting to superconducting qubit multi-band control. This ensures repeatable gate calibration, clean qubit rotations, reliable readout discrimination, and a solid signal foundation for high-precision quantum control.

Qubit spin phase is susceptible to environmental noise and system drift. Phase mismatch disrupts gate timing and coherent manipulation, preventing precise multi-qubit control. Accurate real-time phase tracking is essential for long coherence and high-fidelity gates.

Power Quantum leverages DDS fine frequency and phase adjustment with a proprietary phase tracking algorithm to capture dynamic phase changes and rapidly compensate offsets. Combined with a dedicated instruction set, phase tracking executes in any pulse sequence gap and works with error correction and reset operations. The system maintains phase coherence over long sequences, significantly reducing calibration overhead and providing a fundamental guarantee for consistent gate fidelity in large-scale systems.

Conventional microwave generation involves complex chains where each drive channel needs independent local oscillators, mixers, filters, and amplifiers. As qubit count increases, equipment footprint multiplies, power consumption soars, and calibration costs rise dramatically.

Power Quantum leverages DDS technology, a high-density DAC array, compact clock distribution network, optimized PCB layout, and thermal design to achieve 128 independent output channels in a single chassis. This architecture significantly reduces cost, power, and footprint. Users focus directly on quantum algorithm implementation without complex multi-instrument synchronization, clearing physical and engineering barriers for scalable deployment and expansion.

Practical quantum computing requires parallel gate operations with real-time error detection. Conventional host-based sequential pulse configuration introduces excessive latency, failing to support large-scale real-time coordination.

Power Quantum, built on DDS with a dedicated instruction set, transfers pulse parameters directly to hardware, enabling real-time parsing of multi-channel instruction streams and single-cycle updates of frequency, phase, and amplitude. Combined with programmable trigger and feedback logic, the system executes conditional jumps and error correction within sub-microseconds, dramatically improving experimental efficiency and delivering core real-time control guarantees for large-scale quantum computing.