Andreev Modes from Phase Winding in a Full-Shell Nanowire-Based Transmon
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Standard
Andreev Modes from Phase Winding in a Full-Shell Nanowire-Based Transmon. / Kringhoj, A.; Winkler, G. W.; Larsen, T. W.; Sabonis, D.; Erlandsson, O.; Krogstrup, P.; van Heck, B.; Petersson, K. D.; Marcus, C. M.
I: Physical Review Letters, Bind 126, Nr. 4, 047701, 29.01.2021.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Andreev Modes from Phase Winding in a Full-Shell Nanowire-Based Transmon
AU - Kringhoj, A.
AU - Winkler, G. W.
AU - Larsen, T. W.
AU - Sabonis, D.
AU - Erlandsson, O.
AU - Krogstrup, P.
AU - van Heck, B.
AU - Petersson, K. D.
AU - Marcus, C. M.
PY - 2021/1/29
Y1 - 2021/1/29
N2 - We investigate transmon qubits made from semiconductor nanowires with a fully surrounding superconducting shell. In the regime of reentrant superconductivity associated with the destructive Little-Parks effect, numerous coherent transitions are observed in the first reentrant lobe, where the shell carries 2 pi winding of superconducting phase, and are absent in the zeroth lobe. As junction density was increased by gate voltage, qubit coherence was suppressed then lost in the first lobe. These observations and numerical simulations highlight the role of winding-induced Andreev states in the junction.
AB - We investigate transmon qubits made from semiconductor nanowires with a fully surrounding superconducting shell. In the regime of reentrant superconductivity associated with the destructive Little-Parks effect, numerous coherent transitions are observed in the first reentrant lobe, where the shell carries 2 pi winding of superconducting phase, and are absent in the zeroth lobe. As junction density was increased by gate voltage, qubit coherence was suppressed then lost in the first lobe. These observations and numerical simulations highlight the role of winding-induced Andreev states in the junction.
KW - STATES
U2 - 10.1103/PhysRevLett.126.047701
DO - 10.1103/PhysRevLett.126.047701
M3 - Letter
C2 - 33576664
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 4
M1 - 047701
ER -
ID: 260403237