{"id":1265,"date":"2026-10-24T14:00:00","date_gmt":"2026-10-24T05:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1265"},"modified":"2026-10-22T23:54:05","modified_gmt":"2026-10-22T14:54:05","slug":"qs-fidelity-mixture-forgotten-label-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1265","title":{"rendered":"\u91cf\u5b50\u72b6\u614b\u3092\u6df7\u305c\u305f\u5f8c\u306e\u5fe0\u5b9f\u5ea6\u3001\u679d\u3054\u3068\u306e\u6bd4\u8f03\u3068\u5e73\u5747\u72b6\u614b\u304c\u9055\u3046\u7406\u7531"},"content":{"rendered":"<p>\u4e8c\u3064\u306e\u6e96\u5099\u65b9\u6cd5\u3092\u6bd4\u3079\u308b\u3068\u304d\u3001\u6761\u4ef6\u3054\u3068\u306b\u306f\u307e\u3063\u305f\u304f\u9055\u3046\u91cf\u5b50\u72b6\u614b\u306a\u306e\u306b\u3001\u6761\u4ef6\u3092\u533a\u5225\u305b\u305a\u5e73\u5747\u3059\u308b\u3068\u540c\u3058\u72b6\u614b\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u300c\u5e73\u5747\u72b6\u614b\u306e\u5fe0\u5b9f\u5ea6\u304c\u9ad8\u3044\u300d\u3053\u3068\u3068\u3001\u300c\u5404\u6761\u4ef6\u3067\u72d9\u3044\u3069\u304a\u308a\u306e\u72b6\u614b\u3092\u6e96\u5099\u3067\u304d\u305f\u300d\u3053\u3068\u306f\u3001\u540c\u3058\u8a55\u4fa1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u9055\u3044\u3092\u3001\u5fe0\u5b9f\u5ea6\u306e<strong>\u5171\u540c\u51f9\u6027<\/strong>\u3068\u3044\u3046\u6027\u8cea\u304b\u3089\u8aad\u307f\u307e\u3059\u3002\u96e3\u3057\u3044\u540d\u79f0\u3067\u3059\u304c\u3001\u3053\u3053\u3067\u4f7f\u3046\u5185\u5bb9\u306f\u300c\u540c\u3058\u5272\u5408\u3067\u72b6\u614b\u3092\u6df7\u305c\u3066\u304b\u3089\u6bd4\u8f03\u3059\u308b\u3068\u3001\u6761\u4ef6\u3054\u3068\u306e\u5fe0\u5b9f\u5ea6\u3092\u5e73\u5747\u3057\u305f\u5024\u3088\u308a\u5c0f\u3055\u304f\u306a\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u4e0d\u7b49\u5f0f\u3067\u3059\u3002\u4f55\u306e\u60c5\u5831\u3092\u6b8b\u3057\u305f\u6bd4\u8f03\u306a\u306e\u304b\u3092\u3001\u4e8c\u3064\u306e\u6e96\u5099\u6761\u4ef6\u3067\u78ba\u304b\u3081\u307e\u3059\u3002[1]<\/p>\n<section class=\"influvetor-quick-summary\" aria-label=\"\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>\u540c\u3058\u91cd\u307f\u3067\u4e8c\u7d44\u306e\u91cf\u5b50\u72b6\u614b\u3092\u6df7\u305c\u308b\u3068\u3001\u6df7\u5408\u5f8c\u306e\u5fe0\u5b9f\u5ea6F\u306f\u3001\u5bfe\u5fdc\u3059\u308b\u679d\u3054\u3068\u306eF\u306e\u52a0\u91cd\u5e73\u5747\u4ee5\u4e0a\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u5404\u679d\u306e\u72b6\u614b\u304c\u76f4\u4ea4\u3057\u3066\u3044\u3066\u3082\u3001\u679d\u306e\u30e9\u30d9\u30eb\u3092\u4f7f\u308f\u305a\u306b\u5e73\u5747\u3057\u305f\u4e8c\u72b6\u614b\u306f\u4e00\u81f4\u3057\u5f