qubithubbarren-plateaus

Detects and quantifies vanishing gradients (barren plateaus) in variational quantum circuits by measuring gradient variance scaling with system size. Uses the parameter-shift rule and exponential decay fitting to determine if an ansatz is trainable.

Run Cite

No licence specified, so all rights are reserved by default — forking copies this circuit but grants you no rights to reuse it.

Framework: Cirq
Qubits: 6
Depth: 15
Gate set: RY, RZ, CNOT
Licence: Not specified
Version: v1
Updated: 3 days ago
Last run: 3 months ago

5 of 9 runs

Status	Backend	Shots	Wall time
Completed	Simulator cirq.simulator	1024	22.7 s
Completed	Simulator cirq.simulator	1024	22.7 s
Completed	Simulator cirq.simulator	1024	28.4 s
Completed	Simulator qiskit_aer	1024	21.9 s
Cancelled	Simulator cirq.simulator	1024	10m 58s

All 9 runs

Lineage

Not a fork.

No forks yet.

Suggested citation

@software{qubithub_barrenplateaus_2026,
  author = {QubitHub Circuits},
  title = {Barren Plateau Detection},
  year = {2026},
  version = {v1},
  url = {https://qubithub.co/qubithub/barren-plateaus},
}

Generated from this circuit's metadata. QubitHub does not mint DOIs, so this is not a registered identifier — check it against your venue's requirements before publishing.

Runs

Lineage

Suggested citation