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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8
1
章 はじめに
記号 名称 使い方 説明
READ val = qc.read(t)
キュビットを読み、デジタルデー
タを返す
WRITE qc.write(t,val)
従来型のデータをキュビットに書
き込む
ROOTNOT qc.rootnot(t)
Root-of-NOT
演算
SWAP
(
EXCHANGE
)
qc.exchange(t1|t2)
2
つのキュビットの交換
CSWAP qc.exchange(t1|t2, c)
条件付きの交換：
if (c) then SWAP(t1,t2)
に相当
それぞれの演算では、具体的な命令と計算時間は
QPU
の種類とアーキテクチャに依存します。しか
し、これはすべての量子コンピュータで利用できると想定されている基本演算です。これらの演算は、
CPU
プログラミングにおける
MOV
や
ADD
のような命令と同様に、
QPU
プログラミングの基盤を形成す
るものです。
1.4.1
シミュレータの限界
シミュレータは小さな
QPU
プログラムの原型を作る素晴らしい機会を提供するものですが、その計
算能力は、実際の
QPU
と比較すると、絶望的になるくらい低いものです。
QPU
のパワーを測る尺度の
1
つは、演算に利用できるキュビットの数です
＊
1
。（キュビットは量子コンピュータにおいてビットの代
替として使われる単位です。詳しくは
2
章で説明します）。
本書の出版時点では、
51
個のキュビットを持つ
QPU
シミュレータが世界最大です。実際に本書のほ
とんどの読者が利用できるシミュレータとハードウェアは、
26
個程度のキ
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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.