A differentiable toolkit for modelling quantum devices
Recording, slides, five worked guides, and the paper from the SQA 2026 talk.
01 · RECORDING
Watch the talk
A differentiable toolkit for modelling quantum devices · 10:58
02 · GUIDES
Five guides from the talk
Start by defining and inspecting a chip. Then move through static spectra, dynamics and readout, chip transformations, and differentiable losses. Each guide starts with a small runnable example and shows its output.
01 · Define and inspect a chip
Declare two devices and one coupling, inspect the Hamiltonian, fit dressed targets, and import a scqubits model.
02 · Statics and parameter studies
Sweep one parameter, inspect an avoided crossing, then compare fluxonium spectroscopy and readout with published data.
03 · Dynamics, pulses and readout
Schedule one pulse, study leakage and open-system dynamics, batch initial states, and read conditional resonator paths.
04 · Chip transformations
Rebind and serialize a chip, eliminate modes, partition components, and validate a scheduled active-patch reduction.
05 · Differentiability
Differentiate a static loss, fit published fluxonium data, then differentiate one sequence and a shared multi-sequence loss.
03 · READ MORE
The paper and the conventions
What the toolkit implements, how it is validated, and what it deliberately leaves out.
Try it on your own chip
Describe one chip, then analyze, reduce, sequence, simulate, sweep or differentiate it. If quchip cannot yet model your chip, open an issue on GitHub.
$ pip install quchipcopy
source on GitHub