{"id":2406,"date":"2026-11-08T03:00:00","date_gmt":"2026-11-07T18:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=2406"},"modified":"2026-11-06T02:40:46","modified_gmt":"2026-11-05T17:40:46","slug":"qs-separable-qubit-data-hiding-20261106","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=2406","title":{"rendered":"\u91cf\u5b50\u30c7\u30fc\u30bf\u79d8\u533f\u3001\u3082\u3064\u308c\u306e\u306a\u30442\u91cf\u5b50\u30d3\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u4f7f\u3046"},"content":{"rendered":"<p>\u4e8c\u4eba\u304c\u305d\u308c\u305e\u308c\u91cf\u5b50\u72b6\u614b\u306e\u534a\u5206\u3092\u6301\u3061\u3001\u6e2c\u5b9a\u7d50\u679c\u3092\u4f55\u5ea6\u3067\u3082\u6559\u3048\u5408\u3048\u308b\u3002\u305d\u308c\u3067\u3082\u53d6\u308a\u51fa\u3057\u306b\u304f\u3044\u60c5\u5831\u304c\u3001\u4e21\u65b9\u306e\u91cf\u5b50\u7cfb\u3092\u307e\u3068\u3081\u3066\u6e2c\u308b\u3068\u8aad\u3081\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u300c\u4f7f\u3048\u308b\u64cd\u4f5c\u306b\u3088\u308b\u5dee\u300d\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u3001\u91cf\u5b50\u30c7\u30fc\u30bf\u79d8\u533f\u3067\u3059\u3002<\/p>\n<p>\u6176\u7199\u5927\u5b66\u306eDonghoon Ha\u6c0f\u3068Jeong San Kim\u6c0f\u306f\u3001\u91cf\u5b50\u3082\u3064\u308c\u3092\u6301\u305f\u306a\u3044\u5206\u96e2\u53ef\u80fd\u306a2\u91cf\u5b50\u30d3\u30c3\u30c8\u72b6\u614b\u3092\u7e70\u308a\u8fd4\u3057\u4f7f\u3044\u30011\u30d3\u30c3\u30c8\u306e\u60c5\u5831\u3092\u96a0\u3059\u7406\u8ad6\u65b9\u5f0f\u3092\u793a\u3057\u307e\u3057\u305f\u3002\u8ad6\u6587\u300cQuantum data hiding with two-qubit separable states\u300d\u306e\u521d\u7a3f\u306f2025\u5e7412\u670817\u65e5\u3002\u3053\u3053\u3067\u306f2026\u5e7411\u67083\u65e5\u306b\u6539\u8a02\u3055\u308c\u305fv2\u3092\u53c2\u7167\u3057\u307e\u3059\u30022\u91cf\u5b50\u30d3\u30c3\u30c8\u3060\u3051\u3067\u5b8c\u5168\u306b\u60c5\u5831\u304c\u96a0\u308c\u308b\u3068\u3044\u3046\u8a71\u3067\u306f\u306a\u304f\u3001\u5c0f\u3055\u306a\u72b6\u614b\u3092\u4f55\u7d44\u3082\u4f7f\u3046\u69cb\u6210\u3067\u3059\u3002<\/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>\u4e8c\u4eba\u304c\u5404\u81ea\u306e\u91cf\u5b50\u7cfb\u3060\u3051\u3092\u64cd\u4f5c\u3057\u3001\u53e4\u5178\u7684\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4ea4\u63db\u3059\u308bLOCC\u3067\u306f\u3001\u96a0\u3057\u305f\u30d3\u30c3\u30c8\u3092\u5f53\u3066\u308b\u6210\u529f\u78ba\u7387\u3092\u3001\u7d44\u6570\u306e\u5897\u52a0\u3068\u3068\u3082\u306b1\/2\u3078\u8fd1\u3065\u3051\u3089\u308c\u307e\u3059\u3002<