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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Quantum phase estimation algorithm ： ウィキペディア英語版 Quantum phase estimation algorithm In quantum computing, the quantum phase estimation algorithm is a quantum algorithm that finds many applications as a subroutine in other algorithms. The quantum phase estimation algorithm allows one to estimate the eigenphase of an eigenvector of a unitary gate, given access to a quantum state proportional to the eigenvector and a procedure to implement the unitary conditionally. ==The Problem== Let ''U'' be a unitary operator that operates on ''m'' qubits. Then all of the eigenvalues of ''U'' have absolute value 1. Thus the spectrum of a unitary operator consists of phases $e^$. Given an eigenvector $\backslash left|\; \backslash psi\; \backslash right\backslash rangle$, such that $U\backslash left|\; \backslash psi\; \backslash right\backslash rangle\; =\; e^\backslash left|\backslash psi\; \backslash right\backslash rangle$, the objective is to estimate $\backslash theta$. The phase estimation algorithm solves this problem. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quantum phase estimation algorithm」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.