{"id":1928,"date":"2025-12-12T14:36:13","date_gmt":"2025-12-12T05:36:13","guid":{"rendered":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/?p=1928"},"modified":"2025-12-12T14:56:19","modified_gmt":"2025-12-12T05:56:19","slug":"20251212","status":"publish","type":"post","link":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/news2025\/20251212\/","title":{"rendered":"Strengthening Quantum Ties Between Japan and Germany\uff1aASPIRE Student David\u2019s Stay"},"content":{"rendered":"<p>This November, we welcomed David, a student from the Quantum Optics Group led by Prof. Dr. Christoph Becher at Saarland University. His visit is part of the ASPIRE project \u201cDIAMONDQTECH.\u201d<br \/>\nDuring his three-week stay, he joined our research on diamond-based quantum technology while experiencing life and research in Japan.<br \/>\nWe spoke with him about his impressions, and what he gained from his time in the lab.<\/p>\n<div id='gallery-1' class='gallery galleryid-1928 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313.jpg'><img decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-300x225.jpg\" class=\"attachment-medium size-medium\" alt=\"\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-300x225.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-1024x768.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-768x576.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-1536x1152.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/PXL_20251120_044105313-2048x1536.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p><strong><span style=\"color: #2b5bbd;\">Interview with David<\/span><\/strong><\/p>\n<p><strong>Q1: Could you briefly introduce yourself and your research background?<\/strong><br \/>\nMy name is David Lindler, and I am currently in the third year of my PhD in the experimental physics group of Christoph Becher in Saarbr\u00fccken. The main focus of my research is nonlinear optics for use in quantum communication networks, particularly quantum frequency conversion. This includes designing, building, and aligning optical setups; planning and conducting experiments with single photons transmitted over deployed fibers in Saarbr\u00fccken; and analyzing the collected data as well as developing appropriate theoretical models to describe the experimental outcomes.<\/p>\n<p><strong>Q2: What goals did you have for your stay here?<\/strong><br \/>\nSince my stay in Japan was relatively short, my main goals were to exchange ideas, discuss the different research directions we are pursuing, and learn about the various approaches to similar challenges. I also wanted to use this opportunity to build connections and strengthen collaboration for future projects.<\/p>\n<div id='gallery-2' class='gallery galleryid-1928 gallery-columns-3 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30.jpg'><img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30-300x169.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-1863\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30-300x169.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30-1024x575.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30-768x432.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-30.jpg 1050w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-1863'>\n\t\t\t\tDavid joining experiments in our lab\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31.jpg'><img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31-300x169.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-1862\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31-300x169.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31-1024x576.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31-768x432.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-31.jpg 1050w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-1862'>\n\t\t\t\tSharing and teaching each other experimental techniques\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32.png'><img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32-300x169.png\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-2-1861\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32-300x169.png 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32-1024x576.png 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32-768x432.png 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/image-32.png 1050w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-1861'>\n\t\t\t\tEngaging in deep discussions on theory and methods\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p><strong>Q3: Was there anything that surprised you or differed from how research is done in Germany?<\/strong><br \/>\nI was very surprised how much of the research here is done by the bachelor and master students, in Germany most of the research work is done by PhD Students. I think it is great to give the student the opportunity to contribute to exciting research and learn how to work as a researcher. Theres also a lot more research equipment per person than is usual in Germany.<\/p>\n<p><strong>Q4: How was your experience working with Japanese students and researchers?<\/strong><br \/>\nEveryone was very welcoming and helpful, and everyone was happy to talk with me about all sorts of topics. I felt comfortable asking questions or discussing ideas. I was impressed by the high level of organization the students showed in their research and by the close collaboration within the group. Overall, the atmosphere made it easy to learn from one another and stay motivated.<\/p>\n<p><strong>Q5: Did you have a favorite place, food, or experience outside the lab?<\/strong><br \/>\nI visited Kyoto during one of the weekends, and although it was very crowded, I still enjoyed the experience of visiting the various historical temples and shrines. The autumn leaves around Kiyomizu-dera Temple were especially beautiful. Another highlight I have to mention was Enoshima Island, with its charming climbing streets and fantastic ocean views.<\/p>\n<div id='gallery-3' class='gallery galleryid-1928 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010.jpg'><img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-300x169.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-3-1930\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-300x169.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-1024x576.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-768x432.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-1536x864.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251123_132010-2048x1152.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-3-1930'>\n\t\t\t\tKiyomizu-dera Temple\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854.jpg'><img decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-300x169.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-3-1931\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-300x169.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-1024x576.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-768x432.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-1536x864.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/20251115_154854-2048x1152.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-3-1931'>\n\t\t\t\tEnoshima Island\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p><strong>Q6: Do you have a message for future Aspire participants or students?<\/strong><br \/>\nI would like to encourage anyone who has the chance to participate in the exchange program to take the opportunity. Experiencing a different culture and research environment truly broadens your own perspective and helps you re-examine aspects of your own work and life that you may have considered self-evident. It\u2019s for sure a valuable opportunity for both personal and academic growth and also just lots of fun.<\/p>\n<div id='gallery-4' class='gallery galleryid-1928 gallery-columns-3 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427.jpg'><img decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-300x225.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-4-1884\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-300x225.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-1024x768.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-768x576.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-1536x1152.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/IMG_0427-2048x1536.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-1884'>\n\t\t\t\tDavid and our team at Asakusa \n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030.jpg'><img decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-300x225.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-4-1889\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-300x225.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-1024x768.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-768x576.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-1536x1152.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/11\/PXL_20251114_022250030-2048x1536.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-1889'>\n\t\t\t\tTokyo Skytree\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1.jpg'><img decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-300x225.jpg\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-4-1933\" srcset=\"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-300x225.jpg 300w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-1024x768.jpg 1024w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-768x576.jpg 768w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-1536x1152.jpg 1536w, https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-content\/uploads\/2025\/12\/IMG_0968-1-2048x1536.jpg 2048w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-1933'>\n\t\t\t\tFarewell party\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>The ASPIRE project \u201cDIAMONDQTECH\u201d is part of a Japan\u2013Germany initiative that brings together researchers to explore and advance quantum technologies while building lasting international connections.<\/p>\n<p>We hope David\u2019s stay at our lab has given him new perspectives for his future career and will inspire others to exchange ideas across countries through projects like ASPIRE.<\/p>\n<p>We would like to thank the ASPIRE program, JST, and DFG for making such exchanges possible, and we will continue to promote active collaboration between our students and partner institutions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This November, we welcomed David, a student from the Quantum Optics Group led by Prof. Dr. Christoph Becher at Saarland University. His visit is part of the ASPIRE project \u201cDIAMONDQTECH.\u201d During his three-week stay, he joined our research on diamond-based quantum technology while experiencing life and research in Japan. We spoke with him about his impressions, and what he gained from his time in the lab. Interview with David Q1: Could you briefly introduce yourself and your research background? My name is David Lindler, and I am currently in the third year of my PhD in the experimental physics group of Christoph Becher in Saarbr\u00fccken. The main focus of my [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1889,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"news_cat":[43],"class_list":["post-1928","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news2025","news_cat-projects"],"_links":{"self":[{"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1928","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=1928"}],"version-history":[{"count":11,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1928\/revisions"}],"predecessor-version":[{"id":1943,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/posts\/1928\/revisions\/1943"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/media\/1889"}],"wp:attachment":[{"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=1928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/categories?post=1928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/tags?post=1928"},{"taxonomy":"news_cat","embeddable":true,"href":"https:\/\/kosaka-lab.ynu.ac.jp\/en\/wp-json\/wp\/v2\/news_cat?post=1928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}