\/li>\n<li>\u6750\u6599\u3068\u306a\u308b\u306e\u306f\u3001\u4e92\u3044\u306b\u76f4\u4ea4\u3059\u308b\u4e8c\u3064\u306e\u5206\u96e2\u53ef\u80fd\u306a\u6df7\u5408\u72b6\u614b\u3002\u72b6\u614b\u306b\u91cf\u5b50\u3082\u3064\u308c\u304c\u306a\u304f\u3066\u3082\u3001\u5171\u540c\u6e2c\u5b9a\u3068\u306e\u9055\u3044\u306f\u6b8b\u308a\u307e\u3059\u3002<\/li>\n<li>\u5171\u540c\u6e2c\u5b9a\u3092\u8a8d\u3081\u308b\u7406\u60f3\u7684\u306a\u6a21\u578b\u3067\u306f\u3001\u6709\u9650\u306e\u7d44\u6570\u3067\u3082\u30d3\u30c3\u30c8\u3092\u5b8c\u5168\u306b\u53d6\u308a\u51fa\u305b\u307e\u3059\u3002\u5fc5\u8981\u7d44\u6570\u3084\u5b9f\u9a13\u4e0a\u306e\u8aa4\u308a\u307e\u3067\u89e3\u6c7a\u3057\u305f\u7814\u7a76\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4ea4\u63db\u3067\u304d\u3066\u3082\u3001\u540c\u3058\u6e2c\u5b9a\u304c\u3067\u304d\u308b\u3068\u306f\u9650\u3089\u306a\u3044<\/h2>\n<p>LOCC\u306f\u3001Local Operations and Classical Communication\u3001\u5c40\u6240\u64cd\u4f5c\u3068\u53e4\u5178\u901a\u4fe1\u306e\u7565\u3067\u3059\u3002\u30a2\u30ea\u30b9\u3068\u30dc\u30d6\u306f\u81ea\u5206\u306e\u624b\u5143\u306e\u91cf\u5b50\u7cfb\u3092\u64cd\u4f5c\u3057\u3001\u305d\u306e\u7d50\u679c\u306b\u5fdc\u3058\u305f\u53e4\u5178\u60c5\u5831\u3092\u3084\u308a\u53d6\u308a\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u4e8c\u4eba\u306e\u91cf\u5b50\u7cfb\u3092\u3064\u306a\u3050\u5171\u540c\u64cd\u4f5c\u307e\u3067\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u5358\u306b\u300c\u4e8c\u4eba\u304c\u4e00\u5207\u76f8\u8ac7\u3057\u306a\u3044\u300d\u3068\u3044\u3046\u5236\u9650\u3088\u308a\u5f37\u3044\u554f\u3044\u3067\u3059\u3002\u307e\u305f\u3001\u5404\u7d44\u3092\u4e00\u56de\u305a\u3064\u6e2c\u308b\u65b9\u5f0f\u3060\u3051\u306b\u76f8\u624b\u3092\u9650\u5b9a\u3059\u308b\u308f\u3051\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u308c\u305e\u308c\u306e\u624b\u5143\u3067\u8907\u6570\u306e\u91cf\u5b50\u7cfb\u3092\u307e\u3068\u3081\u3066\u6271\u3044\u3001\u53e4\u5178\u901a\u4fe1\u3092\u7d44\u307f\u5408\u308f\u305b\u308bLOCC\u5168\u4f53\u306b\u5bfe\u3057\u3001\u3069\u308c\u3060\u3051\u60c5\u5831\u3092\u96a0\u305b\u308b\u304b\u3092\u8a55\u4fa1\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u5236\u9650\u306e\u306a\u3044\u5171\u540c\u6e2c\u5b9a\u3067\u306f\u3001\u30a2\u30ea\u30b9\u5074\u3068\u30dc\u30d6\u5074\u3092\u5408\u308f\u305b\u305f\u72b6\u614b\u3092\u6e2c\u308c\u307e\u3059\u3002\u4e8c\u3064\u306e\u72b6\u614b\u304c\u76f4\u4ea4\u3057\u3066\u3044\u308c\u3070\u3001\u7406\u60f3\u7684\u306b\u306f\u8aa4\