density matrix
0 courses · 4 tutorials
Free Tutorials
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- intermediate
- 25 min read
Density Matrices and Mixed States in Qiskit
Understand density matrices, mixed states, and the partial trace. Essential for reasoning about noise, decoherence, and real hardware, with working Qiskit examples.
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- advanced
- 40 min
Quantum State Tomography with Qiskit
Reconstruct unknown quantum states using state tomography protocols in Qiskit. Includes SPAM error analysis and practical considerations for real hardware.
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- advanced
- 30 min read
Quantum State Tomography with Qiskit
Reconstruct an unknown quantum state from measurement data using Qiskit's StateTomography workflow. Understand when tomography is useful and when it is not.
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- 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.