[{"arxiv":1,"title":"Numerical quantum clock simulations for measuring tunneling times","article_number":"042216","author":[{"first_name":"Fumika","last_name":"Suzuki","full_name":"Suzuki, Fumika","orcid":"0000-0003-4982-5970","id":"650C99FC-1079-11EA-A3C0-73AE3DDC885E"},{"full_name":"Unruh, William G.","first_name":"William G.","last_name":"Unruh"}],"day":"20","publication":"Physical Review A","scopus_import":"1","ec_funded":1,"article_processing_charge":"No","article_type":"original","publisher":"American Physical Society","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","department":[{"_id":"MiLe"}],"doi":"10.1103/PhysRevA.107.042216","quality_controlled":"1","publication_identifier":{"issn":["2469-9926"],"eissn":["2469-9934"]},"isi":1,"language":[{"iso":"eng"}],"issue":"4","project":[{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"}],"volume":107,"date_created":"2023-05-07T22:01:03Z","abstract":[{"lang":"eng","text":"We numerically study two methods of measuring tunneling times using a quantum clock. In the conventional method using the Larmor clock, we show that the Larmor tunneling time can be shorter for higher tunneling barriers. In the second method, we study the probability of a spin-flip of a particle when it is transmitted through a potential barrier including a spatially rotating field interacting with its spin. According to the adiabatic theorem, the probability depends on the velocity of the particle inside the barrier. It is numerically observed that the probability increases for higher barriers, which is consistent with the result obtained by the Larmor clock. By comparing outcomes for different initial spin states, we suggest that one of the main causes of the apparent decrease in the tunneling time can be the filtering effect occurring at the end of the barrier."}],"date_updated":"2023-08-01T14:33:21Z","type":"journal_article","oa_version":"Preprint","month":"04","_id":"12914","acknowledgement":"We thank W. H. Zurek, N. Sinitsyn, M. O. Scully, M. Arndt, and C. H. Marrows for helpful discussions. F.S. acknowledges support from the Los Alamos National Laboratory LDRD program under Project No. 20230049DR and the Center for Nonlinear Studies. F.S. also thanks the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant No. 754411 for support. W.G.U. thanks the Natural Science and Engineering Research Council of Canada, the Hagler Institute of Texas A&M University, the Helmholz Inst HZDR, Germany for support while this work was being done.","year":"2023","date_published":"2023-04-20T00:00:00Z","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2207.13130"}],"oa":1,"publication_status":"published","intvolume":"       107","citation":{"ama":"Suzuki F, Unruh WG. Numerical quantum clock simulations for measuring tunneling times. <i>Physical Review A</i>. 2023;107(4). doi:<a href=\"https://doi.org/10.1103/PhysRevA.107.042216\">10.1103/PhysRevA.107.042216</a>","ista":"Suzuki F, Unruh WG. 2023. Numerical quantum clock simulations for measuring tunneling times. Physical Review A. 107(4), 042216.","mla":"Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations for Measuring Tunneling Times.” <i>Physical Review A</i>, vol. 107, no. 4, 042216, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevA.107.042216\">10.1103/PhysRevA.107.042216</a>.","apa":"Suzuki, F., &#38; Unruh, W. G. (2023). Numerical quantum clock simulations for measuring tunneling times. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.107.042216\">https://doi.org/10.1103/PhysRevA.107.042216</a>","ieee":"F. Suzuki and W. G. Unruh, “Numerical quantum clock simulations for measuring tunneling times,” <i>Physical Review A</i>, vol. 107, no. 4. American Physical Society, 2023.","chicago":"Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations for Measuring Tunneling Times.” <i>Physical Review A</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevA.107.042216\">https://doi.org/10.1103/PhysRevA.107.042216</a>.","short":"F. Suzuki, W.G. Unruh, Physical Review A 107 (2023)."