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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>A fast quantum mechanical algorithm for database search · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/quant-ph_9605043/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/quant-ph_9605043/feed.xml" rel="self" type="application/rss+xml" /><item><title>A fast quantum mechanical algorithm for database search — mentioned by ThePhysicist</title><link>https://news.ycombinator.com/item?id=9929868</link><guid isPermaLink="false">urn:hackerpapers:mention:quant-ph_9605043:9929868</guid><pubDate>Wed, 22 Jul 2015 14:36:21 GMT</pubDate><description>&lt;p&gt;After quickly reading through the paper it seems that the algorithm they employ is very similar to Grover search [1], which provides a quadratic/square-root speed-up for generic search problems, so O(2^m) -&amp;gt; O(2^(n/2)). Basically, they perform the following three steps: 1) Generate an even superposition of all possible solution states using a Hadamard transform (so go from |000000...&amp;gt; to 1/sqrt(N)*(|00000..0&amp;gt;+|000...1&amp;gt;+|1111...1&amp;gt;). This is pretty standard and used in almost all quantum algorithms. 2) Evaluate each clause of their Boolean E3-CNF function on the superposed input state and…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/quant-ph_9605043/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>quant-ph</category></item></channel></rss>
