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\u03b2|011\u27e9<\/code>\u3068\u306a\u308a\u307e\u3059\u3002100\u3082011\u3082\u300c1\u30682\u300d\u306f\u4e0d\u4e00\u81f4\u3001\u300c2\u30683\u300d\u306f\u4e00\u81f4\u306a\u306e\u3067\u3001\u7d50\u679c\u306f10\u3067\u3059\u3002\u03b1\u3084\u03b2\u304c\u3069\u306e\u5024\u3067\u3042\u3063\u3066\u3082\u3001\u540c\u3058\u8aa4\u308a\u306a\u3089\u540c\u3058\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u300210\u3092\u5f97\u305f\u3089\u4f4d\u7f6e1\u3078\u3082\u3046\u4e00\u5ea6X\u3092\u9069\u7528\u3057\u3001\u4e8c\u5ea6\u306e\u53cd\u8ee2\u3067\u5143\u3078\u623b\u305b\u307e\u3059\u3002<\/p>\n<p>\u540c\u69d8\u306b\u3001\u4f4d\u7f6e2\u3060\u3051\u306e\u53cd\u8ee2\u306a\u308911\u3001\u4f4d\u7f6e3\u3060\u3051\u306a\u308901\u3067\u3059\u3002\u300c\u8aa4\u308a\u306a\u3057\u3001\u4e00\u304b\u6240\u76ee\u3001\u4e8c\u304b\u6240\u76ee\u3001\u4e09\u304b\u6240\u76ee\u300d\u3068\u3044\u3046\u56db\u3064\u306e\u5019\u88dc\u3092\u3001\u4e8c\u3064\u306e\u6e2c\u5b9a\u7d50\u679c\u3067\u533a\u5225\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u5bfe\u5fdc\u3092\u305d\u306e\u307e\u307e\u8a02\u6b63\u306b\u4f7f\u3046\u306b\u306f\u3001\u5bfe\u8c61\u3092\u4e00\u304b\u6240\u307e\u3067\u306eX\u8aa4\u308a\u306b\u7d5e\u3063\u3066\u3044\u308b\u3068\u3044\u3046\u524d\u63d0\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<h2>\u72b6\u614b\u30d9\u30af\u30c8\u30eb\u3067\u78ba\u304b\u3081\u308b\u3068\u3001\u8a02\u6b63\u5f8c\u306e\u4fc2\u6570\u304c\u623b\u308b<\/h2>\n<p>\u72ec\u81ea\u306e8\u6210\u5206\u306e\u72b6\u614b\u30d9\u30af\u30c8\u30eb\u8a08\u7b97\u3067\u3001\u7b26\u53f7\u5316\u3001\u8aa4\u308a\u3001\u30d1\u30ea\u30c6\u30a3\u30fc\u6e2c\u5b9a\u3001\u6761\u4ef6\u4ed8\u304d\u8a02\u6b63\u3092\u518d\u73fe\u3057\u307e\u3057\u305f\u3002\u4f8b\u306b\u4f7f\u3063\u305f\u5165\u529b\u306f\u30010\u306e\u78ba\u7387\u304c0.3\u30011\u306e\u78ba\u7387\u304c0.7\u3067\u30011\u5074\u306b0.4\u30e9\u30b8\u30a2\u30f3\u306e\u76f8\u5bfe\u4f4d\u76f8\u3092\u6301\u3064\u72b6\u614b\u3067\u3059\u30020\u30681\u304c\u540c\u3058\u5272\u5408\u3068\u3044\u3046\u7279\u5225\u306a\u5834\u5408\u3060\u3051\u3067\u306a\u304f\u3001\u4fc2\u6570\u306b\u504f\u308a\u3068\u4f4d\u76f8\u304c\u3042\u308b\u4f8b\u3092\u9078\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p>\u8aa4\u308a\u306a\u3057\u3068\u3001\u4e00\u304b\u6240\u3060\u3051\u306e\u4e09\u901a\u308a\u306eX\u8aa4\u308a\u3067\u306f\u3001\u8a02\u6b63\u5f8c\u306e\u72b6\u614b\u306f\u3059\u3079\u3066\u5143\u306e\u7b26\u53f7\u5