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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
60
3
章 多重キュビット
図3-25
スワップテストを
2
つの状態が等しいかどうかを確認する方法と考えるよりもむしろ、別の解釈をす
るほうがよいでしょう。この解釈とは、
1
という結果を得る確率が
2
つの入力がどれほど同一であるか
（その忠実度がどのくらいであるか）の尺度であると考えるものです。スワップテストを十分に繰り返せ
ば、この確率を推定し、忠実度を推定することができます。
2
つの量子状態がこの方法でどれだけ近い
かを正確に推定することは、量子機械学習アプリケーションで有用だと考えられます。
3.10
条件付き演算を構築する
CNOT
と
CPHASE
の演算を導入しましたが、
CHAD
（条件付き
HAD
）、 ま た は
CRNOT
（条件付き
RNOT
）
のようなものが存在するでしょうか？
答えはイエスです。ある特定の
QPU
の命令セットで条件付きの
単一キュビット演算が存在していなくても、単一キュビット演算を多重キュビットの条件付き演算に変
換する方法があるのです。
単一キュビット演算に条件を付けるためには、少しだけ数学の知識が必要ですが、実際に例を見る
と気分が楽になるでしょう。鍵となるアイデアは、単一キュビット演算を小さなステップに分割するこ
とです。条件付きで演算を元に戻す
CNOT
を使えるように、単一キュビット演算を一連のステップに分
割することがいつも可能です。この分割によって、単一キュビット演算の作用を条件によって制御でき ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.