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Superconducting qubit in a waveguide cavity with a coherence time approaching 0.1 ms
Open accessAbstract
We report a superconducting artificial atom with a coherence time of ${T}_{2}^{*}=92$ $\ensuremath{\mu}$s and energy relaxation time ${T}_{1}=70$ $\ensuremath{\mu}$s. The system consists of a single Josephson junction transmon qubit on a sapphire substrate embedded in an otherwise empty copper waveguide cavity whose lowest eigenmode is dispersively coupled to the qubit transition. We attribute the factor of four increase in the coherence quality factor relative to previous reports to device modifications aimed at reducing qubit dephasing from residual cavity photons. This simple device holds promise as a robust and easily produced artificial quantum system whose intrinsic coherence properties are sufficient to allow tests of quantum error correction.
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Cites
Circuit quantum electrodynamics in the ultrastrong-coupling regime
Niemczyk, T., Deppe, F., Huebl, H., Menzel, E. P., Hocke, F., Schwarz, M. J., Garcia-Ripoll, J. J., Zueco, D., Hümmer, T., Solano, E., et al. (2010) · Nature Physics · doi:10.1038/nphys1730 · Cited by 1,324
Protecting superconducting qubits from radiation
Córcoles, A. D., Chow, J. M., Gambetta, J. M., Rigetti, C., Rozen, J. R., Keefe, G. A., Beth Rothwell, M., Ketchen, M. B., & Steffen, M. (2011) · Applied Physics Letters · doi:10.1063/1.3658630 · Cited by 193
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Cited by
Superconducting Circuits for Quantum Information: An Outlook
Devoret, M. H., & Schoelkopf, R. J. (2013) · Science · doi:10.1126/science.1231930 · Cited by 2,114
Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
Xiang, Z.-L., Ashhab, S., You, J. Q., & Nori, F. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.623 · Cited by 1,514
Superconducting Qubits: Current State of Play
Kjaergaard, M., Schwartz, M. E., Braumüller, J., Krantz, P., Wang, J. I.-J., Gustavsson, S., & Oliver, W. D. (2020) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031119-050605 · Cited by 1,544
Coherent Josephson Qubit Suitable for Scalable Quantum Integrated Circuits
Barends, R., Kelly, J., Megrant, A., Sank, D., Jeffrey, E., Chen, Y., Yin, Y., Chiaro, B., Mutus, J., Neill, C., et al. (2013) · Physical Review Letters · doi:10.1103/physrevlett.111.080502 · Cited by 779
The flux qubit revisited to enhance coherence and reproducibility
Yan, F., Gustavsson, S., Kamal, A., Birenbaum, J., Sears, A. P., Hover, D., Gudmundsen, T. J., Rosenberg, D., Samach, G., Weber, S., et al. (2016) · Nature Communications · doi:10.1038/ncomms12964 · Cited by 587
Metadata
- Authors
- Rigetti, C., Gambetta, J. M., Poletto, S., Plourde, B. L. T., Chow, J. M., Córcoles, A. D., Smolin, J. A., Merkel, S. T., Rozen, J. R., Keefe, G. A., Rothwell, M. B., Ketchen, M. B., & Steffen, M.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2012-09-24
- Volume
- 86
- Issue
- 10
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W180510765
- Cited by
- 584
- References
- 2
- FWCI
- 56.36
- Type
- journal article
- Language
- en
- Open access
- green
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- Rigetti, C., Gambetta, J. M., Poletto, S., Plourde, B. L. T., Chow, J. M., Córcoles, A. D., Smolin, J. A., Merkel, S. T., Rozen, J. R., Keefe, G. A., Rothwell, M. B., Ketchen, M. B., & Steffen, M. (2012). Superconducting qubit in a waveguide cavity with a coherence time approaching 0.1 ms. Physical Review B. https://doi.org/10.1103/physrevb.86.100506
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