97\u307e\u3059\u3002\u5e73\u5747\u72b6\u614b\u306e\u4e00\u81f4\u306f\u3001\u6761\u4ef6\u5225\u306e\u4e00\u81f4\u3092\u8a3c\u660e\u3057\u307e\u305b\u3093\u3002<\/li>\n<li>\u6bd4\u8f03\u3067\u306f\u6df7\u5408\u306e\u91cd\u307f\u3001\u679d\u306e\u5bfe\u5fdc\u3001\u30e9\u30d9\u30eb\u3092\u4fdd\u6301\u3059\u308b\u304b\u3092\u305d\u308d\u3048\u307e\u3059\u3002\u5e73\u65b9\u6839\u3092\u53d6\u308bF\u3068\u3001\u305d\u306e\u4e8c\u4e57F\u00b2\u3082\u533a\u5225\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u5e73\u5747\u3057\u3066\u304b\u3089\u6bd4\u3079\u308b\u304b\u3001\u6bd4\u3079\u3066\u304b\u3089\u5e73\u5747\u3059\u308b\u304b<\/h2>\n<p>\u6e96\u5099\u65b9\u6cd5A\u3068B\u306b\u3001\u305d\u308c\u305e\u308c\u6761\u4ef60\u3068\u6761\u4ef61\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002\u6761\u4ef60\u3092\u78ba\u7387\u03bb\u3001\u6761\u4ef61\u3092\u78ba\u73871\u2212\u03bb\u3067\u9078\u3073\u307e\u3059\u3002A\u306e\u6761\u4ef6\u5225\u306e\u5bc6\u5ea6\u884c\u5217\u3092\u03c1\u2080\u3068\u03c1\u2081\u3001B\u306e\u6761\u4ef6\u5225\u306e\u5bc6\u5ea6\u884c\u5217\u3092\u03c3\u2080\u3068\u03c3\u2081\u3068\u66f8\u304d\u307e\u3059\u3002\u5bc6\u5ea6\u884c\u5217\u306f\u3001\u305d\u306e\u72b6\u614b\u306b\u3069\u306e\u6e2c\u5b9a\u3092\u3057\u305f\u3089\u4f55\u304c\u3069\u306e\u78ba\u7387\u3067\u51fa\u308b\u304b\u3092\u307e\u3068\u3081\u308b\u9053\u5177\u3067\u3059\u3002<\/p>\n<p>\u6761\u4ef6\u3092\u8a18\u9332\u305b\u305a\u5e73\u5747\u72b6\u614b\u3068\u3057\u3066\u6271\u3046\u306a\u3089\u3001A\u306f \u03c1\u0304=\u03bb\u03c1\u2080+(1\u2212\u03bb)\u03c1\u2081\u3001B\u306f \u03c3\u0304=\u03bb\u03c3\u2080+(1\u2212\u03bb)\u03c3\u2081 \u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u78ba\u7387\u7684\u306a\u6df7\u5408\u3067\u3059\u3002\u72b6\u614b\u30d9\u30af\u30c8\u30eb\u3092\u8db3\u3057\u3066\u4e00\u3064\u306e\u7d14\u7c8b\u306a\u91cd\u306d\u5408\u308f\u305b\u3092\u4f5c\u308b\u8a08\u7b97\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u5fe0\u5b9f\u5ea6\u306f F(\u03c1,\u03c3)=Tr\u221a(\u221a\u03c1 \u03c3 \u221a\u03c1) \u3067\u3059\u3002\u884c\u5217\u306e\u5e73\u65b9\u6839\u3092\u7528\u3044\u308b\u3001\u5e73\u65b9\u6839\u5074\u306e\u5b9a\u7fa9\u3092\u63a1\u308a\u307e\u3059\u3002F\u00b2\u3092\u5fe0\u5b9f\u5ea6\u3068\u547c\u3076\u6587\u732e\u3082\u3042\u308b\u305f\u3081\u3001\u6570\u5024\u306b\u306f\u3069\u3061\u3089\u304b\u3092\u4ed8\u3051\u307e\u3059\u3002\u6b63\u898f\u5316\u3055\u308c\u305f\u72b6\u614b\u3067\u306fF\u306f0\u304b\u30891\u3067\u3001\u76f4\u4ea4\u3059\u308b\u72b6\u614b\u306a\u30890\u3001\u540c\u3058\u72b6\u614b\u306a\u30891\u3067\u3059\u3002<\/p>\n<p>\u5171\u540c\u51f9\u6027\u306f\u3001\u6b21\u306e\u95a2\u4fc2\u3092\u4e0e\u3048\u307e\u3059\u3002[1\u3001\u7cfb3.26]<\/p>\n<p><strong>F(\u03c1\u0304,\u03c3\u0304) \u2265 \u03bbF(\u03c1\u2080,\u03c3\u2080)+(1\u2212\u03bb)F(\u03c1\u2081,\u03c3\u2081)<\/strong><\/p>\n<p>\u5de6\u8fba\u306f\u5e73\u5747\u72b6\u614b\u3069\u3046\u3057\u306e\u6bd4\u8f03\u3001\u53f3\u8fba\u306f\u5bfe\u5fdc\u3059\u308b\u6761\u4ef6\u3054\u3068\u306b\u6bd4\u8f03\u3057\u305f\u5f8c\u306e\u5e73\u5747\u3067\u3059\u3002\u4e8c\u3064\u306e\u8a08\u7b97\u306e\u9806\u5e8f\u3092\u4ea4\u63db\u3057\u3066\u3082\u540c\u3058\u3001\u3068\u3044\u3046\u5f0f\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001A\u3068B\u3067\u540c\u3058\u03bb\u3092\u4f7f\u3044\u3001\u3069\u306e\u6761\u4ef6\u3092\u5bfe\u5fdc\u3055\u305b\u308b\u304b\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5f0f\u3078\u5225\u3005\u306e\u91cd\u307f\u3092\u305d\u306e\u307e\u307e\u4ee3\u5165\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h2>\u3069\u306e\u6761\u4ef6\u3067\u3082\u9006\u306a\u306e\u306b\u3001\u5e73\u5747\u306f\u540c\u3058\u306b\u306a\u308b\u4f8b<\/h2>\n<p>\u6761\u4ef60\u3067\u306f\u3001A\u304c|0\u27e9\u3001B\u304c|1\u27e9\u3092\u6e96\u5099\u3059\u308b\u3068\u3057\u307e\u3059\u3002\u6761\u4ef61\u3067\u306f\u9006\u306b\u3001A\u304c|1\u27e9\u3001B\u304c|0\u27e9\u3092\u6e96\u5099\u3057\u307e\u3059\u3002|0\u27e9\u3068|1\u27e9\u306f\u76f4\u4ea4\u3059\u308b\u306e\u3067\u3001\u6761\u4ef60\u306e\u5fe0\u5b9f\u5ea6\u3082\u6761\u4ef61\u306e\u5fe0\u5b9f\u5ea6\u30820\u3067\u3059\u3002\u5f93\u3063\u3066\u3001\u53f3\u8fba\u306e\u52a0\u91cd\u5e73\u5747\u306f\u03bb\u306e\u5024\u306b\u3088\u3089\u305a0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3068\u3053\u308d\u304c\u6761\u4ef6\u3092\u6368\u3066\u3066\u5e73\u5747\u3059\u308b\u3068\u3001A\u306e\u5bfe\u89d2\u6210\u5206\u306f(\u03bb,1\u2212\u03bb)\u3001B\u306f(1\u2212\u03bb,\u03bb)\u3067\u3059\u3002\u3069\u3061\u3089\u3082|0\u27e9\u3001|1\u27e9\u3092\u78ba\u7387\u7684\u306b\u6df7\u305c\u305f\u5bfe\u89d2\u884c\u5217\u306b\u306a\u308a\u307e\u3059\u3002\u5bfe\u89d2\u72b6\u614b\u306eF\u306f\u3001\u5bfe\u5fdc\u3059\u308b\u78ba\u7387\u306e\u7a4d\u306e\u5e73\u65b9\u6839\u3092\u8db3\u305b\u3070\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p><strong>F(\u03c1\u0304,\u03c3\u0304)=\u221a(\u03bb(1\u2212\u03bb))+\u221a((1\u2212\u03bb)\u03bb)=2\u221a(\u03bb(1\u2212\u03bb))<\/strong><\/p>\n<p>\u03bb=0.1\u306a\u3089F=0.6\u3001F\u00b2=0.36\u3067\u3059\u3002\u03bb=0.25\u306a\u3089F\u22480.8660\u3001F\u00b2=0.75\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u3057\u3066\u03bb=0.5\u3067\u306f\u3001A\u3082B\u3082\u6700\u5927\u6df7\u5408\u72b6\u614bI\/2\u3068\u306a\u308a\u3001F=F\u00b2=1\u3067\u3059\u3002\u3069\u306e\u6761\u4ef6\u3067\u3082\u9006\u306e\u6e96\u5099\u3092\u3057\u3066\u3044\u305f\u3053\u3068\u306f\u3001\u6761\u4ef6\u3092\u533a\u5225\u3057\u306a\u3044\u5e73\u5747\u72b6\u614b\u3060\u3051\u304b\u3089\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure><a