August 2020
Beginner to intermediate
332 pages
8h 16m
Japanese
book
動かして学ぶ量子コンピュータプログラミング ―シミュレータとサンプルコードで理解する基本アルゴリズム
by Eric R. Johnston, Nic Harrigan, Mercedes Gimeno-Segovia, 北野 章, 丸山 耕司
Content preview from 動かして学ぶ量子コンピュータプログラミング ―シミュレータとサンプルコードで理解する基本アルゴリズム
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250
12
章 ショアの素因数分解アルゴリズム
図 12-18 に示した読み取り操作の例では、
4
という数は、最も可能性の高い
4
つのオプションからラ
ンダムに取得したものです。ショアのアルゴリズムの
QPU
を使う部分が完成したので、この読み取り
結果を次のステップで使用する従来の論理関数
ShorLogic()
に渡します。
作業レジスタ
図 12-18
ステップ
7
：デジタル論理演算
この時点までの作業で
4
という数が求められました。しかし、図12-15 を振り返ってみると、
0
、
4
、
8
、
12
という結果をランダムに受け取ることができました。
先に述べたように、
QFT
でのスパイクがレジスタ全体に均等に分布していることを考慮すると、従
来型のデジタル論理演算を使った
READ
値と一致する周期を決定できます。例 12-4 の
estimate_
num_spikes()
関数は、これを行うための論理演算を明示的に示しています。場合によっては、この
関数は
DFT
のプロットのスパイクの数の候補を複数返す場合があります。例えば、
READ
値として
4
を
12.3
整数
15
の素因数分解を
1
ステップずつ行う
251
渡すと、
4
と
8
という
2
つの値を返します。どちらも読み取り値と一致する
DFT
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.