{"id":172,"date":"2023-08-16T13:48:43","date_gmt":"2023-08-16T17:48:43","guid":{"rendered":"https:\/\/research.ece.ncsu.edu\/farfurnik\/?page_id=172"},"modified":"2023-08-16T14:18:22","modified_gmt":"2023-08-16T18:18:22","slug":"quantum-sensing","status":"publish","type":"page","link":"https:\/\/research.ece.ncsu.edu\/farfurnik\/research-2\/quantum-sensing\/","title":{"rendered":"Quantum Sensing"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>The energy levels of spin qubits can shift due to the presence of external physical forces and fields such as magnetic and electric fields, strain, and temperature. As such, optically-active spin qubits are widely used as sensors of external forces and fields produced in physical, biological, chemical, and geological specimens. We use lasers and microwave fields to measure optically-active spin qubits and perform such sensing. We are also interested in performing <em>quantum sensing<\/em>, namely utilizing highly entangled \u201cspin-squeezed\u201d states to develop sensors whose capabilities scale better than the ones of classical sensors.<\/p>\n\n\n\n<p><br>&nbsp;&nbsp;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"268\" src=\"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-content\/uploads\/sites\/34\/2023\/08\/Rock-1024x268.png\" alt=\"\" class=\"wp-image-188\" srcset=\"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-content\/uploads\/sites\/34\/2023\/08\/Rock-1024x268.png 1024w, https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-content\/uploads\/sites\/34\/2023\/08\/Rock-300x78.png 300w, https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-content\/uploads\/sites\/34\/2023\/08\/Rock-768x201.png 768w, https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-content\/uploads\/sites\/34\/2023\/08\/Rock.png 1281w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">In the figure: vectorial magnetic sensing of multi-domain dendrites in rock forming minerals utilizing ensembles of NV color centers in diamond.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Promising research directions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilizing optically-active spins as sensors to study physical, biological, chemical, and geological systems.<\/li>\n\n\n\n<li>Utilizing spin-squeezed states to demonstrate sensing beyond classical limits.<\/li>\n<\/ul>\n\n\n\n<p><strong>Related publications:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D. Farfurnik<\/strong>, A. Jarmola, D. Budker, and N. Bar-Gill. Spin ensemble-based AC magnetometry using concatenated dynamical decoupling at low temperatures. <a rel=\"noreferrer noopener\" href=\"http:\/\/iopscience.iop.org\/article\/10.1088\/2040-8986\/aaa1bf\/meta\" target=\"_blank\"><em>J. Opt. <\/em><strong>20<\/strong> 024008 (2018)<\/a>.<\/li>\n\n\n\n<li>E. Farchi, Y. Ebert, <strong>D. Farfurnik<\/strong>, G. Haim, R. Shaar, and N. Bar-Gill. Quantitative Vectorial Magnetic Imaging of Multi-Domain Rock Forming Minerals Using Nitrogen-Vacancy Centers in Diamond. <a rel=\"noreferrer noopener\" href=\"http:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S201032471740015X\" target=\"_blank\"><em>SPIN <\/em><strong>07<\/strong>, 1740015 (2017)<\/a>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The energy levels of spin qubits can shift due to the presence of external physical forces and fields such as magnetic and electric fields, strain,&#8230;<\/p>\n","protected":false},"author":123,"featured_media":0,"parent":157,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"page-fullwidth.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-172","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/pages\/172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/users\/123"}],"replies":[{"embeddable":true,"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/comments?post=172"}],"version-history":[{"count":4,"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/pages\/172\/revisions"}],"predecessor-version":[{"id":190,"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/pages\/172\/revisions\/190"}],"up":[{"embeddable":true,"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/pages\/157"}],"wp:attachment":[{"href":"https:\/\/research.ece.ncsu.edu\/farfurnik\/wp-json\/wp\/v2\/media?parent=172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}