Free Resources
Cheat sheets and dictionaries
Two one-page cards (gates, complexity). Everything else here is a framework dictionary, the same pages as under Reference, not a printable cheat sheet.
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Qiskit reference
QuantumCircuit, gates, AerSimulator, SamplerV2, transpile, and common patterns.
- Python
- IBM
- Beginner-friendly
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Cirq reference
LineQubit, GridQubit, Circuit, gates, Simulator, parameterised sweeps.
- Python
- Hardware-aware
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PennyLane reference
QNode, devices, gates, measurements, gradients, optimizers, templates.
- Python
- Xanadu
- QML
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Amazon Braket reference
Circuit, LocalSimulator, AwsDevice, gates, FreeParameter, result objects.
- Python
- AWS
- Multi-hardware
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PyQuil reference
Program, gates, MEASURE, declare, QVM, WavefunctionSimulator, Quilc.
- Python
- Rigetti
- Quil
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tket reference
Circuit, gates, compiler passes, AerBackend, Quantinuum hardware.
- Python
- Quantinuum
- Compiler
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Q# reference
Operations, types, gates, measurement, adjoint/controlled, Azure Quantum.
- Q#
- Microsoft
- Azure
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D-Wave Ocean reference
BQM, QUBO, CQM, SimulatedAnnealingSampler, LeapHybridSampler, results.
- Python
- D-Wave
- Optimization
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OpenQASM 3 reference
qreg, creg, gate definitions, mid-circuit measurement, classical control flow, subroutines.
- OpenQASM
- IBM
- Hardware-neutral
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Strawberry Fields reference
Program, ops, engines, Gaussian states, measurement, Fock backend, photonic circuits.
- Python
- Xanadu
- Photonic
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Stim reference
stim.Circuit, gate types, detectors, observables, sampling, DEM, PyMatching decoding.
- Python
- Error Correction
- Research
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Quantum Gates Cheat Sheet
Every standard gate: matrix, symbol, effect, and equivalent code in Qiskit and Cirq.
- Fundamentals
- Math
- All frameworks
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Quantum Algorithm Complexity
Shor, Grover, VQE, QAOA, HHL - speedups, problem types, qubit requirements.
- Algorithms
- Complexity
- Research