logo

Expression of type Output

from the theory of proveit.physics.quantum.QPE

In [1]:
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 Variable, t
from proveit.numbers import Mult
from proveit.physics.quantum import NumKet
from proveit.physics.quantum.QPE import phase, two_pow_t
from proveit.physics.quantum.circuits import Output
In [2]:
# build up the expression from sub-expressions
expr = Output(state = NumKet(Mult(two_pow_t, phase), t), part = Variable("_a", latex_format = r"{_{-}a}"))
expr:
In [3]:
# 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
In [4]:
# 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{
& & \qout{\lvert 2^{t} \cdot \varphi \rangle_{t}~\mbox{part}~{_{-}a}} 
} \end{array}
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 1
operands: 2
1Literal
2NamedExprsstate: 3
part: 4
3Operationoperator: 5
operands: 6
4Variable
5Literal
6ExprTuple7, 15
7Operationoperator: 8
operands: 9
8Literal
9ExprTuple10, 11
10Operationoperator: 12
operands: 13
11Variable
12Literal
13ExprTuple14, 15
14Literal
15Variable