Selective control of conductance modes in multi-terminal Josephson junctions

Gino V. Graziano; Mohit Gupta; Mihir Pendharkar; Jason T. Dong; Connor P. Dempsey; Chris Palmstrøm; Vlad S. Pribiag

doi:10.1038/s41467-022-33682-2

Selective control of conductance modes in multi-terminal Josephson junctions

Gino V. Graziano
, Mohit Gupta
, Mihir Pendharkar
, Jason T. Dong
, Connor P. Dempsey
, Chris Palmstrøm
, Vlad S. Pribiag

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of a multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work, we employ a quantum point contact geometry in three-terminal Josephson devices to demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.

Original language	English (US)
Article number	5933
Journal	Nature communications
Volume	13
Issue number	1
DOIs	https://doi.org/10.1038/s41467-022-33682-2
State	Published - Dec 2022

Bibliographical note

Funding Information:
We thank Alex Levchenko and Steven Koester for their helpful discussions. This work was supported primarily by the National Science Foundation under Award No. DMR-1554609. The work at UCSB was supported by the Department of Energy under Award No. DE-SC0019274. The development of the epitaxial growth process was supported by Microsoft Research. Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under Award Number ECCS-1542202.

Publisher Copyright:
© 2022, The Author(s).

Publisher link

10.1038/s41467-022-33682-2

Find It

Find It at U of M Libraries

Cite this

@article{4ed8b53822dc4243853471be0c02621d,

title = "Selective control of conductance modes in multi-terminal Josephson junctions",

abstract = "The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of a multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work, we employ a quantum point contact geometry in three-terminal Josephson devices to demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.",

author = "Graziano, \{Gino V.\} and Mohit Gupta and Mihir Pendharkar and Dong, \{Jason T.\} and Dempsey, \{Connor P.\} and Chris Palmstr{\o}m and Pribiag, \{Vlad S.\}",

note = "Funding Information: We thank Alex Levchenko and Steven Koester for their helpful discussions. This work was supported primarily by the National Science Foundation under Award No. DMR-1554609. The work at UCSB was supported by the Department of Energy under Award No. DE-SC0019274. The development of the epitaxial growth process was supported by Microsoft Research. Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under Award Number ECCS-1542202. Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = dec,

doi = "10.1038/s41467-022-33682-2",

language = "English (US)",

volume = "13",

journal = "Nature communications",

issn = "2041-1723",

publisher = "Nature Research",

number = "1",

}

TY - JOUR

T1 - Selective control of conductance modes in multi-terminal Josephson junctions

AU - Graziano, Gino V.

AU - Gupta, Mohit

AU - Pendharkar, Mihir

AU - Dong, Jason T.

AU - Dempsey, Connor P.

AU - Palmstrøm, Chris

AU - Pribiag, Vlad S.

N1 - Funding Information: We thank Alex Levchenko and Steven Koester for their helpful discussions. This work was supported primarily by the National Science Foundation under Award No. DMR-1554609. The work at UCSB was supported by the Department of Energy under Award No. DE-SC0019274. The development of the epitaxial growth process was supported by Microsoft Research. Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under Award Number ECCS-1542202. Publisher Copyright: © 2022, The Author(s).

PY - 2022/12

Y1 - 2022/12

N2 - The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of a multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work, we employ a quantum point contact geometry in three-terminal Josephson devices to demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.

AB - The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of a multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work, we employ a quantum point contact geometry in three-terminal Josephson devices to demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.

UR - https://www.scopus.com/pages/publications/85139406420

UR - https://www.scopus.com/pages/publications/85139406420#tab=citedBy

U2 - 10.1038/s41467-022-33682-2

DO - 10.1038/s41467-022-33682-2

M3 - Article

C2 - 36209199

AN - SCOPUS:85139406420

SN - 2041-1723

VL - 13

JO - Nature communications

JF - Nature communications

IS - 1

M1 - 5933

ER -

Selective control of conductance modes in multi-terminal Josephson junctions

Abstract

Bibliographical note

Publisher link

Find It

Other files and links

Fingerprint

Cite this