NISQ

Free Tutorials

• • intermediate
  • 25 min read

  Noise Simulation in PyQuil

  Learn to simulate realistic quantum noise in PyQuil using Kraus operators, depolarizing channels, and T1/T2 decoherence models. Compare ideal and noisy Bell state results on the QVM.

  →
• • intermediate
  • 30 min read

  QAOA for MaxCut: A Complete Qiskit Walkthrough

  Build the Quantum Approximate Optimization Algorithm from scratch in Qiskit to solve MaxCut on small graphs. Understand the circuit structure, cost function, and how to tune the depth parameter p.

  →
• • beginner
  • 20 min

  Quantum Annealing vs Gate-Based Quantum Computing

  A clear comparison of quantum annealing and gate-based quantum computing: how they work, what problems they solve best, and when to choose each approach.

  →
• • advanced
  • 35 min read

  Quantum Error Mitigation: ZNE vs PEC vs Clifford Data Regression

  A practical comparison of the three main quantum error mitigation strategies (zero-noise extrapolation, probabilistic error cancellation, and Clifford data regression) with working Mitiq code and guidance on when to use each.

  →
• • intermediate
  • 14 min read

  Error Mitigation with Mitiq: Zero-Noise Extrapolation

  Use Mitiq's zero-noise extrapolation to reduce the impact of hardware noise on expectation values without full quantum error correction.

  →
• • intermediate
  • 22 min read

  Noise and Error Mitigation in PennyLane

  Understand how noise affects quantum circuits in the NISQ era and implement zero-noise extrapolation (ZNE) and probabilistic error cancellation using PennyLane.

  →
• • advanced
  • 14 min read

  Advanced Error Mitigation in Qiskit Runtime

  Use Qiskit Runtime's built-in error mitigation options: resilience levels, zero-noise extrapolation, and Probabilistic Error Cancellation in the Estimator primitive.

  →
• • intermediate
  • 15 min read

  Variational Quantum Eigensolver (VQE) Explained

  How VQE works: the variational principle, ansatz design, classical optimizer loop, and a complete Qiskit implementation for finding the ground state of a simple Hamiltonian.

  →