Expression of type Qcircuit

from the theory of proveit.physics.quantum.circuits

import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import VertExprArray
from proveit.logic import Set
from proveit.numbers import one, two
from proveit.physics.quantum import CONTROL, I
from proveit.physics.quantum.circuits import Gate, MultiQubitElem, Qcircuit, target

# build up the expression from sub-expressions
expr = Qcircuit(vert_expr_array = VertExprArray([MultiQubitElem(element = CONTROL, targets = Set(two)), target, Gate(operation = I).with_implicit_representation()], [target, target, MultiQubitElem(element = CONTROL, targets = Set(one, two))]))

expr:

# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")

Passed sanity check: expr matches stored_expr

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\begin{array}{c} \Qcircuit@C=1em @R=.7em{
& \control{} \qw \qwx[1] & \targ{} \qwx[1] & \qw \\
& \targ{} & \targ{} \qwx[1] & \qw \\
& \qw & \control{} \qw & \qw
} \end{array}

stored_expr.style_options()

name	description	default	current value	related methods
spacing	change the spacing of a circuit using the format '@C=1em @R=.7em' where C is the column spacing and R is the row spacing	@C=1em @R=.7em	@C=1em @R=.7em

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Operation	operator: 1 operands: 2
1	Literal
2	ExprTuple	3, 4
3	ExprTuple	5, 7, 6
4	ExprTuple	7, 7, 8
5	Operation	operator: 13 operands: 9
6	Operation	operator: 11 operands: 10
7	Operation	operator: 11 operands: 12
8	Operation	operator: 13 operands: 14
9	NamedExprs	element: 18 targets: 15
10	NamedExprs	operation: 16
11	Literal
12	NamedExprs	operation: 17
13	Literal
14	NamedExprs	element: 18 targets: 19
15	Operation	operator: 21 operand: 24
16	Literal
17	Literal
18	Literal
19	Operation	operator: 21 operands: 22
20	ExprTuple	24
21	Literal
22	ExprTuple	23, 24
23	Literal
24	Literal