href=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-fidelity-mixture-forgotten-label-20261022-figure-be9a7581f0bd.png\"><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-fidelity-mixture-forgotten-label-20261022-figure-be9a7581f0bd.png\" style=\"max-width:100%;height:auto\" alt=\"\u6761\u4ef6\u5225\u306e\u5fe0\u5b9f\u5ea6F\u306f\u3069\u3061\u3089\u306e\u679d\u30820\u3002\u5e73\u5747\u72b6\u614b\u3069\u3046\u3057\u3067\u306f\u3001\u6761\u4ef60\u306e\u91cd\u307f\u304c0.1\u306a\u3089F0.6\u30010.25\u306a\u3089\u7d040.866\u30010.5\u306a\u30891\u3002\"><\/a><figcaption>\u6307\u5b9a\u3057\u305f\u5bfe\u89d2\u5bc6\u5ea6\u884c\u5217\u306e\u72ec\u81ea\u8a08\u7b97\u3002\u4e21\u6e96\u5099\u65b9\u6cd5\u3067\u540c\u3058\u6761\u4ef6\u91cd\u307f\u3092\u4f7f\u7528\u3057\u3001F\u306f\u5e73\u65b9\u6839\u5074\u306e\u5b9a\u7fa9\u3002\u88c5\u7f6e\u306e\u6027\u80fd\u6e2c\u5b9a\u3067\u306f\u306a\u3044\u3002\u539f\u5bf8\u753b\u50cf\u3092\u958b\u3051\u307e\u3059\u3002<\/figcaption><\/figure>\n<h2>\u6761\u4ef6\u306e\u30e9\u30d9\u30eb\u3092\u4e00\u7dd2\u306b\u6b8b\u3059\u3068\u4f55\u304c\u9055\u3046\u304b<\/h2>\n<p>\u534a\u3005\u306e\u4f8b\u3067\u3001\u6e2c\u308b\u4eba\u306b\u91cf\u5b50\u72b6\u614b\u3060\u3051\u3092\u6e21\u3059\u3068\u3057\u307e\u3059\u3002A\u3082B\u3082I\/2\u306a\u306e\u3067\u3001\u305d\u306e\u72b6\u614b\u3060\u3051\u306b\u884c\u3046\u6e2c\u5b9a\u306e\u7d71\u8a08\u304b\u3089A\u3068B\u3092\u533a\u5225\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u5e73\u5747\u72b6\u614b\u304c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u306e\u610f\u5473\u3067\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u300c\u4eca\u56de\u306f\u6761\u4ef60\u3060\u3063\u305f\u300d\u300c\u4eca\u56de\u306f\u6761\u4ef61\u3060\u3063\u305f\u300d\u3068\u3044\u3046\u53e4\u5178\u7684\u306a\u30e9\u30d9\u30eb\u3082\u4e00\u7dd2\u306b\u6e21\u305b\u3070\u4e8b\u60c5\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u91cf\u5b50\u30d3\u30c3\u30c8\u3092|0\u27e9\u304b|1\u27e9\u304b\u6e2c\u308a\u3001\u30e9\u30d9\u30eb\u3068\u7d44\u307f\u5408\u308f\u305b\u308c\u3070\u3001\u3053\u306e\u7406\u60f3\u4f8b\u3067\u306fA\u304bB\u304b\u3092\u78ba\u5b9f\u306b\u5224\u5b9a\u3067\u304d\u307e\u3059\u3002\u6761\u4ef60\u30670\u306a\u3089A\u3001