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href=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-leaky-mach-zehnder-receiver-20261105-figure3-7886960035a3.png\"><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-leaky-mach-zehnder-receiver-20261105-figure3-7886960035a3.png\" alt=\"\u4e3b\u6642\u9593\u7a93\u3068\u524d\u5f8c\u306e\u691c\u51fa\u7d71\u8a08\u3068\u6821\u6b63\u5024\u304b\u3089\u5358\u4e00\u5149\u5b50\u306e\u5bc4\u4e0e\u3092\u898b\u7a4d\u3082\u308a\u3001\u6f0f\u308c\u3092\u542b\u3080\u4f4d\u76f8\u8aa4\u308a\u8a55\u4fa1\u3068\u5408\u308f\u305b\u3066\u79d8\u5bc6\u9375\u306e\u4e0b\u9650\u3092\u6c42\u3081\u308b\u6d41\u308c\" width=\"720\" height=\"810\" style=\"max-width:100%;height:auto\" loading=\"lazy\"><\/a><figcaption>\u691c\u51fa\u7d71\u8a08\u3068\u88c5\u7f6e\u306e\u60c5\u5831\u3092\u3001\u79d8\u5bc6\u9375\u306e\u4e0b\u9650\u306e\u8a55\u4fa1\u306b\u3064\u306a\u3050\u6982\u5ff5\u56f3\u3002Quantum Sea\u4f5c\u6210\u3002<\/figcaption><\/figure>\n<h2>\u640d\u5931\u3067\u5897\u5e45\u3055\u308c\u306a\u3044\u9805\u3068\u3001\u60aa\u5316\u3059\u308b\u9375\u751f\u6210\u7387<\/h2>\n<p>\u79d8\u5bc6\u9375\u306e\u9577\u3055\u3092\u6c7a\u3081\u308b\u306b\u306f\u3001\u901a\u5e38\u306e\u30d3\u30c3\u30c8\u8aa4\u308a\u3060\u3051\u3067\u306a\u304f\u3001\u76f8\u88dc\u7684\u306a\u6e2c\u5b9a\u3092\u4eee\u60f3\u7684\u306b\u884c\u3063\u305f\u3068\u304d\u306e\u4f4d\u76f8\u8aa4\u308a\u3082\u8a55\u4fa1\u3057\u307e\u3059\u3002\u4f4d\u76f8\u8aa4\u308a\u306e\u4e0a\u9650\u306f\u3001\u76d7\u8074\u8005\u306b\u77e5\u3089\u308c\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u60c5\u5831\u3092\u53d6\u308a\u9664\u304f\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u5897\u5f37\u306e\u91cf\u306b\u95a2\u308f\u308a\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306e\u89e3\u6790\u3067\u306f\u3001\u691c\u51fa\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u306b\u5916\u3078\u6f0f\u308c\u308b\u91cf\u5b50\u72b6\u614b\u304c\u3001\u3069\u308c\u3060\u3051\u533a\u5225\u3057\u306b\u304f\u3044\u304b\u3092\u8868\u3059\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u03b3\u3092\u4f7f\u3044\u307e\u3059\u3002\u03b3\u306f0\u304b\u30891\u306e\u7bc4\u56f2\u3067\u30011\u306a\u3089\u3001\u9375\u306b\u4f7f\u3046\u4e8c\u7a2e\u985e\u306e\u5358\u72ec\u691c\u51fa\u306b\u5bfe\u5fdc\u3059\u308b\u6f0f\u308c\u72b6\u614b\u304c\u540c\u3058\u3067\u3059\u3002\u3053\u308c\u306f\u6f0f\u308c\u305f\u30d3\u30c3\u30c8\u306e\u5272\u5408\u3092\u76f4\u63a5\u8868\u3059\u6570\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u60c5\u5831\u6f0f\u308c\u306b\u3088\u308b\u4f4d\u76f8\u8aa4\u308a\u7387\u306e\u8ffd\u52a0\u9805\u306f\u3001\u6697\u8a08\u6570\u3092\u4fdd\u5b88\u7684\u306b\u6271\u3046\u5834\u5408\u3001(1\u2212\u03b3)\/2\u3067\u4e0a\u304b\u3089\u6291\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u9805\u306b\u306f\u901a\u4fe1\u8def\u306e\u900f\u904e\u7387\u304c\u5165\u3089\u305a\u3001\u901a\u4fe1\u8def\u306e\u640d\u5931\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3082\u3001\u3053\u306e\u8ffd\u52a0\u9805\u81ea\u4f53\u306f\u5897\u5e45\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u5149\u304c\u9060\u304f\u307e\u3067\u5c4a\u304d\u306b\u304f\u304f\u306a\u308c\u3070\u3001\u5229\u7528\u3067\u304d\u308b\u691c\u51fa\u306f\u6e1b\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5e72\u6e09\u8a08\u306e\u30d3\u30fc\u30e0\u