316\u72b6\u614b\u3068\u4e00\u81f4\u3057\u307e\u3057\u305f\u3002\u4e8c\u3064\u306e\u72b6\u614b\u306e\u5185\u7a4d\u306e\u7d76\u5bfe\u5024\u3092\u4e8c\u4e57\u3059\u308b\u6307\u6a19\u3082\u3001\u56db\u901a\u308a\u3068\u3082\u6570\u5024\u8aa4\u5dee\u306e\u7bc4\u56f2\u30671\u3067\u3057\u305f\u3002\u3055\u3089\u306b\u7570\u306a\u308b\u4fc2\u6570\u3092\u6301\u3064\u4e09\u3064\u306e\u5165\u529b\u3067\u3082\u540c\u3058\u691c\u67fb\u3092\u884c\u3044\u3001\u30b7\u30f3\u30c9\u30ed\u30fc\u30e0\u304c\u4fdd\u5b58\u60c5\u5831\u306e\u4fc2\u6570\u306b\u4f9d\u5b58\u3057\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-three-qubit-bitflip-syndrome-20261022-figure-21f4c796fb7d.png\" alt=\"\u96a3\u63a5\u30d1\u30ea\u30c6\u30a3\u30fc\u3092\u4f7f\u3046\u72ec\u81ea\u8a08\u7b97\u3002\u8aa4\u308a\u306a\u3057\u306f00\u3067\u64cd\u4f5c\u306a\u3057\u3001X1\u306f10\u3067X1\u3001X2\u306f11\u3067X2\u3001X3\u306f01\u3067X3\u3092\u9069\u7528\u3057\u3001\u9078\u3093\u3060\u5165\u529b\u3067\u306f\u5168\u3066\u5143\u306e\u72b6\u614b\u3078\u623b\u308b\u3002\u4e00\u65b9X1\u3068X2\u306e\u4e8c\u91cd\u8aa4\u308a\u306f01\u3067X3\u3068\u8aa4\u8a3a\u3057\u3001Z1\u306e\u4f4d\u76f8\u8aa4\u308a\u306f00\u3067\u691c\u51fa\u3055\u308c\u306a\u3044\u3002\" style=\"width:100%;height:auto\"\/><figcaption>\u4e0a\u306e\u56db\u884c\u304c\u60f3\u5b9a\u3057\u305f\u8a02\u6b63\u5bfe\u8c61\u3002\u4e0b\u306e\u4e8c\u884c\u306f\u540c\u3058\u8a3a\u65ad\u898f\u5247\u306e\u9650\u754c\u3092\u793a\u3059\u3002\u7406\u60f3\u7684\u306a\u72b6\u614b\u8a08\u7b97\u3067\u3042\u308a\u3001\u5b9f\u6a5f\u306e\u6e2c\u5b9a\u5fe0\u5b9f\u5ea6\u3084\u8aa4\u308a\u8a02\u6b63\u6027\u80fd\u306e\u5b9f\u8a3c\u3067\u306f\u306a\u3044\u3002<\/figcaption><\/figure>\n<p>\u3053\u306e\u8a08\u7b97\u3067\u306f\u3001\u30d1\u30ea\u30c6\u30a3\u30fc\u304c0\u304b1\u304b\u306b\u5bfe\u5fdc\u3059\u308b\u90e8\u5206\u7a7a\u9593\u3078\u72b6\u614b\u3092\u5c04\u5f71\u3057\u3001\u305d\u306e\u78ba\u7387\u3068\u6e2c\u5b9a\u5f8c\u306e\u72b6\u614b\u3092\u8abf\u3079\u3066\u3044\u307e\u3059\u3002\u5404\u91cf\u5b50\u30d3\u30c3\u30c8\u306e\u5024\u3092\u5148\u306b\u5168\u90e8\u8aad\u307f\u51fa\u3057\u3066\u304b\u3089\u3001\u53e4\u5178\u7684\u306b\u6bd4\u8f03\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u88c5\u4e0a\u306e\u88dc\u52a9\u91cf\u5b50\u30d3\u30c3\u30c8\u3084\u6e2c\u5b9a\u56de\u8def\u306f\u3053\u3053\u3067\u306f\u7701\u7565\u3057\u3001\u7406\u60f3\u7684\u306a\u30d1\u30ea\u30c6\u30a3\u30fc\u6e2c\u5b9a\u305d\u306e\u3082\u306e\u3092\u30e2\u30c7\u30eb\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30b7\u30f3\u30c9\u30ed\u30fc\u30e0\u304c\u540c\u3058\u3067\u3082\u3001\u60f3\u5b9a\u5916\u306e\u8aa4\u308a\u306f\u76f4\u305b\u306a\u3044<\/h2>\n<p>\u4f4d\u7f6e1\u3068\u4f4d\u7f6e2\u304c\u4e21\u65b9\u53cd\u8ee2\u3059\u308b\u3068\u3001\u72b6\u614b\u306f<code>\u03b1|110\u27e9 + \u03b2|001\u27e9<\/code>\u306b\u306a\u308a\u307e\u3059\u3002\u96a3\u63a5\u30d1\u30ea\u30c6\u30a3\u30fc\u306f01\u3067\u3001\u4f4d\u7f6e3\u3060\u3051\u304c\u53cd\u8ee2\u3057\u305f\u3068\u304d\u3068\u540c\u3058\u3067\u3059\u3002\u4e00\u304b\u6240\u306e\u8aa4\u308a\u3068\u4eee\u5b9a\u3057\u305f\u8a02\u6b63\u5668\u306f\u4f4d\u7f6e3\u3092\u53cd\u8ee2\u3055\u305b\u308b\u305f\u3081\u3001\u7d50\u679c\u306f<code>\u03b1|111\u27e9 + \u03b2|000\u27e9<\/code>\u3068\u306a\u308a\u307e\u3059\u3002\u4fc2\u6570\u306e\u7f6e\u304b\u308c\u305f\u5148\u304c\u5165\u308c\u66ff\u308f\u308a\u3001\u5143\u306e\u60c5\u5831\u3078\u4e00\u822c\u306b\u306f\u623b\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u4f4d\u76f8\u53cd\u8ee2Z\u3067\u306f\u3001\u3055\u3089\u306b\u5225\u306e\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002\u4f4d\u7f6e1\u3060\u3051\u306bZ\u304c\u4f5c\u7528\u3059\u308b\u3068\u3001\u72b6\u614b\u306f<code>\u03b1|000\u27e9 \u2212 \u03b2|111\u27e9<\/code>\u3068\u306a\u308a\u307e\u3059\u3002000\u3068111\u306e\u4e26\u3073\u81ea\u4f53\u306f\u5909\u308f\u3089\u306a\u3044\u306e\u3067\u3001\u30d1\u30ea\u30c6\u30a3\u30fc\u306f00\u306e\u307e\u307e\u3067\u3059\u3002\u6bd4\u8f03\u7d50\u679c\u306b\u7570\u5e38\u304c\u306a\u304f\u3066\u3082\u3001\u76f8\u5bfe\u7684\u306a\u7b26\u53f7\u306f\u5909\u308f\u3063\u3066\u3044\u307e\u3059\u3002[1\u300121\u30da\u30fc\u30b8] \u5148\u307b\u3069\u306e\u5165\u529b\u4f8b\u3067\u306f\u3001\u5143\u3068\u306e\u5185\u7a4d\u306e\u7d76\u5bfe\u5024\u306e\u4e8c\u4e57\u306f0.16\u3067\u3057\u305f\u300200\u304c\u8fd4\u3063\u305f\u3053\u3068\u3060\u3051\u3092\u3001\u4fdd\u5b58\u60c5\u5831\u304c\u7121\u50b7\u3067\u3042\u308b\u8a3c\u62e0\u306b\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001\u3042\u308b\u7279\u5225\u306a\u5165\u529b\u304c\u8aa4\u308a\u306e\u5f8c\u3067\u3082\u5909\u308f\u3089\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u305d\u306e\u7b26\u53f7\u304c\u4efb\u610f\u306e\u672a\u77e5\u72b6\u614b\u3092\u5b88\u308c\u305f\u3053\u3068\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u8a02\u6b63\u65b9\u5f0f\u3092\u691c\u8a3c\u3059\u308b\u969b\u306f\u3001\u305f\u307e\u305f\u307e\u5909\u5316\u3057\u306b\u304f\u3044\u4e00\u3064\u306e\u5165\u529b\u3060