{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T01:55:21Z","timestamp":1792115721154,"version":"4.4.0"},"reference-count":64,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"6675","content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Science"],"published-print":{"date-parts":[[2023,12,8]]},"abstract":"<jats:p>\n                    Ultracold polar molecules are promising candidate qubits for quantum computing and quantum simulations. Their long-lived molecular rotational states form robust qubits, and the long-range dipolar interaction between molecules provides quantum entanglement. In this work, we demonstrate dipolar spin-exchange interactions between single calcium monofluoride (CaF) molecules trapped in an optical tweezer array. We realized the spin-\n                    <jats:inline-formula>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mfrac>\n                            <mml:mn>1<\/mml:mn>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:mfrac>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    quantum XY model by encoding an effective spin-\n                    <jats:inline-formula>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mfrac>\n                            <mml:mn>1<\/mml:mn>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:mfrac>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    system into the rotational states of the molecules and used it to generate a Bell state through an iSWAP operation. Conditioned on the verified existence of molecules in both tweezers at the end of the measurement, we obtained a Bell state fidelity of 0.89(6). Using interleaved tweezer arrays, we demonstrate single-site molecular addressability.\n                  <\/jats:p>","DOI":"10.1126\/science.adf8999","type":"journal-article","created":{"date-parts":[[2023,12,7]],"date-time":"2023-12-07T13:58:54Z","timestamp":1701957534000},"page":"1138-1143","update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":128,"title":["Dipolar spin-exchange and entanglement between molecules in an optical tweezer array"],"prefix":"10.1126","volume":"382","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0955-8567","authenticated-orcid":true,"given":"Yicheng","family":"Bao","sequence":"first","affiliation":[{"name":"Department of Physics, Harvard University, Cambridge, MA 02138, USA."},{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8364-8894","authenticated-orcid":true,"given":"Scarlett S.","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Physics, Harvard University, Cambridge, MA 02138, USA."},{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4282-3369","authenticated-orcid":true,"given":"Lo\u00efc","family":"Anderegg","sequence":"additional","affiliation":[{"name":"Department of Physics, Harvard University, Cambridge, MA 02138, USA."},{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6128-5909","authenticated-orcid":true,"given":"Eunmi","family":"Chae","sequence":"additional","affiliation":[{"name":"Department of Physics, Korea University, Seongbuk-gu, Seoul 02841, South Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9528-3044","authenticated-orcid":true,"given":"Wolfgang","family":"Ketterle","sequence":"additional","affiliation":[{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."},{"name":"Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0537-0719","authenticated-orcid":true,"given":"Kang-Kuen","family":"Ni","sequence":"additional","affiliation":[{"name":"Department of Physics, Harvard University, Cambridge, MA 02138, USA."},{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."},{"name":"Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9793-7630","authenticated-orcid":true,"given":"John M.","family":"Doyle","sequence":"additional","affiliation":[{"name":"Department of Physics, Harvard University, Cambridge, MA 02138, USA."},{"name":"Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","first-page":"1","article-title":"Lecture notes for physics 229: Quantum information and computation","volume":"16","author":"Preskill J.","year":"1998","unstructured":"J. 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Bao S. S. Yu L. Anderegg E. Chae W. Ketterle K.-K. Ni J. M. DoyleData for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array. Zenodo (2023); https:\/\/doi.org\/10.5281\/zenodo.8404386.10.5281\/zenodo.8404386","DOI":"10.1126\/science.adf8999"},{"key":"e_1_3_2_67_2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevA.78.033425"}],"container-title":["Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.science.org\/doi\/pdf\/10.1126\/science.adf8999","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,1,15]],"date-time":"2024-01-15T19:20:59Z","timestamp":1705346459000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.science.org\/doi\/10.1126\/science.adf8999"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,12,8]]},"references-count":64,"journal-issue":{"issue":"6675","published-print":{"date-parts":[[2023,12,8]]}},"alternative-id":["10.1126\/science.adf8999"],"URL":"https:\/\/doi.org\/10.1126\/science.adf8999","relation":{},"ISSN":["0036-8075","1095-9203"],"issn-type":[{"value":"0036-8075","type":"print"},{"value":"1095-9203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,12,8]]},"assertion":[{"value":"2022-11-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-10-12","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-12-07","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}