u308a\u306a\u304f\u533a\u5225\u3059\u308b\u6e2c\u5b9a\u304c\u3042\u308a\u307e\u3059\u3002\u8ad6\u6587\u306f\u3001\u3053\u306e\u300c\u5168\u4f53\u306a\u3089\u533a\u5225\u3067\u304d\u308b\u300d\u3068\u300cLOCC\u3067\u306f\u533a\u5225\u3057\u306b\u304f\u3044\u300d\u306e\u5dee\u3092\u3001\u30d3\u30c3\u30c8\u306e\u79d8\u533f\u306b\u7d50\u3073\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u3082\u3064\u308c\u306e\u306a\u3044\u72b6\u614b\u306b\u3082\u3001\u5168\u4f53\u3092\u6e2c\u308b\u5229\u70b9\u304c\u3042\u308b<\/h2>\n<p>\u5206\u96e2\u53ef\u80fd\u306a\u72b6\u614b\u3068\u306f\u3001\u4e8c\u4eba\u305d\u308c\u305e\u308c\u306e\u72b6\u614b\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u7a4d\u72b6\u614b\u3092\u3001\u78ba\u7387\u7684\u306b\u6df7\u305c\u3066\u4f5c\u308c\u308b\u72b6\u614b\u3067\u3059\u3002\u91cf\u5b50\u3082\u3064\u308c\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4e8c\u4eba\u306e\u9593\u306e\u76f8\u95a2\u307e\u3067\u306a\u3044\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u8ad6\u6587\u306e\u4f8b\u3092\u3001\u89d2\u5ea6\u03b8\uff1d\u03c0\/4\u306e\u5834\u5408\u3067\u898b\u3066\u307f\u307e\u3059\u3002|\uff0b\u27e9\u3068|\u2212\u27e9\u306f\u3001|0\u27e9\u3068|1\u27e9\u3092\u7b49\u3057\u3044\u5927\u304d\u3055\u3067\u91cd\u306d\u5408\u308f\u305b\u3001\u76f8\u5bfe\u7684\u306a\u7b26\u53f7\u3092\u5909\u3048\u305f\u72b6\u614b\u3067\u3059\u3002\u9001\u308a\u624b\u306f\u3001\u6b21\u306e\u4e8c\u3064\u306e\u6df7\u5408\u72b6\u614b\u3092\u305d\u308c\u305e\u308c\u78ba\u73871\/2\u3067\u9078\u3073\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u72b6\u614b\u03c1\u2080\uff1a|0\u27e9\u3068|\uff0b\u27e9\u3092\u4e8c\u4eba\u306b\u914d\u308b\u5834\u5408\u3068\u3001\u305d\u306e\u62c5\u5f53\u3092\u5165\u308c\u66ff\u3048\u305f\u5834\u5408\u3092\u3001\u534a\u3005\u3067\u6df7\u305c\u308b\u3002<\/li>\n<li>\u72b6\u614b\u03c1\u2081\uff1a\u4e8c\u4eba\u3068\u3082|1\u27e9\u306e\u5834\u5408\u3068\u3001\u4e8c\u4eba\u3068\u3082|\u2212\u27e9\u306e\u5834\u5408\u3092\u3001\u534a\u3005\u3067\u6df7\u305c\u308b\u3002<\/li>\n<\/ul>\n<p>\u3069\u306e\u6210\u5206\u3082\u7a4d\u72b6\u614b\u306a\u306e\u3067\u3001\u03c1\u2080\u3082\u03c1\u2081\u3082\u5206\u96e2\u53ef\u80fd\u3067\u3059\u3002\u305d\u308c\u3067\u3044\u3066\u3001\u03c1\u2080\u306b\u542b\u307e\u308c\u308b\u6210\u5206\u3068\u03c1\u2081\u306b\u542b\u307e\u308c\u308b\u6210\u5206\u306f\u4e92\u3044\u306b\u76f4\u4ea4\u3057\u3001\u4e8c\u3064\u306e\u6df7\u5408\u72b6\u614b\u306e\u652f\u6301\u7a7a\u9593\u3082\u91cd\u306a\u308a\u307e\u305b\u3093\u3002\u5171