derwind https://blog.hatena.ne.jp/derwind/ らんだむな記憶 https://randommemory.hatenablog.com/ quantum_computing 計算はさぼってそのまま書き出すとして、n 量子ビットでの量子 Fourier 変換は$$ | \tilde{k} \rangle = U_{QFT} \ket{k} = \frac{1}{\sqrt{N}} (\ket{0} + e^{2 \pi i k \frac{1}{2^1}} \ket{1}) \otimes (\ket{0} + e^{2 \pi i k \frac{1}{2^2}} \ket{1}) \otimes \cdots \otimes (\ket{0} + e^{2 \pi i k \frac{1}{2^n}} \ket{1}) $$と書ける。この辺は textbook … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frandommemory.hatenablog.com%2Fentry%2F2022%2F01%2F29%2F233618" title="Qiskit (30) ― 量子 Fourier 変換 - らんだむな記憶" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2022-01-29 23:36:18 rich https://randommemory.hatenablog.com/entry/2022/01/29/233618 1.0 100%