NoiseModel#

class tqec.utils.NoiseModel(idle_depolarization, additional_depolarization_waiting_for_m_or_r=0, gate_rules=None, measure_rules=None, any_clifford_1q_rule=None, any_clifford_2q_rule=None)[source]#

Bases: object

Methods

__init__(idle_depolarization[, ...])

noisy_circuit(circuit, *[, system_qubits, ...])

Returns a noisy version of the given circuit, by applying the receiving noise model.

si1000(p)

Superconducting inspired noise.

uniform_depolarizing(p)

Near-standard circuit depolarizing noise.

Detailed methods

Parameters:

  • idle_depolarization (float)

  • additional_depolarization_waiting_for_m_or_r (float)

  • gate_rules (dict[str, NoiseRule] | None)

  • measure_rules (dict[str, NoiseRule] | None)

  • any_clifford_1q_rule (NoiseRule | None)

  • any_clifford_2q_rule (NoiseRule | None)

__init__(idle_depolarization, additional_depolarization_waiting_for_m_or_r=0, gate_rules=None, measure_rules=None, any_clifford_1q_rule=None, any_clifford_2q_rule=None)[source]#
Parameters:

  • idle_depolarization (float)

  • additional_depolarization_waiting_for_m_or_r (float)

  • gate_rules (dict[str, NoiseRule] | None)

  • measure_rules (dict[str, NoiseRule] | None)

  • any_clifford_1q_rule (NoiseRule | None)

  • any_clifford_2q_rule (NoiseRule | None)

noisy_circuit(circuit, *, system_qubits=None, immune_qubits=None)[source]#

Returns a noisy version of the given circuit, by applying the receiving noise model.

Parameters:

  • circuit (Circuit) – The circuit to layer noise over.

  • system_qubits (set[int] | None) – All qubits used by the circuit. These are the qubits eligible for idling noise.

  • immune_qubits (set[int] | None) – Qubits to not apply noise to, even if they are operated on.

Returns:

The noisy version of the circuit.

Return type:

Circuit

static si1000(p)[source]#

Superconducting inspired noise.

As defined in “A Fault-Tolerant Honeycomb Memory”: https://arxiv.org/abs/2108.10457

Small tweak from the paper: The measurement result is probabilistically flipped instead of the input qubit.

Parameters:

p (float)

Return type:

NoiseModel

static uniform_depolarizing(p)[source]#

Near-standard circuit depolarizing noise.

Everything has the same parameter p. Single qubit clifford gates get single qubit depolarization. Two qubit clifford gates get single qubit depolarization. Dissipative gates have their result probabilistically bit flipped (or phase flipped if appropriate).

Non-demolition measurement is treated a bit unusually in that it is the result that is flipped instead of the input qubit.

Parameters:

p (float)

Return type:

NoiseModel