\u540c\u6e2c\u5b9a\u306a\u3089\u533a\u5225\u3067\u304d\u307e\u3059\u304c\u3001\u305d\u306e\u305f\u3081\u306b\u5fc5\u8981\u306a\u6e2c\u5b9a\u3092LOCC\u3067\u5b9f\u73fe\u3067\u304d\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n<p>\u300c\u91cf\u5b50\u3082\u3064\u308c\u304c\u306a\u3044\u300d\u3053\u3068\u3068\u3001\u300c\u53e4\u5178\u7684\u306a\u60c5\u5831\u4ea4\u63db\u3060\u3051\u3067\u3001\u5168\u4f53\u306e\u6e2c\u5b9a\u3068\u540c\u3058\u60c5\u5831\u3092\u5f97\u3089\u308c\u308b\u300d\u3053\u3068\u306f\u5225\u3067\u3059\u3002\u3053\u306e\u7814\u7a76\u304c\u5c0f\u3055\u306a\u5206\u96e2\u53ef\u80fd\u72b6\u614b\u3067\u5177\u4f53\u5316\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u305d\u306e\u9055\u3044\u3067\u3059\u3002<\/p>\n<h2>\u96a0\u3059\u306e\u306f\u5404\u7d44\u306e\u30e9\u30d9\u30eb\u3067\u306f\u306a\u304f\u3001\u305d\u306e\u5076\u5947<\/h2>\n<p>\u9001\u308a\u624b\u306f\u03c1\u2080\u304b\u03c1\u2081\u3092\u72ec\u7acb\u306b\u9078\u3093\u3067\u914d\u308b\u64cd\u4f5c\u3092L\u56de\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002\u9078\u3093\u3060\u72b6\u614b\u306e\u30e9\u30d9\u30eb\u3092b\u2081\u3001b\u2082\u3001\u2026\u3001b<sub>L<\/sub>\u3068\u3057\u3001\u3059\u3079\u3066\u3092\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3067\u8db3\u3057\u305f\u30d3\u30c3\u30c8\u3092y\u3068\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30e9\u30d9\u30eb1\u306e\u500b\u6570\u304c\u5076\u6570\u306a\u30890\u3001\u5947\u6570\u306a\u30891\u306b\u306a\u308b\u300c\u5076\u5947\u300d\u3067\u3059\u3002<\/p>\n<p>\u96a0\u3057\u305f\u3044\u30d3\u30c3\u30c8\u3092x\u3068\u3059\u308b\u3068\u3001\u9001\u308a\u624b\u304c\u516c\u958b\u3059\u308b\u53e4\u5178\u60c5\u5831\u306fz\uff1dx\u2295y\u3002\u305f\u3068\u3048\u3070x\uff1d1\u3001\u30e9\u30d9\u30eb\u5217\u304c(1, 0, 1)\u306a\u3089y\uff1d0\u3001\u516c\u958b\u3059\u308bz\u306f1\u3067\u3059\u3002\u53d7\u3051\u624b\u304cx\u3092\u77e5\u308b\u306b\u306f\u3001\u516c\u958b\u3055\u308c\u305fz\u306b\u52a0\u3048\u3066\u3001\u91cf\u5b50\u72b6\u614b\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305f\u5076\u5947y\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5404\u7d44\u306e\u30e9\u30d9\u30eb\u3092\u4e00\u90e8\u63a8\u6e2c\u3067\u304d\u308b\u3053\u3068\u3068\u3001\u9577\u3044\u5217\u5168\u4f53\u306e\u5076\u5947\u3092\u6b63\u3057\u304f\u77e5\u308b\u3053\u3068\u306f\u540c\u3058\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8ad6\u6587\u306f\u3001\u6761\u4ef6\u3092\u6e80\u305f\u3059\u4e8c\u72b6\u614b\u306e\u7d44\u3092\u4f7f\u3048\u3070