メーリングリストの皆様
東京大学生産技術研究所の李と申します。
羽田野研究室では、下記の通りセミナーを開催致します。
皆様の奮ってのご参加をお待ちしております。
なお、当研究室におけるセミナー情報は、次のリンクよりご覧頂けます。
hatano-lab.iis.u-tokyo.ac.jp/seminar.html
＊本案内は複数のメーリングリストにお送りしております。重複して受け取られました方は何卒ご容赦下さい。
記
日時：２０１９年０３月０４日（月）１３時３０分〜
場所：東京大学 生産技術研究所 千葉実験所 研究実験棟Ｉn210号室
道程：http://hatano-lab.iis.u-tokyo.ac.jp/access.html
講師：松崎雄一郎さん（産総研）
演題：Quantum remote sensing with asymmetric information gain
要旨：
The standard aim of quantum sensing is to improve the sensitivity with quantum properties [1]. Here, we will introduce a novel quantum sensing scheme with a security inbuild, which exploits an entanglement as a resource [2]. We adopt a client-server model. The client needs to measure target fields from a sample, but he/she does not have a sensitive field sensor. The client delegates the sensing task to a remote server with a high-precision sensor. The sample is sent from the client to the server, and the server is assumed to be honest to the client while the server has the sample. The server interacts the sensor with the sample, and sends the information to the client, as the client suggests. In this case, the sensor stores every measurement data, and the information of the target fields is available both for the client side and the server side. This could cause a problem if the sensor is stolen by Eavedropper. Since the classical data in the sensor is not erasable, the infor
mation could be leaked to the Eavesdropper that could analyze the sensor. To overcome the problem, our proposed scheme provides an asymmetric information gain where the amount of achievable information at the client side can be much larger than that of the server side, which guarantees the security even if the sensor of the server is stolen. The server generates an entanglement between a quantum sensor and a flying photon, and the client will measure the photon by using the standard linear optics elements. Our scheme is feasible in the current technology.
参考文献
[1] C. L. Degen et al., Rev. Mod. Phys. 89, 035002 (2017).
[2] Y. Takeuchi*, Y. Matsuzaki* et al., arXiv:1811.05586 (2018). *Equally contributed.
———————————————–
李 宰河
〒277-8574 千葉県柏市柏の葉5-1-5
東京大学生産技術研究所
e-mail: lee@iis.u-tokyo.ac.jp
Tel: 04-7136-6977
Fax: 04-7136-6978
———————————————–
————————————————-
Computational Material Physics Mailing List
home: www.issp.u-tokyo.ac.jp/public/cmp/
archive: cmp-ml.issp.u-tokyo.ac.jp
twitter: https://twitter.com/cmp_ml
————————————————-