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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14.12
次はどこへ？
295
量子コンピュータがもたらす社会的・経済的変化の可能性は、他のほとんどの技術と比べると比類
のないものであることは明らかです。これが、この技術に興味が集まる理由の
1
つとなっています。
14.11
量子誤り訂正と
NISQ
デバイス
本書で述べた
QPU
演 算 、プ リミ テ ィ ブ 、ア プ リ ケ ー ショ ン の 議 論 は す べ て 、誤り訂正されたキュビッ
ト（論理キュビットとも呼ばれる）を使うことが仮定（あるいはシミュレート）されています。従来の計
算と同様に、レジスタや演算の誤りは、量子計算をすぐに台無しにしてしまいます。この効果を打ち消
すために設計された量子誤り訂正コードに関する研究が数多く行われています。量子誤り訂正の研究
における顕著な結果は、閾値定理（
threshold theorem
）で す 。 こ の 定 理 は 、
QPU
の誤り率が一定の閾
値を下回った場合、量子誤り訂正コードが計算に対する小さなオーバーヘッドのコストで誤りを抑制す
ることを示すものです。
QPU
アプリケーションは、このような低ノイズ条件下でのみ、従来のアルゴ
リズムに対して優位性を維持できます。そのため、誤り訂正されたキュビットが必要となります。
このような状況から、執筆時点では、ノイズあり中規模量子デバイス（
Noisy Intermediate-Scale
Quantum
：
NISQ
）で実行しても、従来のコンピュータよりも高速化を提供する
QPU
アルゴリズムを探
索する方向で研究が行
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and much more.
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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.