{"id":2410,"date":"2026-11-08T04:00:00","date_gmt":"2026-11-07T19:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=2410"},"modified":"2026-11-06T03:36:44","modified_gmt":"2026-11-05T18:36:44","slug":"qs-linear-coupling-gate-speed-20261106","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=2410","title":{"rendered":"\u91cf\u5b50\u30b2\u30fc\u30c8\u306e\u901f\u5ea6\u3068\u7dda\u5f62\u7d50\u5408\u3001\u30d1\u30eb\u30b9\u306e\u5de5\u592b\u3067\u5909\u308f\u308b\u3082\u306e\u30fb\u5909\u308f\u3089\u306a\u3044\u3082\u306e"},"content":{"rendered":"<p>\u91cf\u5b50\u30d3\u30c3\u30c8\u3092\u52d5\u304b\u3059\u30d1\u30eb\u30b9\u3092\u5f37\u304f\u3059\u308c\u3070\u3001\u77ed\u3044\u6642\u9593\u3067\u64cd\u4f5c\u3067\u304d\u305d\u3046\u3067\u3059\u3002\u3067\u306f\u3001\u30d1\u30eb\u30b9\u306e\u91cf\u5b50\u7684\u306a\u63fa\u3089\u304e\u307e\u3067\u5de5\u592b\u3059\u308c\u3070\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5897\u3084\u3057\u305f\u3068\u304d\u306e\u901f\u5ea6\u306e\u4f38\u3073\u65b9\u3082\u5909\u3048\u3089\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>ETH Zurich\u306ePablo Restrepo Gaviria\u6c0f\u3068\u3001ENS de Lyon\u30fbInria\u306eMischa P. Woods\u6c0f\u306f\u3001\u5236\u5fa1\u3059\u308b\u5834\u3068\u91cf\u5b50\u7cfb\u304c<strong>\u7dda\u5f62\u7d50\u5408<\/strong>\u3059\u308b\u30e2\u30c7\u30eb\u306b\u3064\u3044\u3066\u3001\u3053\u306e\u554f\u3044\u3092\u8abf\u3079\u3066\u3044\u307e\u3059\u30022026\u5e749\u6708\u306b\u516c\u958b\u3057\u300111\u67083\u65e5\u306b\u6539\u8a02\u3057\u305f\u30d7\u30ec\u30d7\u30ea\u30f3\u30c8\u3067\u306f\u3001\u4e00\u5b9a\u306e\u6761\u4ef6\u306e\u3082\u3068\u3067\u3001\u64cd\u4f5c\u901f\u5ea6\u306e\u4e0a\u9650\u304c\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u5e73\u65b9\u6839\u306b\u6bd4\u4f8b\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3057\u305f\u3002\u30d1\u30eb\u30b9\u306e\u5de5\u592b\u306b\u3088\u308b\u6539\u5584\u3068\u3001\u3053\u306e\u300c\u5897\u3048\u65b9\u306e\u5236\u7d04\u300d\u306f\u5206\u3051\u3066\u8aad\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\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>\u7dda\u5f62\u7d50\u5408\u3067\u306f\u3001\u30cf\u30df\u30eb\u30c8\u30cb\u30a2\u30f3\u306a\u3069\u306e\u6761\u4ef6\u3092\u56fa\u5b9a\u3059\u308b\u3068\u3001\u4e00\u5b9a\u306e\u72b6\u614b\u5909\u5316\u3092\u8d77\u3053\u3059\u901f\u5ea6\u306b<strong>\u221aE\u578b\u306e\u4e0a\u9650<\/strong>\u304c\u4ed8\u304d\u307e\u3059\u3002\u5b9f\u969b\u306e\u901f\u5ea6\u304c\u5fc5\u305a\u305d\u306e\u5024\u306b\u306a\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u30b9\u30af\u30a4\u30fc\u30b8\u30f3\u30b0\u306a\u3069\u3001\u5236\u5fa1\u5834\u3092\u91cf\u5b50\u7684\u306b\u5de5\u592b\u3059\u308b\u52b9\u679c\u3092\u6392\u9664\u3057\u305f\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u540c\u3058\u30a8\u30cd\u30eb\u30ae\u30fc\u3067\u306e\u6539\u5584\u306f\u3042\u3063\u3066\u3082\u3001\u4e0a\u9650\u306e\u6307\u6570\u3092\u5909\u3048\u3089\u308c\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u533a\u5225\u3067\u3059\u3002<\/li>\n<li>\u7d50\u5408