qns.entity.qchannel package

Submodules

qns.entity.qchannel.losschannel module

class qns.entity.qchannel.losschannel.QubitLossChannel(name: str = None, node_list: List[QNode] = [], bandwidth: int = 0, delay: float | DelayModel = 0, p_init: float = 0, attenuation_rate: float = 0, max_buffer_size: int = 0, length: float = 0, decoherence_rate: float | None = 0, transfer_error_model_args: dict = {})

Bases: QuantumChannel

QubitLossChannel is the channel that can loss qubits.

The loss rate is: 1-(1-p_init)*10^{- attenuation_rate * length / 10}

qns.entity.qchannel.qchannel module

exception qns.entity.qchannel.qchannel.NextHopNotConnectionException

Bases: Exception

class qns.entity.qchannel.qchannel.QuantumChannel(name: str = None, node_list: List[QNode] = [], fidelity: float = 0.8, bandwidth: int = 1, delay: float | DelayModel = 0, drop_rate: float = 0, max_buffer_size: int = 0, length: float = 0, decoherence_rate: float | None = 0, transfer_error_model_args: dict = {})

Bases: Entity

QuantumChannel is the channel for transmitting qubit

install(simulator: Simulator) → None

install is called before simulator runs to initialize or set initial events

Parameters:

simulator (Simulator) – the simulator

send(qubit: QuantumModel, next_hop: QNode)

Send a qubit to the next_hop

Parameters:

• qubit (QuantumModel) – the transmitting qubit

• next_hop (QNode) – the next hop QNode

Raises:

NextHopNotConnectionException – the next_hop is not connected to this channel

class qns.entity.qchannel.qchannel.RecvQubitPacket(t: Time | None = None, qchannel: QuantumChannel = None, qubit: QuantumModel = None, dest: QNode = None, name: str | None = None, by: Any | None = None)

Bases: Event

The event for a QNode to receive a classic packet

invoke() → None

Invoke the event, should be implemented

Module contents

class qns.entity.qchannel.Link_Decoherence_QuantumChannel(name: str = None, node_list: List[QNode] = [], init_fidelity: float = 0.8, bandwidth: int = 1, delay: float | DelayModel = 0, drop_rate: float = 0, max_buffer_size: int = 0, length: float = 0, decoherence_rate: float | None = 0, transfer_error_model_args: dict = {}, max_storage_time=0.4, min_storage_time=0.0)

Bases: QuantumChannel

Link_Decoherence_QuantumChannel is the channel in which the fidelity of entangled pairs decoherence within the quantum memory.

create_entanglement_pool()

Creat entangled pairs.

find_fidlity_index(fidelity)

Find the entanglement pair whose fidelity is equal to the specified fidelity.

Parameters:

fidelity – the specified fidelity.

find_max_min_fidelity()

Find the entanglement pairs with maximum and minimum fidelity.

remove_entanglement_by_fidelity(fidelity)

Remove the entanglement pair whose fidelity is equal to the specified fidelity.

remove_entanglement_by_index(index)

Remove the entanglement pair whose fidelity is equal to the specified index.

class qns.entity.qchannel.QuantumChannel(name: str = None, node_list: List[QNode] = [], fidelity: float = 0.8, bandwidth: int = 1, delay: float | DelayModel = 0, drop_rate: float = 0, max_buffer_size: int = 0, length: float = 0, decoherence_rate: float | None = 0, transfer_error_model_args: dict = {})

Bases: Entity

QuantumChannel is the channel for transmitting qubit

install(simulator: Simulator) → None

install is called before simulator runs to initialize or set initial events

Parameters:

simulator (Simulator) – the simulator

send(qubit: QuantumModel, next_hop: QNode)

Send a qubit to the next_hop

Parameters:

• qubit (QuantumModel) – the transmitting qubit

• next_hop (QNode) – the next hop QNode

Raises:

NextHopNotConnectionException – the next_hop is not connected to this channel

class qns.entity.qchannel.QubitLossChannel(name: str = None, node_list: List[QNode] = [], bandwidth: int = 0, delay: float | DelayModel = 0, p_init: float = 0, attenuation_rate: float = 0, max_buffer_size: int = 0, length: float = 0, decoherence_rate: float | None = 0, transfer_error_model_args: dict = {})

Bases: QuantumChannel

QubitLossChannel is the channel that can loss qubits.

The loss rate is: 1-(1-p_init)*10^{- attenuation_rate * length / 10}

class qns.entity.qchannel.RecvQubitPacket(t: Time | None = None, qchannel: QuantumChannel = None, qubit: QuantumModel = None, dest: QNode = None, name: str | None = None, by: Any | None = None)

Bases: Event

The event for a QNode to receive a classic packet

invoke() → None

Invoke the event, should be implemented