The stories
behind the builds.
Project write-ups from the people who made them, guides to get you started,
and the latest from the community.
Browse by theme
See everything being built across each space.
Expert notes
Expert notes and explainers. Real code, real figures, openly shared.
Rabi Oscillations: Visualizing Excited-State Probability
A primer on the quantum dynamics of a driven two-level system, visualizing excited-state probability under the rotating-wave approximation (RWA).
Cross-Resonance Gate: Slices and Heatmaps
How the ZX entangling rate and static ZZ vary with detuning and drive amplitude, plotted from the PRA 2020 cross-resonance formulas.
Pulse Shapes and Envelopes, Visualized
How microwave pulses are shaped to control a quantum chip: Gaussian and sinusoidal envelopes, and the modulated pulses behind common gates.
Wigner Functions for Single-Qubit Quantum Gates
Pauli rotations rendered as Wigner functions, animated in two and three dimensions, with the density-operator and Bloch-vector groundwork.
A Sampling-Budget & Bit-String Analogy for Qubit Classifications
A Sampling-Budget & Bit-String Analogy for Qubit Classifications. A notebook by Onri Jay Benally, republished with permission.
What's happening
Open calls, programs, and what's new on Qollab.
Creative Challenge: submissions closed
Grants and IonQ compute credits for open-source quantum projects. The call is closed — see what the funded teams built.
Become a Qollab Ambassador
Champion quantum in your community and earn monthly IonQ hardware credits.
What's new on Qollab
Playground upgrades, new features, and shipped improvements. The running changelog.