\u6761\u4ef60\u30671\u306a\u3089B\u3068\u3044\u3046\u3088\u3046\u306b\u3001\u5bfe\u5fdc\u304c\u7570\u306a\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u30e9\u30d9\u30eb\u3092\u542b\u3081\u305f\u5168\u4f53\u3092\u3001\u9806\u306b(\u6761\u4ef60\u30fb\u91cf\u5b500\u3001\u6761\u4ef60\u30fb\u91cf\u5b501\u3001\u6761\u4ef61\u30fb\u91cf\u5b500\u3001\u6761\u4ef61\u30fb\u91cf\u5b501)\u3068\u3044\u3046\u56db\u3064\u306e\u9805\u3067\u8868\u3059\u3068\u3001A\u306e\u5bfe\u89d2\u6210\u5206\u306f(\u03bb,0,0,1\u2212\u03bb)\u3001B\u306f(0,\u03bb,1\u2212\u03bb,0)\u3067\u3059\u3002\u91cd\u306a\u308b\u9805\u304c\u306a\u3044\u305f\u3081\u3001\u3053\u306e\u5168\u4f53\u306eF\u306f0\u306b\u306a\u308a\u307e\u3059\u3002\u30e9\u30d9\u30eb\u3092\u7121\u8996\u3057\u3066\u91cf\u5b50\u30d3\u30c3\u30c8\u3060\u3051\u3092\u6b8b\u3057\u305f\u3068\u304d\u306b\u3001\u5148\u307b\u3069\u306e\u4e8c\u3064\u306e\u5e73\u5747\u72b6\u614b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u540c\u3058\u5b9f\u9a13\u8a18\u9332\u3067\u3082\u3001\u6761\u4ef6\u30e9\u30d9\u30eb\u3092\u6b8b\u3057\u305f\u96c6\u8a08\u3068\u3001\u6761\u4ef6\u3092\u307e\u3068\u3081\u305f\u96c6\u8a08\u3067\u306f\u7b54\u3048\u3089\u308c\u308b\u554f\u3044\u304c\u9055\u3044\u307e\u3059\u3002\u5fe0\u5b9f\u5ea6\u304c0\u304b\u30891\u3078\u5909\u308f\u3063\u305f\u306e\u306f\u3001\u88c5\u7f6e\u304c\u4fee\u5fa9\u3055\u308c\u305f\u8a3c\u660e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6bd4\u8f03\u306b\u4f7f\u3046\u60c5\u5831\u3092\u6e1b\u3089\u3057\u305f\u3053\u3068\u3067\u3001\u5dee\u3092\u898b\u5206\u3051\u3089\u308c\u306a\u304f\u306a\u3063\u305f\u4f8b\u3067\u3059\u3002<\/p>\n<h2>\u9ad8\u3044\u5e73\u5747\u5024\u3092\u3001\u6761\u4ef6\u5225\u306e\u5408\u683c\u306b\u8aad\u307f\u66ff\u3048\u306a\u3044<\/h2>\n<p>\u6e96\u5099\u306e\u8a55\u4fa1\u3067\u306f\u3001\u6700\u7d42\u7684\u306a\u5229\u7528\u8005\u304c\u6761\u4ef6\u3092\u77e5\u3089\u305a\u3001\u5e73\u5747\u72b6\u614b\u3060\u3051\u3092\u4f7f\u3046\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7528\u9014\u306a\u3089\u5e73\u5747\u72b6\u614b\u3069\u3046\u3057\u3092\u6bd4\u3079\u308b\u3053\u3068\u306b\u306f\u610f\u5473\u304c\u3042\u308a\u307e\u3059\u3002\u53cd\u5bfe\u306b\u3001\u5404\u5236\u5fa1\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u7279\u5b9a\u306e\u72b6\u614b\u3092\u4f5c\u308a\u305f\u3044\u5834\u5408\u3001\u5e73\u5747\u72b6\u614b\u306eF\u3060\u3051\u3067\u306f\u6761\u4ef6\u306e\u53d6\u308a\u9055\u3048\u3092\u898b\u9003\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\u307e\u305a\u6bd4\u8f03\u306e\u5bfe\u8c61\u304c\u300c\u6761\u4ef6\u5225\u306e\u6e96\u5099\u300