quantum_algorithms
VQE · QAOA · QPE · Grover · HHL
Canonical quantum algorithm library used by downstream packages — variational, phase-estimation, amplitude-amplification.
quantum_inspired
6-category QI suite
Tensor-network sims, simulated bifurcation, coherent Ising, MPS/TTN — classical engines that hit quantum-class results on today's hardware.
annealing
QUBO builder · D-Wave · SA
QUBO/Ising problem builder with D-Wave Ocean + simulated annealing + chain-break repair. Portfolio, logistics, molecular-docking QUBO examples included.
analog — neutral atoms
Pasqal Pulser · QuEra Bloqade
Analog neutral-atom quantum computing: Rydberg array layouts, pulse programs, adiabatic schedules. Pasqal + QuEra mirror.
photonic — CV quantum
Gaussian states · bosonic modes
Continuous-variable photonic quantum: Gaussian states on N bosonic modes, squeezing, homodyne, photon-number — Xanadu-style.
noise_models
Kraus · density matrix
Kraus-channel noise models and a mixed-state simulator — depolarizing / amplitude damping / phase damping / Pauli.
error_mitigation
ZNE · PEC · TREx · Q-CTRL
IBM Runtime Primitive-style error mitigation + Q-CTRL Fire Opal mirror (twirling, dynamical decoupling, autosuite).
qec — error correction
surface code · stabilizers
Toy surface code, stabilizer formalism, syndrome extraction, minimum-weight-perfect-matching decoder.