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 two
from proveit.physics.quantum import CONTROL, H, Y
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 = Y), Gate(operation = H)]))

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] & \gate{Y} & \qw \\
& \targ{} & \gate{H} & \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, 6
4	ExprTuple	7, 8
5	Operation	operator: 9 operands: 10
6	Operation	operator: 13 operands: 11
7	Operation	operator: 13 operands: 12
8	Operation	operator: 13 operands: 14
9	Literal
10	NamedExprs	element: 15 targets: 16
11	NamedExprs	operation: 17
12	NamedExprs	operation: 18
13	Literal
14	NamedExprs	operation: 19
15	Literal
16	Operation	operator: 20 operand: 22
17	Literal
18	Literal
19	Literal
20	Literal
21	ExprTuple	22
22	Literal