d\u306a\u306e\u304b\u300c\u6761\u4ef6\u3092\u6df7\u305c\u305f\u51fa\u529b\u300d\u306a\u306e\u304b\u3092\u6c7a\u3081\u307e\u3059\u3002\u6761\u4ef6\u5225\u306e\u4e00\u81f4\u304c\u5fc5\u8981\u306a\u3089\u3001\u679d\u306e\u5bfe\u5fdc\u3068\u91cd\u307f\u3092\u6b8b\u3057\u3001\u5404\u679d\u306eF\u3084\u305d\u306e\u5206\u5e03\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u540c\u3058\u5e73\u5747\u72b6\u614b\u3092\u4f5c\u308b\u6e96\u5099\u65b9\u6cd5\u306f\u4e00\u610f\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u5e73\u5747\u72b6\u614b\u3092\u77e5\u3063\u305f\u3060\u3051\u3067\u500b\u3005\u306e\u6e96\u5099\u306e\u5185\u8a33\u3092\u5fa9\u5143\u3067\u304d\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001\u4e0d\u7b49\u5f0f\u306e\u53f3\u8fba\u304c\u9ad8\u3044\u3053\u3068\u306f\u5de6\u8fba\u306e\u4e0b\u9650\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u5de6\u8fba\u304c\u9ad8\u3044\u3053\u3068\u304b\u3089\u53f3\u8fba\u3082\u9ad8\u3044\u3068\u9006\u5411\u304d\u306b\u63a8\u8ad6\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4eca\u56de\u306e\u4f8b\u306f\u5de6\u8fba\u304c1\u3067\u53f3\u8fba\u304c0\u306b\u306a\u308b\u3001\u6700\u3082\u306f\u3063\u304d\u308a\u3057\u305f\u53cd\u4f8b\u3067\u3059\u3002\u5e73\u5747\u72b6\u614b\u306e\u6570\u5024\u3092\u6761\u4ef6\u5225\u8a55\u4fa1\u306e\u4ee3\u308f\u308a\u306b\u3059\u308b\u524d\u306b\u3001\u3069\u3061\u3089\u5411\u304d\u306e\u95a2\u4fc2\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h2>\u5f0f\u3068\u6570\u5024\u306b\u6b8b\u3057\u3066\u304a\u304d\u305f\u3044\u6761\u4ef6<\/h2>\n<p>\u7cfb3.26\u306f\u3001\u540c\u3058\u6709\u9650\u6b21\u5143\u306e\u7a7a\u9593\u4e0a\u306e\u6b63\u898f\u5316\u3055\u308c\u305f\u5bc6\u5ea6\u884c\u5217\u3068\u30010\u4ee5\u4e0a1\u4ee5\u4e0b\u306e\u03bb\u3092\u5bfe\u8c61\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306e\u6570\u5024\u306f\u65e2\u77e5\u306e\u5bfe\u89d2\u884c\u5217\u304b\u3089\u8a08\u7b97\u3057\u305f\u7406\u60f3\u5024\u3067\u3059\u3002\u672a\u77e5\u306e\u5b9f\u9a13\u72b6\u614b\u3092\u6709\u9650\u56de\u306e\u6e2c\u5b9a\u304b\u3089\u63a8\u5b9a\u3059\u308b\u3068\u304d\u306e\u8aa4\u5dee\u3001\u6761\u4ef6\u306e\u8a18\u9332\u30df\u30b9\u3001\u6e96\u5099\u306e\u6642\u9593\u5909\u52d5\u306f\u8a55\u4fa1\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>F\u00b2\u3067\u5831\u544a\u3059\u308b\u5834\u5408\u3082\u3001\u5148\u306bF\u3067\u8ff0\u3079\u305f\u4e0d\u7b49\u5f0f\u306e\u5024\u3092\u4e0d\u7528\u610f\u306b\u7f6e\u304d\u63db\u3048\u307e\u305b\u3093\u3002\u3053\u306e\u4f8b\u306a\u3089F=0.6\u3068F\u00b2=0.36\u3092\u4f75\u8a18\u3067\u304d\u307e\u3059\u304c\u3001\u5f0