QDAC-II Compact:
Low-Noise Single Rack Unit DAC
Advanced DC and Low-Frequency Voltage Source for Ultra-Stable Control of Quantum Devices
QDAC-II Compact is an ultra-stable voltage source designed for the precise and accurate initialization of quantum devices, setting a new benchmark in the field. With unmatched channel density, it delivers 24 channels in a compact, single-rack-unit form factor. Seamlessly integrated with the OPX1000 Hybrid Control platform, QDAC-II Compact provides the most comprehensive hybrid control stack for high-performance quantum computing.
Compact and Multifunctional
Harness the power of 24 ultra-precise DC voltage sources (±10 V), complete with built-in current sensing and sub-MHz function generators. Its 1U design minimizes the need for space, making it perfect for compact quantum labs.
Fast Tune-Up and Operation Point Control
Performs fast multi-dimensional gate voltage sweeps using a 300 kHz output filter. Once at your operation point, the QDAC is switchable to an ultra-low noise DC voltage with a 10 Hz output filter and 25-bit resolution, with minimal transients.
Seamless Integration with OPX1000 and Smooth Scalability
QDAC-II Compact seamlessly integrates and synchronizes with the OPX1000 Hybrid Control platform. Scale your quantum control infrastructure by stacking multiple OPX1000 hybrid controllers and QDAC-II Compact units in any combination.
Advanced Synchronization and Triggering
Synchronize multiple QDAC-II Compact units or external devices with sub-μs accuracy. With an advanced triggering system and external clock compatibility, it ensures seamless coordination for complex signal generation and precise integration in large-scale setups.
QDAC-II
QDAC-II is also available in its 4U original QDAC-II hardware version, with 24 BNC connectors.
ILLUSTRATION
Video
Key Features
- Ultra-low noise and ultra-stable 24-channel voltage source in one rack unit
- Unique low pass filter with 3 ranges that can be switched between with minimal transients: cut-off 300 KHz, cut-off 10 KHz, and cut-off 10 Hz
- 25-bit resolution in DC mode (10 Hz cut-off), 20-bit in medium and high bandwidth mode (10 kHz and 300 kHz cut-off)
- 1M samples per second per channel
- Each channel has multiple standard waveform generators and an arbitrary waveform generator
- Individual high-resolution low-frequency current sensors on every channel, measuring current simultaneously on all channels
- Advanced triggering and synchronization functions between channels with sub-microsecond precision
Efficiently controlling multiple frequency-tunable transmon qubits can be achieved with QM's OPX and QDevil's QDAC. QDAC's high-precision and low-noise bias voltage ensures accurate qubit frequency control without compromising coherence times, while QM's OPX offers advanced control solutions that are user-friendly and require minimal technical expertise. I highly recommend using OPX and QDAC together to streamline your lab processes and advance your quantum computing research.
Benefits
Multiple Waveforms
Each of the 24-channels has five voltage generators working in parallel: one for DC, a sine, triangle and square wave generator, and an arbitrary waveform generator (1 million points/second)
Built-in Sensitive Current Sensors
Each channel includes a DC current sensor with a resolution down to a few tens of pA, typically used for gate leakage detection and with sample rates up to 3 kHz
Ultra Stable Voltage Source
Low noise floor (<20 nV/√Hz), ensuring reliable qubit operation points
Reduces Experiment Setup Costs
Built-in function generators (including AWG) and current sensors reduce the need for additional instruments
Blog
Blog
Turning Latency into an Advantage: Continuous Calibration for Neutral-Atom Quantum Computers
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Scientific Publications
Loss Mechanisms in High-coherence Multimode Mechanical Resonators Coupled to Superconducting Circuits
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Scientific Publications
Learning Nonlinear Heterogeneity in Physical Kolmogorov-Arnold Networks
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