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Thermal and Residual Excited-State Population in a 3D Transmon Qubit
Open accessAbstract
Remarkable advancements in coherence and control fidelity have been achieved in recent years with cryogenic solid-state qubits. Nonetheless, thermalizing such devices to their milliKelvin environments has remained a long-standing fundamental and technical challenge. In this context, we present a systematic study of the first-excited-state population in a 3D transmon superconducting qubit mounted in a dilution refrigerator with a variable temperature. Using a modified version of the protocol developed by Geerlings et al., we observe the excited-state population to be consistent with a Maxwell-Boltzmann distribution, i.e., a qubit in thermal equilibrium with the refrigerator, over the temperature range 35-150 mK. Below 35 mK, the excited-state population saturates at approximately 0.1%. We verified this result using a flux qubit with ten times stronger coupling to its readout resonator. We conclude that these qubits have effective temperature T(eff)=35 mK. Assuming T(eff) is due solely to hot quasiparticles, the inferred qubit lifetime is 108 μs and in plausible agreement with the measured 80 μs.
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Tunneling Between Superconductors
Ambegaokar, V., & Baratoff, A. (1963) · Physical Review Letters · doi:10.1103/physrevlett.10.486 · Cited by 2,195
Superconducting quantum circuits at the surface code threshold for fault tolerance
Barends, R., Kelly, J., Megrant, A., Veitia, A., Sank, D., Jeffrey, E., White, T. C., Mutus, J., Fowler, A. G., Campbell, B., et al. (2014) · Nature · doi:10.1038/nature13171 · Cited by 1,733
Devoret, M. H., Martinis, J. M., & Clarke, J. (1985) · Physical Review Letters · doi:10.1103/physrevlett.55.1908 · Cited by 454
Computing prime factors with a Josephson phase qubit quantum processor
Lucero, E., Barends, R., Chen, Y., Kelly, J., Mariantoni, M., Megrant, A., O’Malley, P., Sank, D., Vainsencher, A., Wenner, J., et al. (2012) · Nature Physics · doi:10.1038/nphys2385 · Cited by 311
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
Cited by
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
Self-citationThe 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
Self-citationPerspectives of quantum annealing: methods and implementations
Hauke, P., Katzgraber, H. G., Lechner, W., Nishimori, H., & Oliver, W. D. (2020) · Reports on Progress in Physics · doi:10.1088/1361-6633/ab85b8 · Cited by 507
Self-citationQuantum memory with millisecond coherence in circuit QED
Reagor, M., Pfaff, W., Axline, C., Heeres, R. W., Ofek, N., Sliwa, K., Holland, E., Wang, C., Blumoff, J., Chou, K., et al. (2016) · Physical Review B · doi:10.1103/physrevb.94.014506 · Cited by 376
Impact of ionizing radiation on superconducting qubit coherence
Vepsäläinen, A. P., Karamlou, A. H., Orrell, J. L., Dogra, A. S., Loer, B., Vasconcelos, F., Kim, D. K., Melville, A. J., Niedzielski, B. M., Yoder, J. L., et al. (2020) · Nature · doi:10.1038/s41586-020-2619-8 · Cited by 230
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Metadata
- Authors
- Jin, X. Y., Kamal, A., Sears, A. P., Gudmundsen, T., Hover, D., Miloshi, J., Slattery, R., Yan, F., Yoder, J., Orlando, T. P., Gustavsson, S., & Oliver, W. D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2015-06-15
- Volume
- 114
- Issue
- 24
- Pages
- 240501-240501
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1819886047
- Cited by
- 177
- References
- 5
- FWCI
- 12.83
- Type
- journal article
- Language
- en
- Open access
- green
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- Jin, X. Y., Kamal, A., Sears, A. P., Gudmundsen, T., Hover, D., Miloshi, J., Slattery, R., Yan, F., Yoder, J., Orlando, T. P., Gustavsson, S., & Oliver, W. D. (2015). Thermal and Residual Excited-State Population in a 3D Transmon Qubit. Physical Review Letters. https://doi.org/10.1103/physrevlett.114.240501
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