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\u304c\u534a\u5206\u305a\u3064\u306b\u5149\u3092\u5206\u3051\u306a\u3044\u3068\u3001\u5e72\u6e09\u306e\u898b\u3048\u65b9\u304c\u60aa\u5316\u3057\u3001\u8aa4\u308a\u8a02\u6b63\u3084\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u5897\u5f37\u306b\u4f7f\u3046\u4f59\u88d5\u3082\u6e1b\u308a\u307e\u3059\u3002\u300c\u6f0f\u308c\u306e\u8ffd\u52a0\u9805\u304c\u640d\u5931\u306b\u4f9d\u5b58\u3057\u306a\u3044\u300d\u3053\u3068\u306f\u3001\u300c\u9375\u751f\u6210\u7387\u3084\u8ddd\u96e2\u304c\u640d\u5931\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u300d\u3053\u3068\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8ad6\u6587\u306e\u6570\u5024\u4f8b\u3067\u306f\u3001\u5358\u72ec\u691c\u51fa\u306b\u5bfe\u5fdc\u3059\u308b\u6f0f\u308c\u72b6\u614b\u3092\u540c\u3058\u3068\u3057\u305f\u03b3\uff1d1\u304b\u3089\u3001\u3088\u308a\u533a\u5225\u3057\u3084\u3059\u3044\u03b3\uff1d1\/\u221a2\u3078\u5909\u3048\u308b\u3068\u3001\u6b21\u306e\u5dee\u304c\u751f\u3058\u307e\u3057\u305f\u3002\u8ddd\u96e2\u306f\u3001\u8a08\u7b97\u3057\u305f\u79d8\u5bc6\u9375\u751f\u6210\u7387\u306e\u4e0b\u9650\u304c\u6b63\u3067\u3042\u308b\u7bc4\u56f2\u306e\u7aef\u3067\u3059\u3002<\/p>\n<div class=\"qs-table-scroll\" role=\"region\" aria-label=\"\u900f\u904e\u7387\u3068\u6f0f\u308c\u6761\u4ef6\u3054\u3068\u306e\u9650\u754c\u8ddd\u96e2\u6bd4\u8f03\u3002\u6a2a\u306b\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059\" tabindex=\"0\" style=\"overflow-x:auto\">\n<table style=\"min-width:650px\">\n<thead>\n<tr>\n<th scope=\"col\">\u5165\u53e3\u30fb\u51fa\u53e3\u306e\u30d3\u30fc\u30e0\u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\u900f\u904e\u7387<\/th>\n<th scope=\"col\">\u03b3\uff1d1\u3067\u306e\u9650\u754c\u8ddd\u96e2<\/th>\n<th scope=\"col\">\u03b3\uff1d1\/\u221a2\u3067\u306e\u9650\u754c\u8ddd\u96e2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">\u5165\u53e30.5\u3001\u51fa\u53e30.5<\/th>\n<td>\u7d04290km<\/td>\n<td>\u7d04277km<\/td>\n<\/tr>\n<tr>\n<th 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Mizusawa, \u00c1lvaro Navarrete, Akihiro Mizutani, Kiyoshi Tamaki, \u201cDecoy-state quantum key distribution with a leaky Mach\u2013Zehnder receiver,\u201d arXiv:2611.04539v1\u30012026\u5e7411\u67083\u65e5\u516c\u958b\u3002\u672c\u6587\u7b2cI\u2013VI\u7bc0\u3001\u4eee\u5b9aA1\u2013A4\u3001\u5f0f21\u30fb25\u30fb34\u3001\u56f31\u20134\u3001\u4ed8\u9332D\u3002\u67fb\u8aad\u524d\u30d7\u30ec\u30d7\u30ea\u30f3\u30c8\u3002<a href=\"https:\/\/arxiv.org\/abs\/2611.04539v1\">\u8ad6\u6587\u30da\u30fc\u30b8<\/a>\u30fb<a href=\"https:\/\/arxiv.org\/pdf\/2611.04539v1\">PDF<\/a>\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u91cf\u5b50\u9375\u914d\u9001\u306f\u3001\u96e2\u308c\u305f\u4e8c\u4eba\u304c\u79d8\u5bc6\u306e\u9375\u3092\u5171\u6709\u3059\u308b\u305f\u3081\u306e\u6280\u8853\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u5149\u3092\u4f7f\u3063\u305f\u901a\u4fe1\u8def\u3060\u3051\u3092\u8003\u3048\u308c\u3070\u5b89\u5168\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5149\u3092\u53d7\u3051\u53d6\u308b\u691c\u51fa\u5668\u304b\u3089\u3001\u3069\u306e\u691c\u51fa\u304c\u8d77\u304d\u305f\u304b\u3092\u63a8\u6e2c\u3067\u304d\u308b\u60c5\u5831\u304c\u5916\u3078\u6f0f\u308c\u308b\u5834\u5408\u3082\u3001\u8a55\u4fa1\u306b\u542b\u3081\u308b\u5fc5 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