\u3001L\u3092\u5897\u3084\u3059\u306b\u3064\u308c\u3066LOCC\u306b\u3088\u308b\u30d3\u30c3\u30c8\u306e\u6700\u9069\u306a\u6b63\u7b54\u78ba\u7387\u304c1\/2\u306b\u8fd1\u3065\u304f\u3068\u793a\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u306e\u7b49\u78ba\u7387\u306e\u4f8b\u3067\u306f\u30011\/2\u306f\u30e9\u30f3\u30c0\u30e0\u306b\u7b54\u3048\u308b\u6c34\u6e96\u3067\u3059\u3002<\/p>\n<p>\u5171\u540c\u6e2c\u5b9a\u304c\u3067\u304d\u308c\u3070\u4e8b\u60c5\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u5404\u7d44\u306e\u03c1\u2080\u3068\u03c1\u2081\u306f\u76f4\u4ea4\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u7406\u60f3\u6761\u4ef6\u3067\u306f\u30e9\u30d9\u30eb\u3092\u5b8c\u5168\u306b\u533a\u5225\u3067\u304d\u3001\u5076\u5947\u304b\u3089x\u3082\u5fa9\u5143\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5fa9\u5143\u306e\u5b8c\u5168\u6027\u306f\u3001L\u3092\u7121\u9650\u5927\u306b\u3059\u308b\u3053\u3068\u3092\u5fc5\u8981\u3068\u3057\u307e\u305b\u3093\u3002<\/p>\n<h2>\u300c\u6307\u6570\u7684\u306b\u96a0\u308c\u308b\u300d\u3068\u300c\u5c11\u306a\u3044\u7d44\u6570\u3067\u5341\u5206\u300d\u306f\u5225<\/h2>\n<p>LOCC\u306e\u6700\u9069\u5316\u306f\u96e3\u3057\u3044\u305f\u3081\u3001\u8ad6\u6587\u306f\u305d\u308c\u3092\u542b\u3080\u3001\u3088\u308a\u5e83\u3044PPT\u6e2c\u5b9a\u306e\u96c6\u5408\u3067\u6b63\u7b54\u78ba\u7387\u3092\u4e0a\u304b\u3089\u6291\u3048\u307e\u3059\u3002PPT\u306f\u90e8\u5206\u8ee2\u7f6e\u304c\u6b63\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u3059\u6570\u5b66\u7684\u306a\u6761\u4ef6\u3067\u3059\u3002PPT\u6e2c\u5b9a\u3067\u3055\u3048\u6b63\u7b54\u78ba\u7387\u304c1\/2\u3078\u8fd1\u3065\u304f\u306a\u3089\u3001\u305d\u306e\u4e00\u90e8\u3067\u3042\u308bLOCC\u3067\u3082\u540c\u3058\u7d50\u8ad6\u304c\u5f93\u3044\u307e\u3059\u3002<\/p>\n<p>\u8ad6\u6587\u306e\u4f8b\u3067\u306f\u3001\u72b6\u614b\u3092\u6c7a\u3081\u308b\u89d2\u5ea6\u03b8\u304b\u3089\u8a08\u7b97\u3059\u308b\u91cfq\uff1d4f\u2080(\u03b8)f\u2081(\u03b8)\u304c1\u672a\u6e80\u306b\u306a\u308b\u3068\u3001\u5341\u5206\u6761\u4ef6\u304c\u6210\u7acb\u3057\u307e\u3059\u3002\u56f3\u306e\u7e26\u8ef8\u306f\u3053\u306eq\u3067\u3042\u308a\u3001\u6e2c\u5b9a\u306e\u6210\u529f\u78ba\u7387\u305d\u306e\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure class=\"wp-block-image\"><a