cudaq — CUDA-Q-class
@kernel DSL · VQE/UCCSD · noise + DM backend
CUDA-Q-compatible hybrid quantum-classical model: the @cudaq.kernel DSL, canonical gate set, spin Hamiltonians, exp_pauli, and sample/observe/run/get_state on a numpy state-vector engine (deuteron VQE reproduces -1.7488). Adds the built-in kernel library (hwe / UCCSD / QFT / GHZ), a chemistry module (H2 Hamiltonian + VQE matching exact diagonalization), and a density-matrix engine with NoiseModel (bit-flip / depolarizing / amplitude-damping Kraus channels). Ships the real backend registry: qpp-cpu / nvidia / nvidia-mgpu / tensornet / density-matrix-cpu / stim.
Source · soon
superconducting — circuit design
transmon · flux-tunable · tunable coupler
A dependency-light design toolkit for transmon processors: charge-basis Cooper-pair-box diagonalization (f01, anharmonicity, charge dispersion), flux-tunable SQUID transmons (dual sweet spots, tuning range), dispersive readout (χ shift, Purcell T1), two-qubit coupling (iSWAP, static ZZ, cross-resonance), a tunable coupler with a zero-ZZ off point (Sycamore-style, on/off ~2000), and a chip designer with frequency-collision design rules (Hertzberg-style) + coherence budgeting → gate-fidelity limits. Comparable to the analysis layer of Qiskit Metal / scQubits.
Source · soon
quantum_algorithms
VQE · QAOA · QPE · Grover · HHL
Canonical quantum algorithm library used by downstream packages — variational, phase-estimation, amplitude-amplification.
Source · soon
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.
Source · soon
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.
Source · soon
analog — neutral atoms
Pasqal Pulser · QuEra Bloqade
Analog neutral-atom quantum computing: Rydberg array layouts, pulse programs, adiabatic schedules. Pasqal/QuEra-class.
Source · soon
photonic — CV quantum
Gaussian states · bosonic modes
Continuous-variable photonic quantum: Gaussian states on N bosonic modes, squeezing, homodyne, photon-number — Xanadu-style.
Source · soon
noise_models
Kraus · density matrix
Kraus-channel noise models and a mixed-state simulator — depolarizing / amplitude damping / phase damping / Pauli.
Source · soon
error_mitigation
ZNE · PEC · TREx · Q-CTRL
IBM Runtime Primitive-style error mitigation + Fire Opal-class (twirling, dynamical decoupling, autosuite).
qec — error correction
surface code · stabilizers
Toy surface code, stabilizer formalism, syndrome extraction, minimum-weight-perfect-matching decoder.
Source · soon