f\u306e\u5de6\u8fba\u3060\u3051\u3092\u4e8c\u4e57\u3057\u305f\u308a\u3001\u52a0\u91cd\u5e73\u5747\u3068\u4e8c\u4e57\u3092\u81ea\u7531\u306b\u4ea4\u63db\u3057\u305f\u308a\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5b9a\u7fa9\u3001\u91cd\u307f\u3001\u679d\u306e\u5bfe\u5fdc\u3001\u6b8b\u3057\u305f\u30e9\u30d9\u30eb\u3092\u6570\u5024\u306e\u6a2a\u306b\u7f6e\u304f\u3053\u3068\u3067\u3001\u4f55\u304c\u8fd1\u304f\u306a\u3063\u305f\u6bd4\u8f03\u306a\u306e\u304b\u3092\u8aad\u307f\u53d6\u308c\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li>John Watrous, <a href=\"https:\/\/cs.uwaterloo.ca\/~watrous\/TQI\/TQI.double.3.pdf\">The Theory of Quantum Information, Chapter 3<\/a>\uff082018\u5e74\u3001\u8457\u8005\u516c\u958b\u7248\uff09\u3001\u00a73.2.3\u3001\u7cfb3.26\u3001\u672c\u6587155\u2013156\u9801\u3001\u5f0f3.170\u20133.172\u3002\u5171\u540c\u51f9\u6027\u3068\u5e73\u65b9\u6839\u5074\u306e\u5fe0\u5b9f\u5ea6\u3092\u53c2\u7167\u3002\u6761\u4ef6\u5225\u30fb\u5e73\u5747\u72b6\u614b\u30fb\u30e9\u30d9\u30eb\u4ed8\u304d\u72b6\u614b\u306e\u6570\u5024\u3068\u6bd4\u8f03\u56f3\u306f\u3001\u660e\u793a\u3057\u305f\u5bc6\u5ea6\u884c\u5217\u306b\u3088\u308b\u72ec\u81ea\u8a08\u7b97\u3067\u3059\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8c\u3064\u306e\u6e96\u5099\u65b9\u6cd5\u3092\u6bd4\u3079\u308b\u3068\u304d\u3001\u6761\u4ef6\u3054\u3068\u306b\u306f\u307e\u3063\u305f\u304f\u9055\u3046\u91cf\u5b50\u72b6\u614b\u306a\u306e\u306b\u3001\u6761\u4ef6\u3092\u533a\u5225\u305b\u305a\u5e73\u5747\u3059\u308b\u3068\u540c\u3058\u72b6\u614b\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u300c\u5e73\u5747\u72b6\u614b\u306e\u5fe0\u5b9f\u5ea6\u304c\u9ad8\u3044\u300d\u3053\u3068\u3068\u3001\u300c\u5404\u6761\u4ef6\u3067\u72d9\u3044\u3069\u304a\u308a\u306e\u72b6\u614b\u3092\u6e96\u5099\u3067\u304d\u305f\u300d\u3053\u3068\u306f\u3001\u540c\u3058\u8a55\u4fa1\u3067\u306f\u3042\u308a [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1263,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[30],"tags":[184],"class_list":["post-1265","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computing","tag-quantum-computers"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-fidelity-mixture-forgotten-label-20261022-featured-b250f2d37e44.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1265"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1265\/revisions"}],"predecessor-version":[{"id":1266,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1265\/revisions\/1266"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1263"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}