期刊
PHYSICAL REVIEW LETTERS
卷 126, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.043602
关键词
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资金
- China Postdoctoral Science Foundation [2018M631136]
- Natural Science Foundation of China [11804270]
- Japan Society for the Promotion of Science (BRIDGE Fellowship) [BR190501]
- Swedish Research Council [2019-03696]
- Knut and AliceWallenberg Foundation through the Wallenberg Centre for Quantum Technology (WACQT)
- National Science Foundation of China [11774284]
- NTT Research, Army Research Office (ARO) [W911NF-18-1-0358]
- Japan Science and Technology Agency (JST) (Q-LEAP program
- Japan Science and Technology Agency (JST) (CREST) [JPMJCR1676]
- Japan Society for the Promotion of Science (JSPS) (KAKENHI Grant) [JP20H00134]
- Japan Society for the Promotion of Science (JSPS) (JSPS-RFBR) [JPJSBP120194828]
- Asian Office of Aerospace Research and Development (AOARD)
- Foundational Questions Institute Fund (FQXi) [FQXi-IAF19-06]
- Vinnova [2019-03696] Funding Source: Vinnova
- Swedish Research Council [2019-03696] Funding Source: Swedish Research Council
This proposal presents tunable chiral bound states in a system consisting of superconducting giant atoms and a Josephson photonic-crystal waveguide, offering potential applications in experiments for realizing topological phase transitions and quantum simulations using superconducting circuits.
We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups. The chiral bound states arise due to interference in the nonlocal coupling of a giant atom to multiple points of the waveguide. The chirality can be tuned by changing either the atom-waveguide coupling or the external bias of the PCW. Furthermore, the chiral bound states can induce directional dipole-dipole interactions between multiple giant atoms coupling to the same waveguide. Our proposal is ready to be implemented in experiments with superconducting circuits, where it can be used as a tunable toolbox to realize topological phase transitions and quantum simulations.
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