Controlling the Spontaneous Emission of a Superconducting Transmon Qubit
Open accessAbstract
We present a detailed characterization of coherence in seven transmon qubits in a circuit QED architecture. We find that spontaneous emission rates are strongly influenced by far off-resonant modes of the cavity and can be understood within a semiclassical circuit model. A careful analysis of the spontaneous qubit decay into a microwave transmission-line cavity can accurately predict the qubit lifetimes over 2 orders of magnitude in time and more than an octave in frequency. Coherence times T1 and T_{2};{*} of more than a microsecond are reproducibly demonstrated.
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The accumulation of physical errors prevents the execution of large-scale algorithms in current quantum computers.
“The accumulation of physical errors1–3 prevents the execution of large-scale algorithms in current quantum computers.”
From High-threshold and low-overhead fault-tolerant quantum memory (2024) · cites this paper as [3]
The discussion on p. 1 calls limited coherence the most important challenge in developing a superconducting quantum computer, and p. 4 says relaxation becomes important as circuits grow more complicated. It does not establish that accumulated physical errors prevent large-scale algorithms on current quantum computers generally. (LLM, conf=0.84)
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Self-citation
- Authors
- Houck, A. A., Schreier, J. A., Johnson, B. R., Chow, J. M., Koch, J., Gambetta, J. M., Schuster, D. I., Frunzio, L., Devoret, M. H., Girvin, S. M., & Schoelkopf, R. J.
- Affiliations
- Yale University (US)
- University of Waterloo (CA)
- ORCID
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-08-21
- Volume
- 101
- Issue
- 8
- Pages
- 080502-080502
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1992217095
- Cited by
- 501
- References
- 26
- Citations by year
- 2026: 20 · 2025: 41 · 2024: 40 · 2023: 53 · 2022: 32 · 2021: 29 · 2020: 28 · 2019: 24 · 2018: 21 · 2017: 26 · 2016: 20 · 2015: 29 · 2014: 17 · 2013: 23 · 2012: 20
- FWCI
- 40.70
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Keywords
- transmon qubits, spontaneous emission, superconducting qubits, circuit quantum electrodynamics, qubit coherence, qubit lifetime
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