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PreprintarXiv licencearXiv

Time- and phase-resolved emulation of sign-selective counterdiabatic dynamics in a superconducting qutrit

  • Yiwen Li
  • Luojia Xu
  • Xinsheng Tan
  • Yang Yu
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Abstract

In cyclic three-level systems, phase-sensitive interference can convert a coupling-sign reversal into a population contrast, providing a controllable analogue of handedness. We emulate this mechanism in a superconducting transmon qutrit using two resonant single-photon drives and a phase-controlled effective two-photon drive. Effective loop phases ΦL=+π/2 and ΦR=−π/2, separated by π, reverse the auxiliary contribution to the dark--bright coupling, canceling the intrinsic nonadiabatic term for L and reinforcing it for R. Time-resolved trajectories reveal dark-pathway transfer for L and bright-manifold participation for R. Measured late-time averages give a target-state population contrast of 0.929. Loop-phase measurements establish phase selectivity, while pulse-area and common-mode amplitude scans characterize the operating regime and control sensitivity. These results provide direct time- and phase-domain access to sign-selective counterdiabatic interference in a programmable cyclic qutrit.

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Cite

BibTeXRIS
BibTeX
@misc{li2026time,
  title = {{Time- and phase-resolved emulation of sign-selective counterdiabatic dynamics in a superconducting qutrit}},
  author = {Yiwen Li and Luojia Xu and Xinsheng Tan and Yang Yu},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.08913},
  eprint = {2611.08913},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.08913},
}
RIS
TY  - UNPB
TI  - Time- and phase-resolved emulation of sign-selective counterdiabatic dynamics in a superconducting qutrit
AU  - Yiwen Li
AU  - Luojia Xu
AU  - Xinsheng Tan
AU  - Yang Yu
PY  - 2026
DA  - 2026/11/06
PB  - arXiv
DO  - 10.48550/arxiv.2611.08913
UR  - https://arxiv.org/abs/2611.08913
AB  - In cyclic three-level systems, phase-sensitive interference can convert a coupling-sign reversal into a population contrast, providing a controllable analogue of handedness. We emulate this mechanism in a superconducting transmon qutrit using two resonant single-photon drives and a phase-controlled effective two-photon drive. Effective loop phases Φ_L=+π/2 and Φ_R=−π/2, separated by π, reverse the auxiliary contribution to the dark--bright coupling, canceling the intrinsic nonadiabatic term for L and reinforcing it for R. Time-resolved trajectories reveal dark-pathway transfer for L and bright-manifold participation for R. Measured late-time averages give a target-state population contrast of 0.929. Loop-phase measurements establish phase selectivity, while pulse-area and common-mode amplitude scans characterize the operating regime and control sensitivity. These results provide direct time- and phase-domain access to sign-selective counterdiabatic interference in a programmable cyclic qutrit.
ER  -