mimiqcircuits.lazy

Lazy evaluation and composition functions.

Functions

control(*args)	Apply a control to a quantum operation or creating a lazy expression.
inverse(op)	Compute the inverse of a quantum operation.
parallel(*args)	Create a parallel execution of a quantum operation or a lazy expression.
power(*args)	Raise a quantum operation to a power or create a lazy expression.

Classes

LazyArg()
LazyExpr(obj, *args)

class mimiqcircuits.lazy.LazyArg

Bases: object

class mimiqcircuits.lazy.LazyExpr(obj, *args)

Bases: object

__init__(obj, *args)

inverse()

parallel(*args)

control(*args)

power(*args)

mimiqcircuits.lazy.control(*args)

Apply a control to a quantum operation or creating a lazy expression.

This function can be used in two ways: 1. To create a controlled version of a Gate or Operation. 2. To create a lazy expression that will apply a control to a future argument.

Parameters:

*args –

Variable length argument list. - If one argument is provided:

• If it’s an operation, returns a lazy expression control(?, op).

• If it’s an integer (num_controls), returns a lazy expression control(n, ?).

• If two arguments are provided (num_controls, gate): - Returns the controlled operation gate.control(num_controls).

Returns:

The controlled operation or a lazy expression.

Return type:

Union[Operation, LazyExpr]

Raises:

TypeError – If the arguments are of invalid types or count.

Examples

>>> from mimiqcircuits import *
>>> op = control(2, GateX())
>>> op
C₂X
>>> lazy_ctrl = control(2)
>>> lazy_ctrl(GateX())
C₂X

mimiqcircuits.lazy.parallel(*args)

Create a parallel execution of a quantum operation or a lazy expression.

This function can be used to apply an operation multiple times in parallel across different qubits.

Parameters:

*args –

Variable length argument list. - If one argument is provided:

• If it’s an operation, returns a lazy expression parallel(?, op).

• If it’s an integer (num_repeats), returns a lazy expression parallel(n, ?).

• If two arguments are provided (num_repeats, gate):

  • Returns the parallel operation gate.parallel(num_repeats).

Returns:

The parallel operation or a lazy expression.

Return type:

Union[Operation, LazyExpr]

Raises:

TypeError – If the arguments are of invalid types or count.

Examples

>>> from mimiqcircuits import *
>>> op = parallel(3, GateH())
>>> op
⨷ ³ H

mimiqcircuits.lazy.inverse(op)

Compute the inverse of a quantum operation.

Parameters:

op (Operation) – The operation to invert.

Returns:

The inverse of the operation.

Return type:

Operation

Examples

>>> from mimiqcircuits import *
>>> op = inverse(GateS())
>>> op
S†

mimiqcircuits.lazy.power(*args)

Raise a quantum operation to a power or create a lazy expression.

Parameters:

*args –

Variable length argument list. - If one argument is provided:

• If it’s an operation, returns a lazy expression power(op, ?).

• If it’s a number (exponent), returns a lazy expression power(?, exponent).

• If two arguments are provided (gate, exponent): - Returns the powered operation gate.power(exponent).

Returns:

The powered operation or a lazy expression.

Return type:

Union[Operation, LazyExpr]

Raises:

TypeError – If the arguments are of invalid types or count.

Examples

>>> from mimiqcircuits import *
>>> op = power(GateX(), 0.5)
>>> op
SX