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Spectroscopy of Energy-Level Splitting between Two Macroscopic Quantum States of Charge Coherently Superposed by Josephson Coupling
Abstract
We study Cooper-pair tunneling in a voltage-biased superconducting single-electron transistor under microwave irradiation. By tracing the peak positions of a photon-assisted Josephson-quasiparticle current as a function of the microwave frequency, we observe an energy-dispersion curve in the quasicharge space. This shows that energy-level splitting occurs between two macroscopic quantum states of charge coherently superposed by Josephson coupling.
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Citations
Cites
Tunneling Between Superconductors
Ambegaokar, V., & Baratoff, A. (1963) · Physical Review Letters · doi:10.1103/physrevlett.10.486 · Cited by 2,195
Cited by
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Coherent control of macroscopic quantum states in a single-Cooper-pair box
Nakamura, Y., Pashkin, Y. A., & Tsai, J. S. (1999) · Nature · doi:10.1038/19718 · Cited by 2,380
Self-citationSingle-electron devices and their applications
Likharev, K. K. (1999) · Proceedings of the IEEE · doi:10.1109/5.752518 · Cited by 1,453
Molecular electronics: Some views on transport junctions and beyond
Joachim, C., & Ratner, M. A. (2005) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0500075102 · Cited by 522
Approaching perfect microwave photodetection in circuit QED
Peropadre, B., Romero, G., Johansson, G., Wilson, C. M., Solano, E., & García-Ripoll, J. J. (2011) · Physical Review A · doi:10.1103/physreva.84.063834 · Cited by 108
Metadata
- Authors
- Nakamura, Y., Chen, C. D., & Tsai, J. S.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1997-09-22
- Volume
- 79
- Issue
- 12
- Pages
- 2328-2331
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2023727353
- Cited by
- 206
- References
- 1
- FWCI
- 15.22
- Type
- journal article
- Language
- en
- Open access
- closed
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- Nakamura, Y., Chen, C. D., & Tsai, J. S. (1997). Spectroscopy of Energy-Level Splitting between Two Macroscopic Quantum States of Charge Coherently Superposed by Josephson Coupling. Physical Review Letters. https://doi.org/10.1103/physrevlett.79.2328
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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