"""Helper functions to update parameters in platform."""
from typing import Union
import numpy as np
from qibolab import pulses
from qibolab.native import VirtualZPulse
from qibolab.platform import Platform
from qibolab.qubits import QubitId, QubitPairId
CLASSIFICATION_PARAMS = [
"threshold",
"iq_angle",
"mean_gnd_states",
"mean_exc_states",
"classifier_hpars",
]
[docs]def readout_frequency(freq: float, platform: Platform, qubit: QubitId):
"""Update readout frequency value in platform for specific qubit."""
mz = platform.qubits[qubit].native_gates.MZ
freq_hz = int(freq)
mz.frequency = freq_hz
if mz.if_frequency is not None:
mz.if_frequency = freq_hz - platform.qubits[qubit].readout.lo_frequency
platform.qubits[qubit].readout_frequency = freq_hz
[docs]def bare_resonator_frequency(freq: float, platform: Platform, qubit: QubitId):
"""Update rbare frequency value in platform for specific qubit."""
platform.qubits[qubit].bare_resonator_frequency = int(freq)
[docs]def readout_amplitude(amp: float, platform: Platform, qubit: QubitId):
"""Update readout amplitude value in platform for specific qubit."""
platform.qubits[qubit].native_gates.MZ.amplitude = float(amp)
[docs]def readout_attenuation(att: int, platform: Platform, qubit: QubitId):
"""Update readout attenuation value in platform for specific qubit."""
platform.qubits[qubit].readout.attenuation = int(att)
[docs]def drive_frequency(freq: Union[float, tuple], platform: Platform, qubit: QubitId):
"""Update drive frequency value in platform for specific qubit."""
if isinstance(freq, tuple):
freq = freq[0]
freq = int(freq)
platform.qubits[qubit].native_gates.RX.frequency = int(freq)
platform.qubits[qubit].drive_frequency = int(freq)
[docs]def drive_amplitude(amp: Union[float, tuple], platform: Platform, qubit: QubitId):
"""Update drive frequency value in platform for specific qubit."""
if isinstance(amp, tuple):
amp = amp[0]
platform.qubits[qubit].native_gates.RX.amplitude = float(amp)
[docs]def drive_duration(duration: Union[int, tuple], platform: Platform, qubit: QubitId):
"""Update drive duration value in platform for specific qubit."""
if isinstance(duration, tuple):
duration = duration[0]
platform.qubits[qubit].native_gates.RX.duration = int(duration)
[docs]def crosstalk_matrix(
matrix_element: float, platform: Platform, qubit: QubitId, flux_qubit: QubitId
):
"""Update crosstalk_matrix element."""
platform.qubits[qubit].crosstalk_matrix[flux_qubit] = float(matrix_element)
[docs]def iq_angle(angle: float, platform: Platform, qubit: QubitId):
"""Update iq angle value in platform for specific qubit."""
platform.qubits[qubit].iq_angle = float(angle)
[docs]def threshold(threshold: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].threshold = float(threshold)
[docs]def mean_gnd_states(gnd_state: list, platform: Platform, qubit: QubitId):
"""Update mean ground state value in platform for specific qubit."""
platform.qubits[qubit].mean_gnd_states = gnd_state
[docs]def mean_exc_states(exc_state: list, platform: Platform, qubit: QubitId):
"""Update mean excited state value in platform for specific qubit."""
platform.qubits[qubit].mean_exc_states = exc_state
[docs]def readout_fidelity(fidelity: float, platform: Platform, qubit: QubitId):
"""Update fidelity of single shot classification."""
platform.qubits[qubit].readout_fidelity = float(fidelity)
[docs]def assignment_fidelity(fidelity: float, platform: Platform, qubit: QubitId):
"""Update fidelity of single shot classification."""
platform.qubits[qubit].assignment_fidelity = float(fidelity)
[docs]def virtual_phases(phases: dict[QubitId, float], platform: Platform, pair: QubitPairId):
"""Update virtual phases for given qubits in pair in results."""
