{"id":7330,"date":"2021-09-21T13:59:16","date_gmt":"2021-09-21T11:59:16","guid":{"rendered":"https:\/\/www.uni.lu\/fstm-en\/events\/physics-seminarhalf-integer-charge-injection-by-a-josephson-junction-without-excess-noise\/"},"modified":"2021-09-21T13:59:16","modified_gmt":"2021-09-21T11:59:16","slug":"physics-seminarhalf-integer-charge-injection-by-a-josephson-junction-without-excess-noise","status":"publish","type":"events","link":"https:\/\/www.uni.lu\/fstm-en\/events\/physics-seminarhalf-integer-charge-injection-by-a-josephson-junction-without-excess-noise\/","title":{"rendered":"Physics Seminar:Half-integer charge injection by a Josephson junction without excess noise"},"content":{"rendered":"<section class=\"wp-block-unilux-blocks-free-section section\"><div class=\"container xl:max-w-screen-xl\"><p><\/p><p>RWTH Aachen University<\/p><p><\/p><p><\/p><p>\u00a0<\/p><p>A 2\u03c0 phase shift across a Josephson junction in a topological superconductor injects vortices into the chiral edge modes at opposite ends of the junction. When two vortices are fused they transfer charge e\/2 into a normal-metal contact, carried by chiral Majorana edge modes. Here we address the question whether this half-integer charge is a sharp observable, without quantum fluctuations. Because the Majorana modes are gapless, they support charge fluctuations in equilibrium at zero temperature. But we find that the excess noise introduced out of equilibrium by the e\/2 charge transfer vanishes.<\/p><p><\/p><\/div><\/section>","protected":false},"excerpt":{"rendered":"<p>Physics Seminar 23rd of September 2021 at 10:00 amCampus LimpertsbergB\u00e2timent des Sciences \u2013 room BSC 0.03Talk by\u00a0 Prof. Dr. Fabian HasslerRWTH Aachen UniversityInvited by Prof. Thomas SchmidtHalf-integer charge injection by a Josephson junction without excess noise\u00a0A 2\u03c0 phase shift across a Josephson junction in a topological superconductor injects vortices into the chiral edge modes at opposite ends of the junction. When two vortices are fused they transfer charge e\/2 into a normal-metal contact, carried by chiral Majorana edge modes. Here we address the question whether this half-integer charge is a sharp observable, without quantum fluctuations. Because the Majorana modes are gapless, they support charge fluctuations in equilibrium at zero temperature. But we find that the excess noise introduced out of equilibrium by the e\/2 charge transfer vanishes.<\/p>\n","protected":false},"author":0,"featured_media":7331,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"event_start_date":"2021-09-23 10:00:00","event_end_date":"2021-09-23 11:00:00","event_speaker_name":"Talk by Prof. Dr. Fabian Hassler, invited by Prof. Thomas Schmidt","event_speaker_link":"","event_is_online":false,"event_location":"Campus Limpertsberg, BSC 0.03","event_street":"","event_location_link":"","event_zip_code":"","event_city":"","event_country":"LU"},"events-topic":[315],"events-type":[],"organisation":[80],"authorship":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Physics Seminar:Half-integer charge injection by a Josephson junction without excess noise - FSTM events I Uni.lu<\/title>\n<meta name=\"description\" content=\"Physics Seminar 23rd of September 2021 at 10:00 amCampus LimpertsbergB\u00e2timent des Sciences \u2013 room BSC 0.03Talk by\u00a0 Prof. Dr. Fabian HasslerRWTH Aachen UniversityInvited by Prof. Thomas SchmidtHalf-integer charge injection by a Josephson junction without excess noise\u00a0A 2\u03c0 phase shift across a Josephson junction in a topological superconductor injects vortices into the chiral edge modes at opposite ends of the junction. When two vortices are fused they transfer charge e\/2 into a normal-metal contact, carried by chiral Majorana edge modes. Here we address the question whether this half-integer charge is a sharp observable, without quantum fluctuations. Because the Majorana modes are gapless, they support charge fluctuations in equilibrium at zero temperature. 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When two vortices are fused they transfer charge e\/2 into a normal-metal contact, carried by chiral Majorana edge modes. Here we address the question whether this half-integer charge is a sharp observable, without quantum fluctuations. Because the Majorana modes are gapless, they support charge fluctuations in equilibrium at zero temperature. 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