},"status":"public","external_id":{"arxiv":["2207.13130"],"isi":["000975799300006"]}},{"publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"quality_controlled":"1","doi":"10.1103/physrevlett.127.160602","project":[{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"},{"name":"Angulon: physics and applications of a new quasiparticle","call_identifier":"H2020","_id":"2688CF98-B435-11E9-9278-68D0E5697425","grant_number":"801770"}],"language":[{"iso":"eng"}],"issue":"16","isi":1,"keyword":["General Physics and Astronomy"],"day":"12","author":[{"id":"650C99FC-1079-11EA-A3C0-73AE3DDC885E","orcid":"0000-0003-4982-5970","full_name":"Suzuki, Fumika","last_name":"Suzuki","first_name":"Fumika"},{"orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","first_name":"Mikhail"},{"full_name":"Zurek, Wojciech H.","first_name":"Wojciech H.","last_name":"Zurek"},{"full_name":"Krems, Roman V.","last_name":"Krems","first_name":"Roman V."}],"arxiv":1,"title":"Anderson localization of composite particles","article_number":"160602","department":[{"_id":"MiLe"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publisher":"American Physical Society ","article_processing_charge":"No","ec_funded":1,"scopus_import":"1","article_type":"original","publication":"Physical Review Letters","publication_status":"published","oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/2011.06279","open_access":"1"}],"date_published":"2021-10-12T00:00:00Z","status":"public","external_id":{"isi":["000707495700001"],"arxiv":["2011.06279"]},"citation":{"ieee":"F. Suzuki, M. Lemeshko, W. H. Zurek, and R. V. Krems, “Anderson localization of composite particles,” <i>Physical Review Letters</i>, vol. 127, no. 16. American Physical Society , 2021.","chicago":"Suzuki, Fumika, Mikhail Lemeshko, Wojciech H. Zurek, and Roman V. Krems. “Anderson Localization of Composite Particles.” <i>Physical Review Letters</i>. American Physical Society , 2021. <a href=\"https://doi.org/10.1103/physrevlett.127.160602\">https://doi.org/10.1103/physrevlett.127.160602</a>.","short":"F. Suzuki, M. Lemeshko, W.H. Zurek, R.V. Krems, Physical Review Letters 127 (2021).","ama":"Suzuki F, Lemeshko M, Zurek WH, Krems RV. Anderson localization of composite particles. <i>Physical Review Letters</i>. 2021;127(16). doi:<a href=\"https://doi.org/10.1103/physrevlett.127.160602\">10.1103/physrevlett.127.160602</a>","mla":"Suzuki, Fumika, et al. “Anderson Localization of Composite Particles.” <i>Physical Review Letters</i>, vol. 127, no. 16, 160602, American Physical Society , 2021, doi:<a href=\"https://doi.org/10.1103/physrevlett.127.160602\">10.1103/physrevlett.127.160602</a>.","ista":"Suzuki F, Lemeshko M, Zurek WH, Krems RV. 2021. Anderson localization of composite particles. Physical Review Letters. 127(16), 160602.","apa":"Suzuki, F., Lemeshko, M., Zurek, W. H., &#38; Krems, R. V. (2021). Anderson localization of composite particles. <i>Physical Review Letters</i>. American Physical Society . <a href=\"https://doi.org/10.1103/physrevlett.127.160602\">https://doi.org/10.1103/physrevlett.127.160602</a>"},"intvolume":"       127","date_updated":"2024-02-29T12:34:10Z","abstract":[{"text":"We investigate the effect of coupling between translational and internal degrees of freedom of composite quantum particles on their localization in a random potential. We show that entanglement between the two degrees of freedom weakens localization due to the upper bound imposed on the inverse participation ratio by purity of a quantum state. We perform numerical calculations for a two-particle system bound by a harmonic force in a 1D disordered lattice and a rigid rotor in a 2D disordered lattice. We illustrate that the coupling has a dramatic effect on localization properties, even with a small number of internal states participating in quantum dynamics.","lang":"eng"}],"oa_version":"Preprint","month":"10","type":"journal_article","date_created":"2021-10-13T09:21:33Z","volume":127,"year":"2021","acknowledgement":"We acknowledge helpful discussions with W. G. Unruh and A. Rodriguez. F. S. is supported by European Union’s\r\nHorizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant No. 754411. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). W. H. Z. is\r\nsupported by Department of Energy under the Los\r\nAlamos National Laboratory LDRD Program as well as by the U.S. Department of Energy, Office of Science, Basic\r\nEnergy Sciences, Materials Sciences and Engineering Division, Condensed Matter Theory Program. R. V. K. is supported by NSERC of Canada.\r\n","_id":"10134"}]