virtual_z_pulses = {
pulse.qubit.name: pulse
for pulse in platform.pairs[pair].native_gates.CZ.pulses
if isinstance(pulse, VirtualZPulse)
}
for qubit_id, phase in phases.items():
if qubit_id in virtual_z_pulses:
virtual_z_pulses[qubit_id].phase = phase
else:
virtual_z_pulses[qubit_id] = VirtualZPulse(
phase=phase, qubit=platform.qubits[qubit_id]
)
platform.pairs[pair].native_gates.CZ.pulses.append(
virtual_z_pulses[qubit_id]
)
[docs]def CZ_duration(duration: int, platform: Platform, pair: QubitPairId):
"""Update CZ duration for specific pair."""
for pulse in platform.pairs[pair].native_gates.CZ.pulses:
if pulse.qubit.name == pair[1]:
pulse.duration = int(duration)
[docs]def CZ_amplitude(amp: float, platform: Platform, pair: QubitPairId):
"""Update CZ amplitude for specific pair."""
for pulse in platform.pairs[pair].native_gates.CZ.pulses:
if pulse.qubit.name == pair[1]:
pulse.amplitude = float(amp)
[docs]def t1(t1: int, platform: Platform, qubit: QubitId):
"""Update t1 value in platform for specific qubit."""
if isinstance(t1, tuple):
platform.qubits[qubit].T1 = int(t1[0])
else:
platform.qubits[qubit].T1 = int(t1)
[docs]def t2(t2: int, platform: Platform, qubit: QubitId):
"""Update t2 value in platform for specific qubit."""
if isinstance(t2, tuple):
platform.qubits[qubit].T2 = int(t2[0])
else:
platform.qubits[qubit].T2 = int(t2)
[docs]def t2_spin_echo(t2_spin_echo: float, platform: Platform, qubit: QubitId):
"""Update t2 echo value in platform for specific qubit."""
if isinstance(t2_spin_echo, tuple):
platform.qubits[qubit].T2_spin_echo = int(t2_spin_echo[0])
else:
platform.qubits[qubit].T2_spin_echo = int(t2_spin_echo)
[docs]def drag_pulse_beta(beta: float, platform: Platform, qubit: QubitId):
"""Update beta parameter value in platform for specific qubit."""
pulse = platform.qubits[qubit].native_gates.RX.pulse(start=0)
rel_sigma = pulse.shape.rel_sigma
drag_pulse = pulses.Drag(rel_sigma=rel_sigma, beta=beta)
platform.qubits[qubit].native_gates.RX.shape = repr(drag_pulse)
[docs]def sweetspot(sweetspot: float, platform: Platform, qubit: QubitId):
"""Update sweetspot parameter in platform for specific qubit."""
platform.qubits[qubit].sweetspot = float(sweetspot)
[docs]def frequency_12_transition(frequency: int, platform: Platform, qubit: QubitId):
platform.qubits[qubit].native_gates.RX12.frequency = int(frequency)
[docs]def drive_12_amplitude(amplitude: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].native_gates.RX12.amplitude = float(amplitude)
[docs]def twpa_frequency(frequency: int, platform: Platform, qubit: QubitId):
platform.qubits[qubit].twpa.local_oscillator.frequency = int(frequency)
[docs]def twpa_power(power: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].twpa.local_oscillator.power = float(power)
[docs]def anharmonicity(anharmonicity: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].anharmonicity = int(anharmonicity)
[docs]def asymmetry(asymmetry: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].asymmetry = float(asymmetry)
[docs]def coupling(g: float, platform: Platform, qubit: QubitId):
platform.qubits[qubit].g = float(g)
[docs]def kernel(kernel: np.ndarray, platform: Platform, qubit: QubitId):
platform.qubits[qubit].kernel = kernel