The Zurich Instruments QCCS represents the state of the art for controlling fluxonium-based quantum processors. It provides users with a flexible yet scalable system covering all needs for qubit control, readout, and feedback. Setups of all sizes are controlled through the LabOne Q software, providing hardware abstraction, an experiment control framework, and an interface to higher software layers. Zurich Instruments' solutions provide key features that particularly benefit fluxonium qubit experiments in the following experimental methods: Qubit control and readout - Fast and parallel spectroscopy and coherence time measurements of fluxonium qubits and their microwave readout resonators - Control of the computational basis states with the HDAWG Arbitrary Waveform Generator through direct digital synthesis below 750 MHz - Transition to higher, non-computational levels up to 8.5 GHz driven by the SHFQC+, with a direct extension to higher frequencies using external microwave mixers - Control of cryogenic quantum-limited microwave parametric amplifiers by using the SHFQC+ Qubit Controller with the SHFPPC Parametric Pump Controller - Fast and accurate magnetic flux control for fluxoniums using the HDAWG - Efficient system calibration orchestrated by the quantum control software framework LabOne Q High-fidelity two-qubit gates - Microwave pulse sequences generated by the SHFQC+ for controlling capacitive, inductive, or qubit-based coupler elements between fluxoniums - Leading output signal-to-noise ratio with the SHFQC+ for highest entanglement gate fidelities - Multiple instruments synchronized by the PQSC or QHub for controlling scalable fluxonium quantum processors Measurement-based qubit reset - Low-latency feedback within the SHFQC+ for real-time adaptive microwave control pulse generation based on qubit readout results - Global low-latency feedback via the PQSC for measurement-based control sequence generation using the SHFQC+ and the HDAWG - Scalable quantum feedback system in a star network architecture centrally synchronized by the PQSC or QHub The Benefits of Choosing Zurich Instruments - Rely on excellent analog signal properties for fluxonium qubit control with the HDAWG: low noise floor, low crosstalk, high vertical resolution - Benefit from our application know-how in a broad spectrum of quantum physics and engineering, including different architectures of superconducting quantum computing - Rely on a partner with long-standing excellence in test and measurement instrumentation and a renowned customer base in quantum information technologies - Get all microwave control and readout channels for fluxonium qubits in one solution, with full flexibility in frequency - Program your experiments efficiently and intuitively with LabOne Q without worrying about hardware details - Build on a clear roadmap for scaling and for integrating high-level quantum stack software, e.g. Qiskit - Maximize control and readout fidelity with state-of-the-art signal purity and a 1 GHz instantaneous bandwidth - Get access to powerful low-latency feedback methods via a high-level programming interface
