add implementation of the identity gate (#25)

Co-authored-by: Henri-ColibrITD <133855265+Henri-ColibrITD@users.noreply.github.com>
Co-authored-by: ah4dev <159559130+ah4dev@users.noreply.github.com>
Co-authored-by: hJaffaliColibritd <133856040+hJaffaliColibritd@users.noreply.github.com>

Author: 4 people

mpqp/all.py

@@ -1,63 +1,62 @@
 # pyright: reportUnusedImport=false
 import numpy as np
-from . import QCircuit, Barrier, Language, Instruction
+
+from mpqp.execution.providers_execution.atos_execution import get_result_from_qlm_job_id
+
+from . import Barrier, Instruction, Language, QCircuit
+from .execution import (
+    Job,
+    JobStatus,
+    JobType,
+    Result,
+    Sample,
+    StateVector,
+    adjust_measure,
+    run,
+    submit,
+)
+from .execution.connection.qlm_connection import get_all_job_ids
+from .execution.devices import ATOSDevice, AWSDevice, IBMDevice
+from .execution.vqa import Optimizer, minimize
 from .gates import (
-    X,
-    Y,
-    Z,
-    H,
-    P,
-    S,
-    T,
-    SWAP,
-    U,
-    Rx,
-    Ry,
-    Rz,
-    Rk,
     CNOT,
     CZ,
-    CRk,
+    SWAP,
     TOF,
     ControlledGate,
+    CRk,
+    CustomGate,
     Gate,
-    ParametrizedGate,
-    symbols,
     GateDefinition,
+    H,
+    Id,
     KrausRepresentation,
+    P,
+    ParametrizedGate,
     PauliDecomposition,
-    CustomGate,
+    Rk,
+    Rx,
+    Ry,
+    Rz,
+    S,
+    T,
+    U,
     UnitaryMatrix,
+    X,
+    Y,
+    Z,
+    symbols,
 )
 from .measures import (
-    ComputationalBasis,
     Basis,
-    HadamardBasis,
-    VariableSizeBasis,
     BasisMeasure,
+    ComputationalBasis,
     ExpectationMeasure,
-    Observable,
+    HadamardBasis,
     Measure,
+    Observable,
+    VariableSizeBasis,
 )
-from .execution import (
-    Result,
-    StateVector,
-    Sample,
-    run,
-    adjust_measure,
-    submit,
-    Job,
-    JobStatus,
-    JobType,
-)
-from .execution.devices import (
-    ATOSDevice,
-    IBMDevice,
-    AWSDevice,
-)
-from .execution.vqa import minimize, Optimizer
-from .execution.connection.qlm_connection import get_all_job_ids
-from mpqp.execution.providers_execution.atos_execution import get_result_from_qlm_job_id
 from .qasm import open_qasm_file_conversion_2_to_3, open_qasm_hard_includes
 
 theta, k = symbols("θ k")  # type: ignore

mpqp/core/instruction/gates/__init__.py

@@ -1,29 +1,26 @@
 # pyright: reportUnusedImport=false
 from .controlled_gate import ControlledGate
+from .custom_gate import CustomGate, UnitaryMatrix
 from .gate import Gate
-from .parametrized_gate import ParametrizedGate, symbols
-from .gate_definition import (
-    GateDefinition,
-    KrausRepresentation,
-    PauliDecomposition,
-)
+from .gate_definition import GateDefinition, KrausRepresentation, PauliDecomposition
 from .native_gates import (
-    X,
-    Y,
-    Z,
+    CNOT,
+    CZ,
+    SWAP,
+    TOF,
+    CRk,
     H,
+    Id,
     P,
-    S,
-    T,
-    SWAP,
-    U,
+    Rk,
     Rx,
     Ry,
     Rz,
-    Rk,
-    CNOT,
-    CZ,
-    CRk,
-    TOF,
+    S,
+    T,
+    U,
+    X,
+    Y,
+    Z,
 )
-from .custom_gate import CustomGate, UnitaryMatrix
+from .parametrized_gate import ParametrizedGate, symbols

mpqp/core/instruction/gates/native_gates.py

@@ -11,39 +11,40 @@
 
 import numpy as np
 import numpy.typing as npt
-
 from qiskit.circuit import Parameter
 from qiskit.circuit.library import (
-    ZGate,
-    YGate,
     CCXGate,
+    CPhaseGate,
+    CXGate,
+    CZGate,
+    HGate,
+    IGate,
     PhaseGate,
-    SGate,
-    UGate,
-    TGate,
-    SwapGate,
     RXGate,
     RYGate,
     RZGate,
-    HGate,
-    CXGate,
+    SGate,
+    SwapGate,
+    TGate,
+    UGate,
     XGate,
-    CPhaseGate,
-    CZGate,
+    YGate,
+    ZGate,
 )
 from sympy import Expr, pi
 
 # pylance doesn't handle well Expr, so a lot of "type:ignore" will happen in
 # this file :/
 from typeguard import typechecked
 
-from mpqp.core.languages import Language
-from mpqp.core.instruction.gates.gate import Gate, InvolutionGate, SingleQubitGate
 from mpqp.core.instruction.gates.controlled_gate import ControlledGate
+from mpqp.core.instruction.gates.gate import Gate, InvolutionGate, SingleQubitGate
 from mpqp.core.instruction.gates.gate_definition import UnitaryMatrix
 from mpqp.core.instruction.gates.parametrized_gate import ParametrizedGate
+from mpqp.core.languages import Language
 from mpqp.tools.generics import Matrix
-from mpqp.tools.maths import cos, sin, exp
+from mpqp.tools.maths import cos, exp, sin
+
 
 @typechecked
 def _qiskit_parameter_adder(param: Expr | float, qiskit_parameters: set[Parameter]):
@@ -162,6 +163,7 @@ class NoParameterGate(NativeGate, ABC):
         | CXGate
         | CZGate
         | CCXGate
+        | IGate
     ]
     """Corresponding ``qiskit``'s gate class."""
     matrix: npt.NDArray[np.complex64]
@@ -194,11 +196,19 @@ def __init__(self, target: int):
 
 
 class Id(OneQubitNoParamGate, InvolutionGate):
-    """TODO hamza/muhammad
+    """One qubit identity gate.
+
+    Args:
+        target: Index referring to the qubit on which the gate will be applied.
+
+    Example:
+        >>> Id(0).to_matrix()
+        array([[1, 0],
+               [0, 1]])
     """
 
-    qiskit_gate = ...
-    matrix = ...
+    qiskit_gate = IGate
+    matrix = np.eye(2)
 
 
 class X(OneQubitNoParamGate, InvolutionGate):