Quantum memory in an effective Λ-type system using dynamic detuning control of a superconducting qubit pair

@misc{chang2026quantum,
  title = {{Quantum memory in an effective $Λ$-type system using dynamic detuning control of a superconducting qubit pair}},
  author = {Hsin Chang and Kai-I Chu and Ite A. Yu and Yen-Hsiang Lin and Yung-Fu Chen},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.34201},
  eprint = {2609.34201},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.34201},
}

TY  - UNPB
TI  - Quantum memory in an effective Λ-type system using dynamic detuning control of a superconducting qubit pair
AU  - Hsin Chang
AU  - Kai-I Chu
AU  - Ite A. Yu
AU  - Yen-Hsiang Lin
AU  - Yung-Fu Chen
PY  - 2026
DA  - 2026/09/28
PB  - arXiv
DO  - 10.48550/arxiv.2609.34201
UR  - https://arxiv.org/abs/2609.34201
AB  - We theoretically investigate quantum-light storage in an effective Λ-type system formed by a pair of tunable superconducting qubits coupled to a semi-infinite transmission line and separated by half a wavelength. The frequency detuning between the qubits directly couples the superradiant excited state and the subradiant metastable state. By adjusting the qubit detuning, the system exhibits a controllable spectral response accompanied by slow-light behavior. Dynamically controlling the detuning enables an incident quantum field to be mapped onto the subradiant collective state, stored as a long-lived excitation, and subsequently retrieved on demand. Our results establish the proposed system as a minimal and tunable quantum-memory architecture for scalable superconducting quantum networks.
ER  -