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O'Reilly Platform
book
量子计算机编程:从入门到实践
by
Eric R. Johnston
,
Nicholas Harrigan
,
Mercedes Gimeno-Segovia
July 2021
Beginner to intermediate
274 pages
7h 10m
Chinese
Posts & Telecom Press
Content preview from
量子计算机编程:从入门到实践
184
|
第
11
章
11.3.3
绘制曲线
要画出更复杂的形状,我们需要掌握更复杂的数学知识。示例
11-2
展示了如何使用第
5
章
中的名为
addSquared()
的
QPU
函数绘制半径为
13
像素的四分之一圆。效果如图
11-8
所
示。在这个例子中,数学运算必须在十量子比特寄存器中执行,以防止在对
qx
和
qy
计算
平方和时溢出。我们使用了在第
10
章中学到的技巧,通过强度逻辑运算和相位逻辑运算
的组合,在一个状态的相位中存储逻辑运算的值。
图
11-8
:在希尔伯特空间绘制曲线
示例代码
请在
http://oreilly-qc.github.io?p=11-2
上运行本示例。
示例
11-2
在希尔伯特空间绘制曲线
var
radius
=
13
;
var
acc_bits
=
10
;
//
清空画布
qc
.
reset
(
18
);
var
qx
=
qint
.
new
(
4
,
'qx'
);
var
qy
=
qint
.
new
(
4
,
'qy'
);
var
qacc
=
qint
.
new
(
10
,
'qacc'
);
qc
.
write
(
0
);
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ISBN: 9787115566355