Black Opal interface

Defeat noise and errors
in today’s quantum computers

Through a highly intuitive graphical interface with stunning visualizations, BLACK OPAL helps you build intuition for how noise impacts today’s NISQ-era quantum computers, and deploys professional-grade quantum controls to defeat errors and decoherence. Extract maximum performance and more reliable results from all types of quantum computers.

Get started with Q-CTRL today

Don’t wait to take control of your quantum future with Q-CTRL.
Sign up and try our suite of professional-grade products free, for 15 days.

  • Free 15-day trial
  • Easy to activate
  • Cancel anytime

Take control of your quantum future with BLACK OPAL

Sign up and try our suite of professional-grade products, free for 15 days,
including premium access to BLACK OPAL.



Our intuitive, hardware-agnostic software is delivered via an advanced cloud platform, so you’ll always have the latest version and newly released features of Q-CTRL’s powerful quantum control solutions.

  • Free 15-day trial
  • Easy to activate
  • Cancel anytime
* BLACK OPAL is available to try for free for 15 days for a limited time


Learn how powerful quantum control can be.

  • BLACK OPAL modern web application
  • Discover the impact of noise in quantum algorithms and learn how to characterize noise in QCs
  • Build intuitive, interactive visualizations
  • Explore a library of noise-resistant controls for quantum computers and quantum sensors
  • Create numerically optimized quantum logic in a few clicks
  • Download controls in a format best suited to your needs


Ben McCarty, iDefense | Accenture Security
This is beautiful and showing the rotation of the qubit is exactly what I was struggling with ...this is so great it makes me want to cry

Get advanced capability across quantum technologies

Q-CTRL deploys decades of quantum control engineering expertise through our suite of intuitive software products.


Use our Python package to harness the power of Q-CTRL’s tools in your own research, or integrate into hardware.

Open Controls

Contribute to the most comprehensive open-source library of quantum control solutions.


Improve algorithm performance and error-robustness on today's noisy quantum computers and the fault-tolerant architectures of the future.