# SimQN: a discrete-event simulator for the quantum networks
# Copyright (C) 2021-2022 Lutong Chen, Jian Li, Kaiping Xue
# University of Science and Technology of China, USTC.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from typing import Optional
[docs]class QuantumModel(object):
"""
The interface to present the backend models, including qubit, epr and other models.
"""
[docs] def store_error_model(self, t: Optional[float] = 0, decoherence_rate: Optional[float] = 0, **kwargs):
"""
The error model for quantum memory.
This function will change the quantum state or fidelity
according to different backend models.
Args:
t (float): the time stored in a quantum memory. The unit it second.
decoherence_rate (float): the decoherency rate
kwargs: other parameters
"""
pass
[docs] def transfer_error_model(self, length: Optional[float] = 0, decoherence_rate: Optional[float] = 0, **kwargs):
"""
The error model for transmitting a qubit in quantum channel.
This function will change the quantum state or fidelity
according to different backend models.
Args:
length (float): the length of the channel
decoherence_rate (float): the decoherency rate
kwargs: other parameters
"""
pass
[docs] def operate_error_model(self, decoherence_rate: Optional[float] = 0, **kwargs):
"""
The error model for operating a qubit.
This function will change the quantum state.
Args:
decoherence_rate (float): the decoherency rate
kwargs: other parameters
"""
pass
[docs] def measure_error_model(self, decoherence_rate: Optional[float] = 0, **kwargs):
"""
The error model for measuring a qubit.
This function will change the quantum state.
Args:
decoherence_rate (float): the decoherency rate
kwargs: other parameters
"""
pass