\u5f53\u7814\u7a76\u5ba4\u3067\u306f\u3001\u91d1\u878d\u30fb\u5316\u5b66\u30fb\u6a5f\u68b0\u5b66\u7fd2\u3068\u3044\u3063\u305f\u69d8\u3005\u306a\u5206\u91ce\u3078\u306e\u5fdc\u7528\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u308b\u3001\u6b21\u4e16\u4ee3\u306e\u8a08\u7b97\u6a5f\u300c\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u300d\u306e\u6027\u8cea\u3092\u660e\u3089\u304b\u306b\u3057\u3001\u5fdc\u7528\u3078\u3068\u3064\u306a\u3052\u3066\u3044\u304f\u305f\u3081\u306e\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u5c71\u672c\u76f4\u6a39\u304c\u30bb\u30f3\u30bf\u30fc\u9577\u3092\u52d9\u3081\u308b\u3001\u6176\u61c9\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30bb\u30f3\u30bf\u30fc<\/a>\u3068\u5bc6\u306b\u9023\u643a\u3057\u306a\u304c\u3089\u3001\u7269\u7406\u5b66\u30fb\u60c5\u5831\u5b66\u306e\u7406\u8ad6\u7684\u9053\u5177\u3068\u3001\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u5b9f\u6a5f\u3092\u99c6\u4f7f\u3057\u3066\u3001\u7814\u7a76\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n In our research laboratory, we are conducting studies to elucidate the properties of the next-generation computer, “quantum computer,” which is expected to be applied in various fields such as finance, chemistry, and machine learning. The aim is to reveal its characteristics and advance research to connect them to practical applications. Collaborating closely with the Keio Quantum Computing Center<\/a>, led by Professor Naoki Yamamoto, we employ theoretical tools from physics and information science, along with actual quantum computers, to progress our research.<\/p>\n\n\n\n \u7d71\u8a08\u7684\u63a8\u5b9a\u7406\u8ad6\u306b\u57fa\u3065\u304f\u91cf\u5b50\u8a08\u7b97<\/strong>\uff1a\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u7d50\u679c\u306f\u3001\u91cf\u5b50\u72b6\u614b\u306e\u632f\u5e45\u3084\u4f4d\u76f8\u306b\u57cb\u3081\u8fbc\u307e\u308c\u307e\u3059\u3002\u3053\u308c\u3092\u52b9\u7387\u3088\u304f\u6b63\u78ba\u306b\u53d6\u308a\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u76ee\u7684\u306e\u305f\u3081\u306b\u3001\u7d71\u8a08\u7684\u63a8\u5b9a\u7406\u8ad6\u304c\u5f79\u306b\u7acb\u3061\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5143\u306e(\u9577\u3044)\u91cf\u5b50\u56de\u8def\u3092\u8907\u6570\u306e\u77ed\u3044\u91cf\u5b50\u56de\u8def\u306b\u5206\u5272\u3057\u3001\u305d\u308c\u3089\u306e\u51fa\u529b\u3092\u7d71\u5408\u30fb\u7d71\u8a08\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u306b\u304a\u3044\u3066\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n Quantum Computing Based on Statistical Estimation Theory:<\/strong> Quantum computing results are embedded in the amplitudes and phases of quantum states. Efficient and accurate extraction of this information is essential. For this purpose, statistical estimation theory proves valuable. For instance, it is useful in dividing the original (long) quantum circuit into multiple shorter circuits and integrating and statistically processing their outputs.<\/p>\n\n\n\n <\/p>\n\n\n\n \u91cf\u5b50\u30ea\u30b6\u30d0\u30fc\u8a08\u7b97<\/strong>\uff1a\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a08\u7b97\u51e6\u7406\u904e\u7a0b\u306f\u3001\u91cf\u5b50\u529b\u5b66\u7cfb\u304c\u5f93\u3046\u5b9f\u30c0\u30a4\u30ca\u30df\u30af\u30b9\u306b\u4ed6\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u306b\u57fa\u3065\u304d\u3001\u91cf\u5b50\u7cfb\u306e\u30ea\u30c3\u30c1\u306a\u30c0\u30a4\u30ca\u30df\u30af\u30b9\u3092\u8a08\u7b97\u8cc7\u6e90\u3068\u3057\u3066\u5229\u7528\u3059\u308b\u91cf\u5b50\u30ea\u30b6\u30d0\u30fc\u8a08\u7b97\u306e\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u3068\u304f\u306b\u3001\u30ce\u30a4\u30ba\u3055\u3048\u3082\u8a08\u7b97\u8cc7\u6e90\u3068\u3057\u3066\u6d3b\u7528\u3059\u308b\u81ea\u7136\u30ea\u30b6\u30d0\u30fc\u306e\u6027\u80fd\u3092\u8abf\u3079\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n Quantum Reservoir Computing:<\/strong> The computational process of a quantum computer follows the real dynamics of a quantum mechanical system. Based on this concept, we are conducting research on quantum reservoir computing, utilizing the rich dynamics of quantum systems as computational resources. In particular, we are exploring the performance of natural reservoirs that leverage noise as a computational resource.