{"created":"2023-05-15T14:57:40.650613+00:00","id":78280,"links":{},"metadata":{"_buckets":{"deposit":"b7e7f1dd-b121-4c0e-b953-f6d36d2b479e"},"_deposit":{"created_by":1,"id":"78280","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"78280"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00078280","sets":["10:28"]},"author_link":["825181","825183","825180","825187","825188","825182","825189","825191","825190","825184","825186","825185"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2019-12-17","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"NV centers in diamond has been considered as an important building block for the realization of quantum information processing　such as quantum simulation, and quantum metrology. Importantly, NV centers suffer from decoherence, which is an obstacle for　more practical applications. There are many ways to suppress decoherence, such as the quantum Zeno effect, dynamical　decoupling. However, the efficiency of these protocols strongly depends on the noise properties. So it is essential to understand　how the nitrogen concentration affects decoherence, which will let us determine a strategy to improve the coherence time.　Here, we report experimental and theoretical investigation of Hahn echo decay curves for NV centers in several diamond samples　with different spin concentrations (the sum of NV and P1 concentration). Our experimental results show that an exponential　decay curve is observed for a high nitrogen concentration and a non-exponential decay curve is observed for a low nitrogen　concentration. Our analysis also shows that the correlation time and amplitude of the dipole interaction from the environmental spin　bath have a linear dependence on the spin concentration.","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"The 2nd International Forum on Quantum Metrology and Sensing (IFQMS)","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hayashi, K."}],"nameIdentifiers":[{"nameIdentifier":"825180","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Matsuzaki, Y."}],"nameIdentifiers":[{"nameIdentifier":"825181","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ashida, T."}],"nameIdentifiers":[{"nameIdentifier":"825182","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Onoda, Shinobu"}],"nameIdentifiers":[{"nameIdentifier":"825183","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Abe, Hiroshi"}],"nameIdentifiers":[{"nameIdentifier":"825184","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohshima, Takeshi"}],"nameIdentifiers":[{"nameIdentifier":"825185","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hatano, M."}],"nameIdentifiers":[{"nameIdentifier":"825186","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Taniguchi, T."}],"nameIdentifiers":[{"nameIdentifier":"825187","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Mizuochi, N."}],"nameIdentifiers":[{"nameIdentifier":"825188","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Onoda, Shinobu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"825189","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Abe, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"825190","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohshima, Takeshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"825191","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Experimental analysis of noise strength and environmental correlation time of ensembles of nitrogen vacancy centers in diamond","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Experimental analysis of noise strength and environmental correlation time of ensembles of nitrogen vacancy centers in diamond"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-12-28"},"publish_date":"2019-12-28","publish_status":"0","recid":"78280","relation_version_is_last":true,"title":["Experimental analysis of noise strength and environmental correlation time of ensembles of nitrogen vacancy centers in diamond"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:11:52.611528+00:00"}