\u3051\u3092\u4f7f\u3046\u306e\u3067\u306f\u306a\u304f\u3001\u5b88\u308b\u72b6\u614b\u306e\u7bc4\u56f2\u3068\u3001\u5bfe\u8c61\u306b\u3059\u308b\u8aa4\u308a\u306e\u7d44\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u8aa4\u308a\u304c\u6e1b\u308b\u3068\u3044\u3046\u8a08\u7b97\u306b\u306f\u3001\u3069\u3093\u306a\u6761\u4ef6\u304c\u5165\u308b\u304b<\/h2>\n<p>\u5404\u7269\u7406\u91cf\u5b50\u30d3\u30c3\u30c8\u304c\u72ec\u7acb\u306b\u78ba\u7387p\u3067X\u53cd\u8ee2\u3057\u3001\u7b26\u53f7\u5316\u30fb\u6e2c\u5b9a\u30fb\u8a02\u6b63\u306f\u5b8c\u5168\u3060\u3068\u4eee\u5b9a\u3059\u308b\u3068\u3001\u3053\u306e\u591a\u6570\u6c7a\u578b\u306e\u8a02\u6b63\u3067\u8ad6\u7406\u53cd\u8ee2\u304c\u6b8b\u308b\u78ba\u7387\u306f\u3001\u4e8c\u304b\u6240\u307e\u305f\u306f\u4e09\u304b\u6240\u3067\u53cd\u8ee2\u3059\u308b\u78ba\u7387\u3067\u3059\u3002\u5f0f\u306f<code>3p\u00b2(1\u2212p) + p\u00b3 = 3p\u00b2 \u2212 2p\u00b3<\/code>\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u672c\u7a3f\u306e\u72ec\u7acb\u53cd\u8ee2\u30e2\u30c7\u30eb\u304b\u3089\u6570\u3048\u4e0a\u3052\u305f\u5024\u3067\u3059\u3002<\/p>\n<p>p\u304c0.01\u306a\u30890.000298\u3001\u3064\u307e\u308a\u7d040.0298%\u3067\u3059\u3002\u7b26\u53f7\u5316\u3057\u306a\u3044\u4e00\u3064\u306e\u91cf\u5b50\u30d3\u30c3\u30c8\u306eX\u53cd\u8ee2\u78ba\u73871%\u3088\u308a\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u6bd4\u8f03\u306f\u4f4d\u76f8\u8aa4\u308a\u3082\u3001\u6e2c\u5b9a\u5668\u306e\u8aa4\u308a\u3082\u3001\u8ffd\u52a0\u3057\u305f\u30b2\u30fc\u30c8\u306e\u5931\u6557\u3082\u6570\u3048\u3066\u3044\u307e\u305b\u3093\u3002\u4e00\u822c\u306e\u91cf\u5b50\u72b6\u614b\u306b\u3064\u3044\u3066\u3001\u3042\u3089\u3086\u308b\u96d1\u97f3\u304c\u3053\u306e\u6bd4\u7387\u3067\u6e1b\u308b\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>\u5b9f\u6a5f\u306e\u65b9\u5f0f\u3092\u6bd4\u8f03\u3059\u308b\u306a\u3089\u3001\u4f55\u3092\u6e2c\u308b\u30b7\u30f3\u30c9\u30ed\u30fc\u30e0\u306a\u306e\u304b\u3001\u533a\u5225\u3067\u304d\u308b\u8aa4\u308a\u306f\u3069\u308c\u304b\u3001\u8ffd\u52a0\u64cd\u4f5c\u306e\u8aa4\u308a\u3084\u76f8\u95a2\u3057\u305f\u96d1\u97f3\u3092\u3069\u3046\u6271\u3063\u305f\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4e09\u3064\u3078\u7b26\u53f7\u5316\u3057\u305f\u3068\u3044\u3046\u500b\u6570\u3060\u3051\u3067\u6027\u80fd\u3092\u5224\u65ad\u305b\u305a\u3001\u4fdd\u5b58\u60c5\u5831\u3092\u8aad\u307f\u51fa\u3055\u305a\u306b\u53d6\u308a\u51fa\u305b\u308b\u8a3a\u65ad\u60c5\u5831\u3068\u3001\u305d\u306e\u8a3a\u65ad\u3067\u533a\u5225\u3067\u304d\u306a\u3044\u8aa4\u308a\u3092\u4e26\u3079\u3066\u898b\u308b\u3068\u3001\u8aa4\u308a\u8a02\u6b63\u306e\u5f79\u5272\u3068\u9650\u754c\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li>John