logo

Expression of type MultiQubitElem

from the theory of proveit.physics.quantum.circuits

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 IndexedVar, N, Variable, k
from proveit.core_expr_types import A_k
from proveit.numbers import Add, Interval, one, subtract
from proveit.physics.quantum.circuits import MultiQubitElem, Output
In [2]:
# build up the expression from sub-expressions
expr = MultiQubitElem(element = Output(state = A_k, part = Variable("_a", latex_format = r"{_{-}a}")), targets = Interval(Add(IndexedVar(N, subtract(k, one)), one), IndexedVar(N, k)))
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{A_{k}~\mbox{part}~{_{-}a}~\mbox{on}~\{N_{k - 1} + 1~\ldotp \ldotp~N_{k}\}} 
} \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
2NamedExprselement: 3
targets: 4
3Operationoperator: 5
operands: 6
4Operationoperator: 7
operands: 8
5Literal
6NamedExprsstate: 9
part: 10
7Literal
8ExprTuple11, 12
9IndexedVarvariable: 13
index: 22
10Variable
11Operationoperator: 20
operands: 14
12IndexedVarvariable: 17
index: 22
13Variable
14ExprTuple16, 26
15ExprTuple22
16IndexedVarvariable: 17
index: 19
17Variable
18ExprTuple19
19Operationoperator: 20
operands: 21
20Literal
21ExprTuple22, 23
22Variable
23Operationoperator: 24
operand: 26
24Literal
25ExprTuple26
26Literal