href=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-separable-qubit-data-hiding-20261106-figure3-a9e638fcb63a.png\"><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-separable-qubit-data-hiding-20261106-figure3-a9e638fcb63a.png\" alt=\"\u8ad6\u6587\u56f31\u3002\u6a2a\u8ef8\u306f\u89d2\u5ea6\u03b8\u3001\u7e26\u8ef8\u306f\u5341\u5206\u6761\u4ef6\u306e\u91cf4f0(\u03b8)f1(\u03b8)\u3002\u03c0\/6\u3067\u7d040.9998\u3001\u03c0\/4\u3067\u7d040.9983\u3068\u306a\u308a\u3001\u7834\u7dda\u306e1\u3092\u4e0b\u56de\u308b\u3002\u6210\u529f\u78ba\u7387\u305d\u306e\u3082\u306e\u3092\u63cf\u3044\u305f\u56f3\u3067\u306f\u306a\u3044\u3002\" style=\"display:block;width:100%;max-width:960px;height:auto;margin:auto;\"><\/a><figcaption>\u72b6\u614b\u3092\u5b9a\u3081\u308b\u89d2\u5ea6\u3068\u3001\u79d8\u533f\u306e\u5341\u5206\u6761\u4ef6\u306b\u73fe\u308c\u308b\u91cf\u306e\u95a2\u4fc2\u3002Donghoon Ha\u30fbJeong San Kim\u300cQuantum data hiding with two-qubit separable states\u300dv2\u30017\u9801\u3001\u56f31\u3002<a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY 4.0<\/a>\u3002\u539fPDF\u304b\u3089\u56f3\u90e8\u5206\u3092\u5207\u308a\u51fa\u3057\u3001\u5185\u5bb9\u30fb\u8ef8\u30fb\u6570\u5024\u306f\u5909\u66f4\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/figcaption><\/figure>\n<p>\u03b8\uff1d\u03c0\/4\u3067\u306fq\u306f\u7d040.998301\u3067\u3059\u3002\u8ad6\u6587\u306e\u5f0f(42)\u304c\u4e0e\u3048\u308b\u6b63\u7b54\u78ba\u7387\u306e\u4e0a\u9650\u306f\u30011\/2\uff0b(1\/2)q<sup>(L\u22121)\/4<\/sup>\u3002\u3053\u306e\u5f0f\u3092\u8a08\u7b97\u3059\u308b\u3068\u3001\u6b21\u306e\u5024\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\">\n<table style=\"min-width:600px;width:100%;border-collapse:collapse;\">\n<thead>\n<tr>\n<th>\u72b6\u614b\u306e\u7d44\u6570L<\/th>\n<th>\u914d\u308b\u91cf\u5b50\u30d3\u30c3\u30c8\u306e\u7dcf\u6570<\/th>\n<th>\u6b63\u7b54\u78ba\u7387\u306e\u4e0a\u9650<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>100\u7d44<\/td>\n<td>200<\/td>\n<td>\u7d0497.9\uff05<\/td>\n<\/tr>\n<tr>\n<td>1,000\u7d44<\/td>\n<td>2,000<\/td>\n<td>\u7d0482.7\uff05<\/td>\n<\/tr>\n<tr>\n<td>10,000\u7d44<\/td>\n<td>20,000<\/td>\n<td>\u7d0450.7\uff05<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u3053\u308c\u306f\u5b9f\u9a13\u5024\u3067\u3082\u3001\u6700\u9069\u306aLOCC\u6e2c\u5b9a\u3092\u898b\u3064\u3051\u3066\u5f97\u305f\u6b63\u78ba\u306a\u6210\u529f\u78ba\u7387\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u8ad6\u6587\u306e\u4e0a\u9650\u5f0f\u3092\u305d\u306e\u307e\u307e\u8a55\u4fa1\u3057\u305f\u5024\u306a\u306e\u3067\u3001\u5b9f\u969b\u306e\u6700\u9069\u6b63\u7b54\u78ba\u7387\u306f\u3001\u3082\u3063\u3068\u4f4e\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u540c\u3058\u5f0f\u3060\u3051\u306