{"id":912,"date":"2024-12-02T22:00:38","date_gmt":"2024-12-02T20:00:38","guid":{"rendered":"https:\/\/phsites.technion.ac.il\/attonano\/?p=912"},"modified":"2025-05-06T12:54:53","modified_gmt":"2025-05-06T09:54:53","slug":"quantum-tunneling-goes-ultrafast-in-three-steps","status":"publish","type":"post","link":"https:\/\/phsites.technion.ac.il\/attonano\/quantum-tunneling-goes-ultrafast-in-three-steps\/","title":{"rendered":"Quantum tunneling goes ultrafast in three steps"},"content":{"rendered":"\n

Quantum tunneling goes attosecond in three steps<\/strong><\/p>\n\n\n\n

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Quantum tunneling of electrons between a nanotip and a sample in a scanning tunneling microscopy (STM) provides atomic-scale resolution, but lacks time resolution. Recent experiments have shown that ultrashort laser pulses can make the tunneling process in STM ultrafast down to the attosecond timescale, but a comprehensive physical picture of the underlying mechanism has been missing. In our new work in Physical Review Letters<\/a>, Ph.D. student Boyang Ma has cracked the challenging theoretical problem of attosecond STM and formulated an intuitive strong-field theory model. Most strikingly, we find the well-known three-step picture of attosecond science at work. In step 1, the electron tunnels from the nanotip into the small nanometer-sized gap and gains kinetic energy in step 2, before entering the sample in step 3. The model allows for predictions of our ongoing experimental work – stay tuned! For his work, Boyang Ma has been awarded the KLA award for excellent research – congratulations!<\/p>\n<\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Quantum tunneling goes attosecond in three steps<\/p>\n","protected":false},"author":47,"featured_media":915,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-912","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-uncategorized","8":"entry"},"yoast_head":"\nQuantum tunneling goes ultrafast in three steps - Prof. Michael Krueger's website<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/phsites.technion.ac.il\/attonano\/quantum-tunneling-goes-ultrafast-in-three-steps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quantum tunneling goes ultrafast in three steps - 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