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.

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

Benefits

Optimal Signal
Quality

Ultra-stable voltage source delivering ultra-low noise, minimal crosstalk, and minimal transients for reliable qubit operation.

Compact and
Versatile

24 DC voltage sources (±10 V) with built-in current sensing and individual sub-MHz function generators, all in one rack unit, reducing the need for additional instruments.

Timesaving

Multi-dimensional gate electrode sweeps are performed in less than a second. The advanced triggering system allows the coordination of signals internally or externally with sub-μs precision.

Easy to Use

Controlled via SCPI, Python, and QCoDeS, with example Jupyter notebooks for quick setup. Includes low-noise cable assembly and setup instructions. Supports advanced QUA integration through the QUAM framework for optimized, synchronized quantum experiments.