\u3084\u88c5\u7f6e\u306e\u6761\u4ef6\u3092\u5909\u3048\u3066\u6bd4\u3079\u308b\u5834\u5408\u306b\u306f\u3001\u5171\u901a\u306e\u6642\u9593\u57fa\u6e96\u3084\u8ffd\u52a0\u306e\u6761\u4ef6\u304c\u5fc5\u8981\u3067\u3059\u3002\u6570\u5024\u8a08\u7b97\u306f\u4e00\u3064\u306e\u72b6\u614b\u79fb\u884c\u3092\u8abf\u3079\u305f\u3082\u306e\u3067\u3001\u5b9f\u6a5f\u306e\u30b2\u30fc\u30c8\u5fe0\u5b9f\u5ea6\u3092\u6e2c\u3063\u305f\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u7dda\u5f62\u7d50\u5408\u306f\u3001\u4f55\u304c\u7dda\u5f62\u306a\u306e\u304b<\/h2>\n<p>\u3053\u306e\u7814\u7a76\u306f\u3001\u6709\u9650\u500b\u306e\u6e96\u4f4d\u3092\u6301\u3064\u91cf\u5b50\u7cfb\u3068\u3001\u5149\u3084\u30de\u30a4\u30af\u30ed\u6ce2\u3092\u8868\u3059\u30dc\u30bd\u30f3\u5834\u3092\u307e\u3068\u3081\u3066\u6271\u3044\u307e\u3059\u3002\u5834\u3092\u5916\u304b\u3089\u4e0e\u3048\u305f\u56fa\u5b9a\u306e\u6ce2\u5f62\u3068\u3057\u3066\u6e08\u307e\u305b\u305a\u3001\u91cf\u5b50\u7cfb\u3068\u306e\u9593\u3067\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u3084\u308a\u53d6\u308a\u3057\u3001\u76f8\u95a2\u304c\u751f\u3058\u308b\u904e\u7a0b\u3082\u542b\u3081\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u3044\u3046\u7dda\u5f62\u7d50\u5408\u306f\u3001\u76f8\u4e92\u4f5c\u7528\u304c<strong>\u5834\u306e\u751f\u6210\u30fb\u6d88\u6ec5\u6f14\u7b97\u5b50\u306b\u4e00\u6b21<\/strong>\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002\u5e73\u305f\u304f\u3044\u3048\u3070\u3001\u5834\u306e\u91cf\u5b50\u3092\u4e00\u3064\u5897\u6e1b\u3059\u308b\u50cd\u304d\u304c\u3001\u91cf\u5b50\u7cfb\u306e\u64cd\u4f5c\u3068\u7d50\u3073\u4ed8\u304f\u5f62\u3067\u3059\u3002\u300c\u30d1\u30eb\u30b9\u306e\u96fb\u529b\u30922\u500d\u306b\u3059\u308b\u3068\u901f\u5ea6\u30822\u500d\u306b\u306a\u308b\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5236\u5fa1\u5834\u306e\u72b6\u614b\u306b\u306f\u3001\u6df7\u5408\u72b6\u614b\u3084\u30b9\u30af\u30a4\u30fc\u30ba\u30c9\u72b6\u614b\u3001\u975e\u30ac\u30a6\u30b9\u72b6\u614b\u3082\u542b\u3081\u3089\u308c\u307e\u3059\u3002\u5834\u3068\u91cf\u5b50\u7cfb\u306e\u76f8\u95a2\u3082\u8a31\u3057\u305f\u3046\u3048\u3067\u3001\u7d50\u5408\u306e\u6027\u8cea\u304b\u3089\u3069\u3053\u307e\u3067\u901f\u304f\u52d5\u3051\u308b\u304b\u3092\u554f\u3046\u70b9\u304c\u3001\u3053\u306e\u7d50\u679c\u306e\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<h2>\u4e0a\u9650\u306f\u5e73\u65b9\u6839\u3067\u5897\u3048\u308b\u3002\u5b9f\u969b\u306e\u901f\u5ea6\u3068\u306f\u5225\u306e\u91cf<\/h2>\n<p>\u540c\u3058\u30cf\u30df\u30eb\u30c8\u30cb\u30a2\u30f3\u3001\u3064\u307e\u308a\u540c\u3058\u7cfb\u30fb\u5834\u30fb\u76f8\u4e92\u4f5c\u7528\u306e\u6cd5\u5247\u3092\u4f7f\u3046\u5834\u5408\u3001\u8ad6\u6587\u306e\u5b9a\u74068\u306f\u3001\u64cd\u4f5c\u901f\u5ea6\u03c9<sub>gate<\/sub>\u306b\u6b21\u306e\u4e0a\u9650\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<p><strong>\u03c9<sub>gate<\/sub> \u2264 (4\u03c0 \/ D) \u221a(C<sub>g<\/sub>C<sub>fld<\/sub>E)<\/strong><\/p>\n<p>D\u306f\u3001\u64cd\u4f5c\u306e\u59cb\u3081\u3068\u7d42\u308f\u308a\u306e\u91cf\u5b50\u72b6\u614b\u304c\u3069\u308c\u3060\u3051\u9055\u3046\u304b\u3092\u8868\u3059\u30c8\u30ec\u30fc\u30b9\u8ddd\u96e2\u3067\u3059\u3002C<sub>g<\/sub>\u306f\u5834\u306e\u5404\u5468\u6ce2\u6570\u3068\u306e\u7d50\u5408\u304b\u3089\u6c7a\u307e\u308b\u6709\u9650\u306e\u91cf\u3001C<sub>fld<\/sub>\u306f\u64cd\u4f5c\u4e2d\u306e\u5834\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u7dcf\u30a8\u30cd\u30eb\u30ae\u30fcE\u306e\u4f55\u500d\u307e\u3067\u3068\u3059\u308b\u304b\u306e\u5171\u901a\u306e\u4e0a\u9650\u3067\u3059\u3002\u3053\u308c\u3089\u3092\u56fa\u5b9a\u3059\u308c\u3070\u3001\u53f3\u8fba\u306f\u221aE\u3067\u5897\u3048\u307e\u3059\u3002<\/p>\n<p>\u901f\u5ea6\u306e\u5b9a\u7fa9\u306f\u3001\u64cd\u4f5c\u6642\u9593\u0394t\u306b\u5bfe\u3057\u3066\u03c9<sub>gate<\/sub> = 2\u03c0\/\u0394t\u3067\u3059\u3002\u307e\u305f\u3001\u72b6\u614b\u306e\u9055\u3044\u306f\u3001\u91cf\u5b50\u7cfb\u3060\u3051\u306e\u81ea\u7531\u306a\u6642\u9593\u767a\u5c55\u3092\u53d6\u308a\u9664\u3044\u305f<strong>\u76f8\u4e92\u4f5c\u7528\u63cf\u50cf<\/strong>\u3067\u6e2c\u308a\u307e\u3059\u3002\u4f55\u3082\u5236\u5fa1\u3057\u306a\u304f\u3066\u3082\u8d77\u3053\u308b\u52d5\u304d\u3092\u3001\u305d\u306e\u307e\u307e\u64cd\u4f5c\u306e\u901f\u3055\u3068\u3057\u3066\u6570\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-linear-coupling-gate-speed-20261106-figure3-123aabc5b26d.png\"><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-linear-coupling-gate-speed-20261106-figure3-123aabc5b26d.png\" alt=\"\u540c\u3058\u4fc2\u6570K\u306b\u5bfe\u3059\u308b\u4e0a\u9650K\u221aE\u306e\u6bd4\u8f03\u3002\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u57fa\u6e96\u306e1\u30014\u30019\u300116\u500d\u3068\u3059\u308b\u3068\u3001\u4e0a\u9650\u306f1\u30012\u30013\u30014\u500d\u306b\u306a\u308b\u3002\u5b9f\u969b\u306e\u30b2\u30fc\u30c8\u901f\u5ea6\u3084\u9054\u6210\u53ef\u80fd\u6027\u3092\u793a\u3059\u56f3\u3067\u306f\u306a\u3044\u3002\" style=\"max-width:100%;height:auto\" \/><\/a><figcaption>\u5b9a\u74068\u306e\u221aE\u4f9d\u5b58\u3060\u3051\u3092\u53d6\u308a\u51fa\u3057\u305f\u6bd4\u8f03\u3002Quantum 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style=\"min-width:650px;\">\n<thead>\n<tr>\n<th>\u6bd4\u3079\u305f\u3044\u5909\u66f4<\/th>\n<th>\u4eca\u56de\u306e\u7d50\u679c\u304b\u3089\u8aad\u3081\u308b\u3053\u3068<\/th>\n<th>\u8ffd\u52a0\u3067\u78ba\u304b\u3081\u308b\u3053\u3068<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u540c\u3058\u7cfb\u3067\u30d1\u30eb\u30b9\u306e\u91cf\u5b50\u72b6\u614b\u3092\u5909\u3048\u308b<\/td>\n<td>\u6761\u4ef6\u3092\u56fa\u5b9a\u3057\u305f\u221aE\u578b\u306e\u4e0a\u9650\u306f\u6b8b\u308b<\/td>\n<td>\u6e96\u5099\u306b\u8981\u3059\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u542b\u3081\u305f\u5b9f\u969b\u306e\u6539\u5584\u5e45<\/td>\n<\/tr>\n<tr>\n<td>\u7d50\u5408\u3084\u5206\u6563\u95a2\u4fc2\u3082\u5909\u3048\u308b<\/td>\n<td>\u5171\u901a\u6761\u4ef6\u3092\u4fdd\u3064\u30e2\u30c7\u30eb\u7fa4\u306b\u306f\u7121\u6b21\u5143\u306e\u4e0a\u9650\u304c\u4ed8\u304f<\/td>\n<td>\u57fa\u6e96\u6642\u9593\u3001\u72b6\u614b\u5909\u5316\u91cf\u3001\