{"id":2,"date":"2015-04-23T09:20:22","date_gmt":"2015-04-23T07:20:22","guid":{"rendered":"http:\/\/www.bautze.net\/blog\/?page_id=2"},"modified":"2019-06-15T13:07:15","modified_gmt":"2019-06-15T11:07:15","slug":"beispiel-seite","status":"publish","type":"page","link":"https:\/\/www.bautze.net\/blog\/?page_id=2","title":{"rendered":"scientific publications"},"content":{"rendered":"

Theoretical, numerical, and experimental study of a flying qubit electronic interferometer<\/b><\/span><\/span><\/span><\/p>\n

Tobias Bautze<\/strong>, Christoph S\u00fcssmeier, Shintaro Takada, Christoph Groth, Tristan Meunier, Michihisa Yamamoto, Seigo Tarucha, Xavier Waintal, Christopher B\u00e4uerle<\/span><\/span><\/span><\/p>\n

abstract<\/em>: <\/span><\/span><\/span>We discuss an electronic interferometer recently measured by Yamamoto <\/span><\/span><\/span>et al.<\/i><\/span><\/span><\/span> This \u201cflying quantum bit\u201d experiment showed quantum oscillations between electronic trajectories of two tunnel-coupled wires connected via an Aharanov-Bohm ring. We present a simple scattering model as well as a numerical microscopic model to describe this experiment. In addition, we present experimental data to which we confront our numerical results. While our analytical model provides basic concepts for designing the flying qubit device, we find that our numerical simulations allow us to reproduce detailed features of the transport measurements such as in-phase and antiphase oscillations of the two output currents as well as a smooth phase shift when sweeping a side gate. Furthermore, we find remarkable resemblance for the magnetoconductance oscillations in both conductance and visibility between simulations and experiments within a specific parameter range.<\/span><\/span><\/span><\/p>\n

Physical Review B 89 (2014), 125432<\/a><\/p>\n

Superconducting nano-mechanical diamond resonators<\/b><\/span><\/span><\/span><\/p>\n

Tobias Bautze<\/strong>, Soumen Mandal, Oliver A Williams, Pierre Rodiere, Tristan Meunier and Christopher B\u00e4uerle<\/span><\/span><\/span><\/p>\n

abstract<\/em>: <\/span><\/span><\/span>In this work we present the fabrication and characterization of superconducting nano-mechanical resonators made from nanocrystalline boron doped diamond (BDD). The oscillators can be driven and read out in their superconducting state and show quality factors as high as 40,000 at a resonance frequency of around 10 MHz. Mechanical damping is studied for magnetic fields up to 3 T where the resonators still show superconducting properties. Due to their simple fabrication procedure, the devices can easily be coupled to other superconducting circuits and their performance is comparable with state-of-the-art technology.<\/span><\/span><\/span><\/p>\n

Carbon <\/span><\/span>72<\/b><\/span><\/span> (2014), 100-105<\/span><\/span><\/a><\/p>\n

Superconductivity in Nanostructured Boron-doped Diamond and its Application to Device Fabrication<\/b><\/span><\/span><\/span><\/p>\n

Soumen Mandal, Tobias Bautze<\/strong> and Christopher B\u00e4uerle<\/span><\/span><\/span><\/p>\n

Nanodiamond <\/span><\/span>31<\/b><\/span><\/span> (2013), 385<\/span><\/span><\/p>\n

The diamond superconducting quantum interference device<\/b><\/span><\/span><\/span><\/p>\n

Soumen Mandal, Tobias Bautze<\/strong>, Oliver A Williams, Cecile Naud, Etienne Bustarret, Franck Omnes, Pierre Rodiere, Tristan Meunier, Christopher B\u00e4uerle and Laurent Saminadayar<\/span><\/span><\/span><\/p>\n

ACS nano <\/span><\/span>5<\/b><\/span><\/span> (2011), 7144-7148<\/span><\/span><\/a><\/p>\n

Efficient radio frequency filters for space constrained cryogenic setups<\/b><\/span><\/span><\/span><\/p>\n

Soumen Mandal, Tobias Bautze<\/strong>, R\u00e9mi Blinder, Tristan Meunier, Laurent Saminadayar and Christopher B\u00e4uerle<\/span><\/span><\/span><\/p>\n

Review of Scientific Instruments <\/span><\/span>82<\/b><\/span><\/span> (2011), 024704<\/span><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Theoretical, numerical, and experimental study of a flying qubit electronic interferometer Tobias Bautze, Christoph S\u00fcssmeier, Shintaro Takada, Christoph Groth, Tristan Meunier, Michihisa Yamamoto, Seigo Tarucha, Xavier Waintal, Christopher B\u00e4uerle abstract: We discuss an electronic interferometer recently measured by Yamamoto et al. This \u201cflying quantum bit\u201d experiment showed quantum oscillations between electronic trajectories of two tunnel-coupled wires connected via an Aharanov-Bohm ring. We present a simple scattering model as well as a numerical microscopic model to describe this experiment. In addition, we present experimental data to which we confront our numerical results. While our analytical model provides basic concepts for designing the flying qubit device, we find that our numerical simulations allow us to reproduce detailed features of the transport measurements such as in-phase and antiphase oscillations of the two output currents as well as a smooth phase shift when sweeping a side gate. Furthermore, we find remarkable resemblance for the magnetoconductance oscillations in both conductance and visibility between simulations and experiments within a specific parameter range. Physical Review B 89 (2014), 125432 Superconducting nano-mechanical diamond resonators Tobias Bautze, Soumen Mandal, Oliver A Williams, Pierre Rodiere, Tristan Meunier and Christopher B\u00e4uerle abstract: In this work we present the fabrication and characterization […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":5,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2"}],"version-history":[{"count":8,"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2\/revisions"}],"predecessor-version":[{"id":1836,"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2\/revisions\/1836"}],"wp:attachment":[{"href":"https:\/\/www.bautze.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}