Expression of type Qcircuit

from the theory of proveit.physics.quantum.QPE

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 ExprRange, U, Variable, VertExprArray, s, t
from proveit.numbers import Add, Interval, one
from proveit.physics.quantum import I
from proveit.physics.quantum.QFT import InverseFourierTransform
from proveit.physics.quantum.QPE import QPE1
from proveit.physics.quantum.circuits import Gate, MultiQubitElem, Qcircuit

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = Add(t, s)
sub_expr3 = MultiQubitElem(element = Gate(operation = QPE1(U, t), part = sub_expr1), targets = Interval(one, sub_expr2))
expr = Qcircuit(vert_expr_array = VertExprArray([ExprRange(sub_expr1, sub_expr3, one, t), ExprRange(sub_expr1, sub_expr3, Add(t, one), sub_expr2)], [ExprRange(sub_expr1, MultiQubitElem(element = Gate(operation = InverseFourierTransform(t), part = sub_expr1), targets = Interval(one, t)), one, t), ExprRange(sub_expr1, Gate(operation = I).with_implicit_representation(), one, s)]))

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{
& \multigate{1}{\textrm{QPE}_1\left(U, t\right)} & \gate{{\mathrm {FT}}^{\dag}_{t}} & { /^{t} } \qw \\
& \ghost{\textrm{QPE}_1\left(U, t\right)} & { /^{s} } \qw & { /^{s} } \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	ExprRange	lambda_map: 9 start_index: 37 end_index: 46
6	ExprRange	lambda_map: 9 start_index: 10 end_index: 34
7	ExprRange	lambda_map: 11 start_index: 37 end_index: 46
8	ExprRange	lambda_map: 12 start_index: 37 end_index: 45
9	Lambda	parameter: 36 body: 13
10	Operation	operator: 40 operands: 14
11	Lambda	parameter: 36 body: 15
12	Lambda	parameter: 36 body: 17
13	Operation	operator: 19 operands: 18
14	ExprTuple	46, 37
15	Operation	operator: 19 operands: 20
16	ExprTuple	36
17	Operation	operator: 29 operands: 21
18	NamedExprs	element: 22 targets: 23
19	Literal
20	NamedExprs	element: 24 targets: 25
21	NamedExprs	operation: 26
22	Operation	operator: 29 operands: 27
23	Operation	operator: 31 operands: 28
24	Operation	operator: 29 operands: 30
25	Operation	operator: 31 operands: 32
26	Literal
27	NamedExprs	operation: 33 part: 36
28	ExprTuple	37, 34
29	Literal
30	NamedExprs	operation: 35 part: 36
31	Literal
32	ExprTuple	37, 46
33	Operation	operator: 38 operands: 39
34	Operation	operator: 40 operands: 41
35	Operation	operator: 42 operand: 46
36	Variable
37	Literal
38	Literal
39	ExprTuple	44, 46
40	Literal
41	ExprTuple	46, 45
42	Literal
43	ExprTuple	46
44	Variable
45	Variable
46	Variable