u5834\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u306a\u3069\u306e\u4e00\u69d8\u6027<\/td>\n<\/tr>\n<tr>\n<td>\u7dda\u5f62\u7d50\u5408\u306e\u5916\u3078\u8a2d\u8a08\u3092\u5e83\u3052\u308b<\/td>\n<td>\u3053\u306e\u5b9a\u7406\u306e\u5bfe\u8c61\u7bc4\u56f2\u3092\u8d8a\u3048\u308b<\/td>\n<td>\u901f\u3055\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u88c5\u53ef\u80fd\u6027\u3084\u6f14\u7b97\u306e\u5fe0\u5b9f\u5ea6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u3053\u306e\u7814\u7a76\u306f\u3001\u30d1\u30eb\u30b9\u306e\u5de5\u592b\u3092\u3084\u3081\u308b\u7406\u7531\u3067\u306f\u306a\u304f\u3001\u4f55\u3092\u5909\u3048\u308c\u3070\u3069\u306e\u7a2e\u985e\u306e\u6539\u5584\u3092\u671f\u5f85\u3067\u304d\u308b\u304b\u3092\u6574\u7406\u3059\u308b\u624b\u639b\u304b\u308a\u306b\u306a\u308a\u307e\u3059\u3002\u73fe\u6bb5\u968e\u306e\u6839\u62e0\u306f\u30d7\u30ec\u30d7\u30ea\u30f3\u30c8\u306e\u5b9a\u7406\u3068\u6570\u5024\u8a08\u7b97\u3067\u3059\u3002\u7279\u5b9a\u306e\u5b9f\u6a5f\u3067\u4f55\u30ca\u30ce\u79d2\u306e\u30b2\u30fc\u30c8\u304c\u53ef\u80fd\u306b\u306a\u308b\u304b\u3001\u3042\u308b\u3044\u306f\u8aa4\u308a\u7387\u304c\u3069\u308c\u3060\u3051\u4e0b\u304c\u308b\u304b\u3092\u76f4\u63a5\u793a\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ul>\n<li>Pablo Restrepo Gaviria and Mischa P. Woods, <a href=\"https:\/\/arxiv.org\/abs\/2609.19280v2\">A Square-Root Barrier to Quantum Gate Speed under Linear Coupling<\/a>, arXiv:2609.19280v2\u3002\u521d\u72482026\u5e749\u670816\u65e5\u3001\u6539\u8a02\u724811\u67083\u65e5\u3002\u672c\u6587\u3068\u88dc\u8db3\u8cc7\u6599\u306e\u5b9a\u74068\u301c10\u3001\u6570\u5024\u8a08\u7b97\u306e\u7bc0\u3001\u56f31\u301c5\u3092\u53c2\u7167\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u91cf\u5b50\u30d3\u30c3\u30c8\u3092\u52d5\u304b\u3059\u30d1\u30eb\u30b9\u3092\u5f37\u304f\u3059\u308c\u3070\u3001\u77ed\u3044\u6642\u9593\u3067\u64cd\u4f5c\u3067\u304d\u305d\u3046\u3067\u3059\u3002\u3067\u306f\u3001\u30d1\u30eb\u30b9\u306e\u91cf\u5b50\u7684\u306a\u63fa\u3089\u304e\u307e\u3067\u5de5\u592b\u3059\u308c\u3070\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5897\u3084\u3057\u305f\u3068\u304d\u306e\u901f\u5ea6\u306e\u4f38\u3073\u65b9\u3082\u5909\u3048\u3089\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002 ETH Zurich\u306ePablo Restr [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2408,"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":[481],"class_list":["post-2410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computing","tag-quantum-gate-speed"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/11\/qs-linear-coupling-gate-speed-20261106-d56d6bd2d248.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2410","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=2410"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2410\/revisions"}],"predecessor-version":[{"id":2414,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/2410\/revisions\/2414"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/2408"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}