logo

Expression of type ExprTuple

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 ExprTuple, k, t
from proveit.linear_algebra import ScalarMult, TensorProd, VecAdd, VecSum
from proveit.numbers import Add, Exp, Interval, Mult, e, frac, i, one, pi, subtract, two, zero
from proveit.physics.quantum import NumKet, ket0, ket1
from proveit.physics.quantum.QPE import _phase, two_pow_t
In [2]:
# build up the expression from sub-expressions
sub_expr1 = VecSum(index_or_indices = [k], summand = ScalarMult(Exp(e, Mult(two, pi, i, _phase, k)), NumKet(k, t)), domain = Interval(zero, subtract(two_pow_t, one)))
expr = ExprTuple(frac(one, Exp(two, frac(Add(t, one), two))), VecAdd(TensorProd(ket0, sub_expr1), ScalarMult(Exp(e, Mult(two, pi, i, _phase, two_pow_t)), TensorProd(ket1, sub_expr1))))
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())
\left(\frac{1}{2^{\frac{t + 1}{2}}}, \left(\lvert 0 \rangle {\otimes} \left(\sum_{k=0}^{2^{t} - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t}\right)\right)\right) + \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot 2^{t}} \cdot \left(\lvert 1 \rangle {\otimes} \left(\sum_{k=0}^{2^{t} - 1} \left(\mathsf{e}^{2 \cdot \pi \cdot \mathsf{i} \cdot \varphi \cdot k} \cdot \lvert k \rangle_{t}\right)\right)\right)\right)\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
wrap_positionsposition(s) at which wrapping is to occur; 'n' is after the nth comma.()()('with_wrapping_at',)
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'leftleft('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1, 2
1Operationoperator: 16
operands: 3
2Operationoperator: 4
operands: 5
3ExprTuple68, 6
4Literal
5ExprTuple7, 8
6Operationoperator: 62
operands: 9
7Operationoperator: 20
operands: 10
8Operationoperator: 36
operands: 11
9ExprTuple66, 12
10ExprTuple13, 25
11ExprTuple14, 15
12Operationoperator: 16
operands: 17
13Operationoperator: 28
operand: 50
14Operationoperator: 62
operands: 19
15Operationoperator: 20
operands: 21
16Literal
17ExprTuple22, 66
18ExprTuple50
19ExprTuple48, 23
20Literal
21ExprTuple24, 25
22Operationoperator: 54
operands: 26
23Operationoperator: 52
operands: 27
24Operationoperator: 28
operand: 68
25Operationoperator: 29
operand: 31
26ExprTuple67, 68
27ExprTuple66, 56, 57, 58, 60
28Literal
29Literal
30ExprTuple31
31Lambdaparameter: 59
body: 33
32ExprTuple59
33Conditionalvalue: 34
condition: 35
34Operationoperator: 36
operands: 37
35Operationoperator: 38
operands: 39
36Literal
37ExprTuple40, 41
38Literal
39ExprTuple59, 42
40Operationoperator: 62
operands: 43
41Operationoperator: 44
operands: 45
42Operationoperator: 46
operands: 47
43ExprTuple48, 49
44Literal
45ExprTuple59, 67
46Literal
47ExprTuple50, 51
48Literal
49Operationoperator: 52
operands: 53
50Literal
51Operationoperator: 54
operands: 55
52Literal
53ExprTuple66, 56, 57, 58, 59
54Literal
55ExprTuple60, 61
56Literal
57Literal
58Literal
59Variable
60Operationoperator: 62
operands: 63
61Operationoperator: 64
operand: 68
62Literal
63ExprTuple66, 67
64Literal
65ExprTuple68
66Literal
67Variable
68Literal