pennylane_aqt.ops.MS¶
-
class
MS
(wires)[source]¶ Bases:
pennylane.operation.Operation
Mølmer-Sørenson gate.
\[\begin{split}MS(t) = \begin{bmatrix} \cos(t\tfrac{\pi}{2}) & 0 & 0 & -i\sin(t\tfrac{\pi}{2}) \\ 0 & \cos(t\tfrac{\pi}{2}) & -i\sin(t\tfrac{\pi}{2}) & 0 \\ 0 & -i\sin(t\tfrac{\pi}{2}) & \cos(t\tfrac{\pi}{2}) & 0 \\ -i\sin(t\tfrac{\pi}{2}) & 0 & 0 & \cos(t\tfrac{\pi}{2}) \end{bmatrix}\end{split}\]For further details, see the AQT API docs.
Details:
- Number of wires: 2
- Number of parameters: 1
Parameters: wires (int) – the subsystem the gate acts on Attributes
base_name
Get base name of the operator. do_check_domain
eigvals
Eigenvalues of an instantiated operator. generator
Generator of the operation. grad_method
grad_recipe
inverse
Boolean determining if the inverse of the operation was requested. matrix
Matrix representation of an instantiated operator in the computational basis. name
Get and set the name of the operator. num_params
num_wires
par_domain
parameters
Current parameter values. string_for_inverse
wires
Wires of this operator. -
base_name
¶ Get base name of the operator.
-
do_check_domain
= True¶
-
eigvals
¶ Eigenvalues of an instantiated operator.
Note that the eigenvalues are not guaranteed to be in any particular order.
Example:
>>> U = qml.RZ(0.5, wires=1) >>> U.eigvals >>> array([0.96891242-0.24740396j, 0.96891242+0.24740396j])
Returns: eigvals representation Return type: array
-
generator
¶ Generator of the operation.
A length-2 list
[generator, scaling_factor]
, wheregenerator
is an existing PennyLane operation class or \(2\times 2\) Hermitian array that acts as the generator of the current operationscaling_factor
represents a scaling factor applied to the generator operation
For example, if \(U(\theta)=e^{i0.7\theta \sigma_x}\), then \(\sigma_x\), with scaling factor \(s\), is the generator of operator \(U(\theta)\):
generator = [PauliX, 0.7]
Default is
[None, 1]
, indicating the operation has no generator.
-
grad_method
= 'A'¶
-
grad_recipe
= None¶
-
inverse
¶ Boolean determining if the inverse of the operation was requested.
-
matrix
¶ Matrix representation of an instantiated operator in the computational basis.
Example:
>>> U = qml.RY(0.5, wires=1) >>> U.matrix >>> array([[ 0.96891242+0.j, -0.24740396+0.j], [ 0.24740396+0.j, 0.96891242+0.j]])
Returns: matrix representation Return type: array
-
name
¶ Get and set the name of the operator.
-
num_params
= 1¶
-
num_wires
= 2¶
-
par_domain
= 'R'¶
-
parameters
¶ Current parameter values.
Fixed parameters are returned as is, free parameters represented by
Variable
instances are replaced by their current numerical value.Returns: parameter values Return type: list[Any]
-
string_for_inverse
= '.inv'¶
-
wires
¶ Wires of this operator.
Returns: wires Return type: Wires
Methods
check_domain
(p[, flattened])Check the validity of a parameter. decomposition
(*params, wires)Returns a template decomposing the operation into other quantum operations. get_parameter_shift
(idx[, shift])Multiplier and shift for the given parameter, based on its gradient recipe. inv
()Inverts the operation, such that the inverse will be used for the computations by the specific device. queue
()Append the operator to the Operator queue. -
check_domain
(p, flattened=False)¶ Check the validity of a parameter.
Variable
instances can represent any real scalars (but not arrays).Parameters: - p (Number, array, Variable) – parameter to check
- flattened (bool) – True means p is an element of a flattened parameter sequence (affects the handling of ‘A’ parameters)
Raises: TypeError
– parameter is not an element of the expected domainValueError
– parameter is an element of an unknown domain
Returns: p
Return type: Number, array, Variable
-
static
decomposition
(*params, wires)¶ Returns a template decomposing the operation into other quantum operations.
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get_parameter_shift
(idx, shift=1.5707963267948966)¶ Multiplier and shift for the given parameter, based on its gradient recipe.
Parameters: idx (int) – parameter index Returns: multiplier, shift Return type: float, float
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inv
()¶ Inverts the operation, such that the inverse will be used for the computations by the specific device.
This method concatenates a string to the name of the operation, to indicate that the inverse will be used for computations.
Any subsequent call of this method will toggle between the original operation and the inverse of the operation.
Returns: operation to be inverted Return type: Operator
-
queue
()¶ Append the operator to the Operator queue.
Contents
Usage
API
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