751\uff05\u4ee5\u4e0b\u3092\u4fdd\u8a3c\u3059\u308b\u306b\u306f\u3001\u3053\u306e\u03b8\u306e\u4f8b\u30679,204\u7d44\u3042\u308c\u3070\u8db3\u308a\u307e\u3059\u304c\u3001\u3053\u308c\u3092\u5fc5\u8981\u6700\u5c0f\u7d44\u6570\u3068\u306f\u547c\u3079\u307e\u305b\u3093\u3002<\/p>\n<p>\u5c0f\u3055\u3044\u72b6\u614b\u3092\u6750\u6599\u306b\u3067\u304d\u308b\u70b9\u306f\u3001\u8cc7\u6e90\u3092\u8003\u3048\u308b\u3046\u3048\u3067\u610f\u5473\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u30011\u7d44\u304c2\u91cf\u5b50\u30d3\u30c3\u30c8\u3067\u3042\u308b\u3053\u3068\u3068\u3001\u65b9\u5f0f\u5168\u4f53\u304c2\u91cf\u5b50\u30d3\u30c3\u30c8\u3067\u6e08\u3080\u3053\u3068\u306f\u5225\u3067\u3059\u3002q\u304c1\u306b\u8fd1\u3044\u5834\u5408\u306b\u306f\u3001\u6307\u6570\u7684\u306a\u53ce\u675f\u3092\u8a3c\u660e\u3067\u304d\u3066\u3082\u3001\u4e0a\u9650\u3092\u30e9\u30f3\u30c0\u30e0\u63a8\u6e2c\u306e\u6c34\u6e96\u307e\u3067\u4e0b\u3052\u308b\u305f\u3081\u306e\u7d44\u6570\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u8a3c\u660e\u304c\u793a\u3057\u305f\u7bc4\u56f2\u3068\u3001\u5b9f\u88c5\u306b\u6b8b\u308b\u554f\u3044<\/h2>\n<p>\u3053\u306e\u65b9\u5f0f\u306f\u3001\u53d7\u3051\u624b\u306b\u8a31\u3059\u64cd\u4f5c\u306e\u7bc4\u56f2\u3092\u524d\u63d0\u306b\u3057\u305f\u30c7\u30fc\u30bf\u79d8\u533f\u3067\u3059\u3002\u8a08\u7b97\u91cf\u306e\u5927\u304d\u3055\u3092\u6839\u62e0\u3068\u3059\u308b\u901a\u5e38\u306e\u6697\u53f7\u3068\u3001\u305d\u306e\u307e\u307e\u540c\u3058\u5b89\u5168\u6027\u3092\u4e3b\u5f35\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5171\u540c\u6e2c\u5b9a\u3092\u8a8d\u3081\u308c\u3070\u60c5\u5831\u3092\u53d6\u308a\u51fa\u305b\u308b\u3053\u3068\u306f\u3001\u65b9\u5f0f\u306e\u610f\u56f3\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u8ad6\u6587\u306f\u72b6\u614b\u306e\u8b58\u5225\u3068\u79d8\u533f\u306e\u5341\u5206\u6761\u4ef6\u3092\u4e0e\u3048\u3066\u3044\u307e\u3059\u304c\u3001\u901a\u4fe1\u640d\u5931\u3001\u72b6\u614b\u6e96\u5099\u306e\u8aa4\u5dee\u3001\u8a18\u61b6\u4e2d\u306e\u96d1\u97f3\u3092\u542b\u3081\u3066\u5b9f\u6a5f\u3067\u6027\u80fd\u3092\u691c\u8a3c\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u5c40\u6240\u7684\u306b\u533a\u5225\u3057\u306b\u304f\u3044\u76f4\u4ea4\u72b6\u614b\u306a\u3089\u5fc5\u305a\u30c7\u30fc\u30bf\u79d8\u533f\u3078\u4f7f\u3048\u308b\u306e\u304b\u3001\u3068\u3044\u3046\u4e00\u822c\u7684\u306a\u554f\u3044\u306f\u6b8b\u308a\u307e\u3059\u3002<\/p>\n<p>\u91cf\u5b50\u60c5\u5831\u306e\u5229\u70b9\u3092\u8003\u3048\u308b\u3068\u304d\u3001