Preskill\u3001Physics 229\u8b1b\u7fa9\u30ce\u30fc\u30c8 Chapter 1\u300cIntroduction and Overview\u300d\u30011.8 Quantum error-correcting codes\u3001\u5370\u5237\u30da\u30fc\u30b820\u201321\u3001\u5f0f1.26\u20131.29\u3068\u4f4d\u76f8\u8aa4\u308a\u306e\u8aac\u660e\u3002<a href=\"https:\/\/www.preskill.caltech.edu\/ph229\/notes\/chap1.pdf\">\u8457\u8005\u516c\u958bPDF<\/a>\uff082026\u5e7410\u670822\u65e5\u53d6\u5f97\uff09\u3002\u6b74\u53f2\u7684\u306a\u8b1b\u7fa9\u30ce\u30fc\u30c8\u306e\u539f\u7406\u8aac\u660e\u3092\u53c2\u7167\u3057\u3001\u5f53\u6642\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u72b6\u6cc1\u3092\u73fe\u5728\u306e\u72b6\u6cc1\u3068\u3057\u3066\u6271\u3063\u3066\u3044\u306a\u3044\u3002\u96a3\u63a5\u30d1\u30ea\u30c6\u30a3\u30fc\u898f\u7d04\u3001\u5165\u529b\u4f8b\u3001\u72b6\u614b\u30d9\u30af\u30c8\u30eb\u8a08\u7b97\u3001\u78ba\u7387\u306e\u6570\u3048\u4e0a\u3052\u3001\u56f3\u306fQuantum Sea\u72ec\u81ea\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u91cf\u5b50\u60c5\u5831\u306e\u8aa4\u308a\u3092\u76f4\u3059\u305f\u3081\u306b\u6e2c\u5b9a\u3059\u308b\u3068\u3001\u5b88\u308a\u305f\u304b\u3063\u305f\u91cd\u306d\u5408\u308f\u305b\u307e\u3067\u5931\u308f\u308c\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3002\u3053\u306e\u7591\u554f\u3078\u306e\u5165\u308a\u53e3\u306b\u306a\u308b\u306e\u304c\u30013\u91cf\u5b50\u30d3\u30c3\u30c8\u306e\u30d3\u30c3\u30c8\u53cd\u8ee2\u7b26\u53f7\u3067\u3059\u3002\u4fdd\u5b58\u3057\u305f0\u304b1\u305d\u306e\u3082\u306e\u3092\u8aad\u3080\u4ee3\u308f\u308a\u306b\u3001\u91cf\u5b50\u30d3\u30c3\u30c8\u540c\u58eb\u306e\u95a2\u4fc2\u3092\u8abf\u3079\u307e\u3059\u3002 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1113,"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-1115","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-three-qubit-bitflip-syndrome-20261022-featured-38138307eb8c.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1115","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=1115"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1115\/revisions"}],"predecessor-version":[{"id":1116,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1115\/revisions\/1116"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1113"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}