Microwave Susceptibility Observation of Interacting Many-Body Andreev States
Research output: Contribution to journal › Letter › Research › peer-review
Standard
Microwave Susceptibility Observation of Interacting Many-Body Andreev States. / Fatemi, V.; Kurilovich, P. D.; Hays, M.; Bouman, D.; Connolly, T.; Diamond, S.; Frattini, N. E.; Kurilovich, V. D.; Krogstrup, P.; Nygard, J.; Geresdi, A.; Glazman, L.; Devoret, M. H.
In: Physical Review Letters, Vol. 129, No. 22, 227701, 21.11.2022.Research output: Contribution to journal › Letter › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Microwave Susceptibility Observation of Interacting Many-Body Andreev States
AU - Fatemi, V.
AU - Kurilovich, P. D.
AU - Hays, M.
AU - Bouman, D.
AU - Connolly, T.
AU - Diamond, S.
AU - Frattini, N. E.
AU - Kurilovich, V. D.
AU - Krogstrup, P.
AU - Nygard, J.
AU - Geresdi, A.
AU - Glazman, L.
AU - Devoret, M. H.
PY - 2022/11/21
Y1 - 2022/11/21
N2 - Electrostatic charging affects the many-body spectrum of Andreev states, yet its influence on their microwave properties has not been elucidated. We developed a circuit quantum electrodynamics probe that, in addition to transition spectroscopy, measures the microwave susceptibility of different states of a semiconductor nanowire weak link with a single dominant (spin-degenerate) Andreev level. We found that the microwave susceptibility does not exhibit a particle-hole symmetry, which we qualitatively explain as an influence of Coulomb interaction. Moreover, our state-selective measurement reveals a large, p-phase shifted contribution to the response common to all many-body states which can be interpreted as arising from a phase-dependent continuum in the superconducting density of states.
AB - Electrostatic charging affects the many-body spectrum of Andreev states, yet its influence on their microwave properties has not been elucidated. We developed a circuit quantum electrodynamics probe that, in addition to transition spectroscopy, measures the microwave susceptibility of different states of a semiconductor nanowire weak link with a single dominant (spin-degenerate) Andreev level. We found that the microwave susceptibility does not exhibit a particle-hole symmetry, which we qualitatively explain as an influence of Coulomb interaction. Moreover, our state-selective measurement reveals a large, p-phase shifted contribution to the response common to all many-body states which can be interpreted as arising from a phase-dependent continuum in the superconducting density of states.
KW - COHERENT MANIPULATION
KW - PYTHON FRAMEWORK
KW - BOUND-STATES
KW - QUANTUM
KW - DYNAMICS
KW - QUTIP
U2 - 10.1103/PhysRevLett.129.227701
DO - 10.1103/PhysRevLett.129.227701
M3 - Letter
C2 - 36493424
VL - 129
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 22
M1 - 227701
ER -
ID: 337351830