hqm.circuits.circuit

 1from typing import TypeVar, Generic
 2import pennylane as qml
 3import warnings
 4
 5quantumcircuit = TypeVar("quantumcircuit")
 6class QuantumCircuit(Generic[quantumcircuit]):
 7    '''
 8        Basic QuantumCircuit object.
 9    '''
10    def __init__(self, n_qubits : int, n_layers : int, dev : qml.devices = None) -> None:
11        '''
12            QuantumCircuit parent class.  
13
14            Parameters:  
15            -----------
16            - n_qubits : int  
17                number of qubits for the quantum circuit  
18            - n_layers : int  
19                number of layers for the quantum circuit  
20            - dev : qml.device  
21                PennyLane device on wich run quantum operations (dafault : None). When None it will be set
22                to 'default.qubit'  
23            
24            Returns:  
25            --------  
26            Nothing, a QuantumCircuit object will be created.  
27        '''
28        
29        # Checking for exceptions  
30        if n_qubits < 1: raise Exception(f"Number of qubits must be greater or equal than 1, found {n_qubits}")
31        if n_layers < 1: raise Exception(f"Number of layers must be greater or equal than 1, found {n_layers}")
32
33        # Set dev to 'default.qubit' if dev is None  
34        if dev is None: 
35            dev = qml.device("default.qubit", wires=n_qubits)
36            warnings.warn(f"Dev has been set to None, setting it to {dev}")
37
38        self.n_qubits     = n_qubits
39        self.n_layers     = n_layers
40        self.dev          = dev