\u72b6\u614b\u304c\u3082\u3064\u308c\u3066\u3044\u308b\u304b\u3060\u3051\u3067\u306a\u304f\u3001\u3069\u3093\u306a\u6e2c\u5b9a\u3092\u4e8c\u4eba\u306b\u8a31\u3059\u304b\u3092\u898b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5206\u96e2\u53ef\u80fd\u306a\u5c0f\u3055\u306a\u72b6\u614b\u3092\u51fa\u767a\u70b9\u306b\u3001\u305d\u306e\u64cd\u4f5c\u306e\u5dee\u3092\u591a\u6570\u306e\u7d44\u306e\u5076\u5947\u3078\u7a4d\u307f\u91cd\u306d\u305f\u3068\u3053\u308d\u306b\u3001\u3053\u306e\u7814\u7a76\u306e\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u53c2\u8003\u8cc7\u6599<\/h2>\n<ul>\n<li>Donghoon Ha, Jeong San Kim, <a href=\"https:\/\/arxiv.org\/abs\/2512.15095v2\">Quantum data hiding with two-qubit separable states<\/a>, arXiv:2512.15095v2\u3002\u521d\u7a3f2025\u5e7412\u670817\u65e5\u3001v2\u6539\u8a022026\u5e7411\u67083\u65e5\u3002\u7b2cII\u7bc0\u3001\u5b9a\u74061\u3001\u7b2cIII\u7bc0\u306e\u4f8b1\u30fb\u5f0f(33)\uff5e(43)\u3001\u56f31\u3001\u7b2cIV\u7bc0\u3001\u4ed8\u9332A\u3002<a href=\"https:\/\/arxiv.org\/pdf\/2512.15095v2\">\u539f\u8ad6\u6587PDF<\/a>\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8c\u4eba\u304c\u305d\u308c\u305e\u308c\u91cf\u5b50\u72b6\u614b\u306e\u534a\u5206\u3092\u6301\u3061\u3001\u6e2c\u5b9a\u7d50\u679c\u3092\u4f55\u5ea6\u3067\u3082\u6559\u3048\u5408\u3048\u308b\u3002\u305d\u308c\u3067\u3082\u53d6\u308a\u51fa\u3057\u306b\u304f\u3044\u60c5\u5831\u304c\u3001\u4e21\u65b9\u306e\u91cf\u5b50\u7cfb\u3092\u307e\u3068\u3081\u3066\u6e2c\u308b\u3068\u8aad\u3081\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u300c\u4f7f\u3048\u308b\u64cd\u4f5c\u306b\u3088\u308b\u5dee\u300d\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u3001\u91cf\u5b50\u30c7\u30fc\u30bf\u79d8\u533f\u3067\u3059\u3002 \u6176\u7199\u5927\u5b66\u306e [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2403,"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":[480],"class_list":["post-2406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computing","tag-quantum-data-hiding"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-separable-qubit-data-hiding-20261106-ab50d9d19d05.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2406","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=2406"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2406\/revisions"}],"predecessor-version":[{"id":2407,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2406\/revisions\/2407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/2403"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}