Cirq Tutorials and Documentation (Google Quantum AI)
Google Quantum AI
Cirq
2 courses · 13 tutorials
Courses
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The Complete Quantum Computing Course with Python
Atil Samancioglu
Free Tutorials
- →
- intermediate
- 13 min read
Noise Modeling in Cirq
Model realistic quantum hardware noise in Cirq: depolarizing channels, amplitude damping, bit-flip channels, and using DensityMatrixSimulator for noisy circuit simulation.
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- advanced
- 70 minutes
Simulating Google Sycamore Circuits with Cirq
Build and simulate random quantum circuits on the Google Sycamore topology using Cirq. Implement FSimGate with Sycamore parameters, realistic noise models, and cross-entropy benchmarking (XEB) to measure circuit fidelity.
- →
- intermediate
- 20 min read
Hello World with TensorFlow Quantum
Build your first hybrid quantum-classical machine learning model with TensorFlow Quantum - create a parameterized circuit, wrap it as a Keras layer, and train it with gradient descent.
- →
- beginner
- 25 min read
Getting Started with Cirq
Learn Google's Cirq framework, build quantum circuits with fine-grained control over qubit placement and gate timing, and run them on Google's quantum hardware.
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- advanced
- 18 min read
VQE with Cirq and OpenFermion
Build a complete VQE implementation for H2 using Cirq's parametric gates, OpenFermion for the qubit Hamiltonian, scipy for classical optimization, and the parameter shift rule for exact gradients.
- →
- advanced
- 15 min read
Fast Clifford Simulation with Cirq
Use Cirq's CliffordSimulator to efficiently simulate large stabilizer circuits, enabling 100+ qubit experiments on a laptop.
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- intermediate
- 18 min read
Cirq QFT From Scratch: Controlled-Phase Rotations Step by Step
Build the Quantum Fourier Transform in Cirq one rotation at a time. Verifies against the classical DFT, explains the bit reversal, and shows where the speedup actually comes from.
- →
- advanced
- 35 min
Circuit Routing and Optimization in Cirq
Use Cirq's transformer framework to route circuits onto device topologies, optimize gate sequences, and reduce circuit depth.
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- intermediate
- 20 min read
QAOA for Max-Cut in Cirq
Implement the Quantum Approximate Optimization Algorithm to solve a small Max-Cut problem using Cirq, with parameterized circuits and classical optimization.
- →
- intermediate
- 13 min read
Advanced Gates and Custom Unitaries in Cirq
Define custom quantum gates in Cirq from unitary matrices, use the fermionic simulation gate (FSimGate), and build parameterized custom operations.
- →
- advanced
- 40 min
Noise Characterization in Cirq
Characterize noise in Cirq circuits using cross-entropy benchmarking and depolarizing error models. Validate against Google Quantum AI hardware specifications.
- →
- advanced
- 14 min read
Simulating Superconducting Qubit Physics in Cirq
Use Cirq's tools for simulating Google-style superconducting circuits: fSim gates, GridQubits, device topology, and the cross-entropy benchmarking protocol.
- →
- beginner
- 20 min read
Hello World in Cirq
Write your first quantum program in Cirq, create a Bell state using GridQubits and Moments, run it on the Cirq simulator.