qxmt.feature_maps.pennylane.yzcx module

qxmt.feature_maps.pennylane.yzcx module#

class qxmt.feature_maps.pennylane.yzcx.YZCXFeatureMap(n_qubits, reps, c, seed)

Bases: BaseFeatureMap

YZCX feature map class. Reference: https://arxiv.org/abs/2108.01039

Parameters:

  • BaseFeatureMap (_type_) – base feature map class

  • n_qubits (int)

  • reps (int)

  • c (float)

  • seed (int)

Example

>>> import numpy as np
>>> from qxmt.feature_maps.pennylane.yzcx import YZCXFeatureMap
>>> feature_map = YZCXFeatureMap(2, 2, 0.1, 0)
>>> feature_map.draw(x_dim=2)
0: ──RY(0.03)──RY(3.42)──RZ(0.05)──RZ(5.88)─╭●──RY(0.03)──RY(5.39)──RZ(0.05)──RZ(0.21)
1: ─────────────────────────────────────────╰X──RY(0.03)──RY(5.13)──RZ(0.05)──RZ(0.02)
──────────────────────────────────────────┤
──RY(0.03)───RY(4.58)──RZ(0.05)──RZ(1.10)─┤
__init__(n_qubits, reps, c, seed)

“Initialize the YZCX feature map class.

Parameters:

  • n_qubits (int) – number of qubits

  • reps (int) – number of repetitions

  • c (float) – scaling factor

  • seed (int) – random seed

Return type:

None

feature_map(x)

Create quantum circuit of YZCX feature map.

Parameters:

x (np.ndarray) – input data

Return type:

None