TY - JOUR
T1 - Energy distribution controlled ballistic Josephson junction
AU - Pandey, P.
AU - Beckmann, D.
AU - Danneau, R.
N1 - Funding Information:
The authors thank R. Mélin and C. Winkelmann for fruitful discussions. This work was partly supported by Helmholtz Society through program STN and the DFG via the Projects No. DA 1280/3-1, No. DA 1280/7-1, and No. BE 4422/4-1.
Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/12/7
Y1 - 2022/12/7
N2 - We report an experimental study on the tuning of supercurrent in a ballistic graphene-based Josephson junction by applying a control voltage to a transverse normal channel. In this four-terminal geometry, the control voltage changes the occupation of Andreev states in the Josephson junction, thereby tuning the magnitude of the supercurrent. As a function of gate voltage, we find two different regimes characterized by a double-step distribution and a hot-electron distribution, respectively. Our work opens opportunities to design highly controllable Josephson junctions for tunable superconducting quantum circuits.
AB - We report an experimental study on the tuning of supercurrent in a ballistic graphene-based Josephson junction by applying a control voltage to a transverse normal channel. In this four-terminal geometry, the control voltage changes the occupation of Andreev states in the Josephson junction, thereby tuning the magnitude of the supercurrent. As a function of gate voltage, we find two different regimes characterized by a double-step distribution and a hot-electron distribution, respectively. Our work opens opportunities to design highly controllable Josephson junctions for tunable superconducting quantum circuits.
UR - http://www.scopus.com/inward/record.url?scp=85143666407&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.106.214503
DO - 10.1103/PhysRevB.106.214503
M3 - Article
AN - SCOPUS:85143666407
VL - 106
SP - 1
EP - 10
JO - Physical Review B (Condensed Matter and Materials Physics)
JF - Physical Review B (Condensed Matter and Materials Physics)
SN - 2469-9950
IS - 21
M1 - 214503
ER -