<\/p>\n\n\n\n <\/p>\n\n\n\n \u5909\u5206\u91cf\u5b50\u56de\u8def\u306e\u57fa\u790e\u3068\u5fdc\u7528<\/strong>\uff1a\u91cf\u5b50\u56de\u8def\u306b\u8abf\u6574\u53ef\u80fd\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3082\u305f\u305b\u3001\u671b\u307e\u3057\u3044\u8a08\u7b97\u7d50\u679c\u3092\u51fa\u529b\u3059\u308b\u3088\u3046\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8abf\u6574(\u5b66\u7fd2)\u3059\u308b\u3001\u3068\u3044\u3046\u4f5c\u6226\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u6a5f\u68b0\u5b66\u7fd2\u306b\u304a\u3044\u3066\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4f7f\u3046\u306e\u3068\u540c\u3058\u767a\u60f3\u3067\u3059\u3002\u56de\u8def\u69cb\u9020\u306e\u30c7\u30b6\u30a4\u30f3\u3001\u30b3\u30b9\u30c8\u95a2\u6570\u306e\u8a2d\u5b9a\u3001\u5b66\u7fd2\u6cd5\u306e\u9078\u5b9a\u306a\u3069\u3001\u8ab2\u984c\u304c\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n Variational Quantum Circuit:<\/strong> This involves equipping a quantum circuit with adjustable parameters and adjusting (learning) these parameters to produce the desired computational results. This strategy is analogous to using neural networks in machine learning. Challenges include designing circuit structures, defining cost functions, and selecting learning methods.<\/p>\n\n\n\n <\/p>\n\n\n\n \u91cf\u5b50\u5236\u5fa1\u3068\u3057\u3066\u306e\u91cf\u5b50\u8a08\u7b97<\/strong>\uff1a\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u6f14\u7b97\u306f\u7269\u7406\u30d1\u30eb\u30b9\u306e\u7167\u5c04\u3067\u5b9f\u88c5\u3055\u308c\u307e\u3059\u3002\u3086\u3048\u306b\u3001\u91cf\u5b50\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u8a2d\u8a08\u306f\u3001\u6240\u671b\u306e\u72b6\u614b\u9077\u79fb\u3092\u5f15\u304d\u8d77\u3053\u3059\u305f\u3081\u306e\u7269\u7406\u30d1\u30eb\u30b9\u306e\u8a2d\u8a08\u3068\u3044\u3046\u5236\u5fa1\u554f\u984c\u3068\u3057\u3066\u5b9a\u5f0f\u5316\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u3088\u308a\u3001\u5f93\u6765\u3088\u308a\u77ed\u3044\u30d1\u30eb\u30b9\u7167\u5c04\u6642\u9593\u3067\u6240\u671b\u306e\u7cbe\u5ea6\u3092\u6709\u3059\u308b\u6f14\u7b97\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n Quantum Computing as Quantum Control:<\/strong> Quantum computer operations are implemented by irradiating physical pulses. Therefore, designing quantum algorithms can be formulated as a control problem for designing physical pulses to induce the desired state transitions. This approach enables the realization of operations with the desired accuracy in shorter pulse irradiation times than conventional methods.<\/p>\n","protected":false},"excerpt":{"rendered":" Our Laboratory \u5f53\u7814\u7a76\u5ba4\u3067\u306f\u3001\u91d1\u878d\u30fb\u5316\u5b66\u30fb\u6a5f\u68b0\u5b66\u7fd2\u3068\u3044\u3063\u305f\u69d8\u3005\u306a\u5206\u91ce\u3078\u306e\u5fdc\u7528\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u308b\u3001\u6b21\u4e16\u4ee3\u306e\u8a08\u7b97\u6a5f\u300c\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u300d\u306e\u6027\u8cea\u3092\u660e\u3089\u304b\u306b\u3057\u3001\u5fdc\u7528\u3078\u3068\u3064\u306a\u3052\u3066\u3044\u304f\u305f\u3081\u306e\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u5c71\u672c\u76f4\u6a39\u304c\u30bb\u30f3\u30bf\u30fc\u9577\u3092\u52d9\u3081\u308b\u3001\u6176\u61c9\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30bb\u30f3\u30bf\u30fc\u3068\u5bc6\u306b\u9023\u643a\u3057\u306a\u304c\u3089\u3001\u7269\u7406\u5b66\u30fb\u60c5\u5831\u5b66\u306e\u7406\u8ad6\u7684\u9053\u5177\u3068\u3001\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u5b9f\u6a5f\u3092\u99c6\u4f7f\u3057\u3066\u3001\u7814\u7a76\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002 In our research laboratory, we are conducting studies to elucidate the properties of the next-generation computer, “quantum computer,” which is expected to be applied in various fields such as finance, chemistry, and machine learning. The aim is to reveal its characteristics and advance research to connect them to practical applications. Collaborating closely … Continue reading “”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-21","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/pages\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/comments?post=21"}],"version-history":[{"count":16,"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/pages\/21\/revisions"}],"predecessor-version":[{"id":385,"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/pages\/21\/revisions\/385"}],"wp:attachment":[{"href":"https:\/\/www.yamamoto.appi.keio.ac.jp\/index.php\/wp-json\/wp\/v2\/media?parent=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Research Topics<\/h2>\n\n\n\n