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Quantum & Qollab

Research notes and opinions on quantum, plus announcements from the Qollab team.

Qollab x IonQ Hackathon 2026: global winners

Quantrain, SABRE-Q and Optogenetic Quantum Brain take 1st, 2nd and 3rd place.

Hackathon · October 29, 2026

Qollab x IonQ Hackathon 2026: global specialty awards

The best project in each theme, the most novel, the most impact and the best documentation.

Hackathon · October 28, 2026

Qollab x IonQ Hackathon 2026: local winners

The winning projects at 22 local nodes.

Hackathon · October 27, 2026

Quantum cloud computing services, compared

Which quantum computers you can reach on Amazon Braket, Azure, IBM and the makers’ own clouds, where hardware time is free, and how to send a first job.

Guide · October 21, 2026 · Nicolaas Spijker

Every project from the Qollab x IonQ Hackathon 2026

300+ projects entered by teams at 22 nodes. Browse them A to Z, or filter by node, track and theme.

Hackathon · October 21, 2026

What are quantum computers used for today?

What quantum computers do in chemistry, cryptography, optimization, finance and machine learning today and what comes next for each, with projects to run.

Guide · October 19, 2026 · Nicolaas Spijker

Free quantum computer simulators you can use today

Run a quantum circuit free on 14 simulators, then compare Quirk, Qiskit Aer, Cirq, PennyLane, Braket, IonQ and more by method, qubits and free terms.

Guide · October 15, 2026 · Nicolaas Spijker

Quantum programming languages and SDKs, compared

Qiskit, Cirq, PennyLane, Q#, OpenQASM and five more toolkits compared on one Bell state. The Qiskit, OpenQASM and Cirq versions run in your browser on Qollab.

Guide · October 13, 2026 · Nicolaas Spijker

Can you buy a quantum computer? What one costs, and how to run one free

What a quantum computer costs to buy, what a minute or a shot costs to rent on IBM, Braket, Azure and IonQ, and how to run a real one free. Every price dated.

Guide · September 18, 2026 · Nicolaas Spijker

Google withheld an ECDSA circuit

A forged zero-knowledge proof, an independent reconstruction, and an agent-driven leaderboard. What the episode says about checkable work.

Opinion · August 26, 2026

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.

Expert note · August 6, 2026 · Onri Jay Benally

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.

Expert note · August 6, 2026 · Onri Jay Benally

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.

Expert note · August 6, 2026 · Onri Jay Benally

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).

Expert note · July 15, 2026 · Onri Jay Benally

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.

Expert note · July 15, 2026 · Onri Jay Benally

What's new on Qollab

Playground upgrades, new features, and shipped improvements. The running changelog.

Product updates · June 24, 2026

Meet the Spring 2026 cohort

13 teams building on real IonQ hardware: tools, music, visualizations, and games. The lineup, project by project.

Roundup · May 5, 2026

Become a Qollab Ambassador

Champion quantum in your community and earn monthly IonQ hardware credits.

Program · May 1, 2026

Creative Challenge: submissions closed

Grants and IonQ compute credits for open-source quantum projects. The call is closed — see what the funded teams built.

Open call · April 7, 2026