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Coherence and decay of higher energy levels of a superconducting transmon qubit

Abstract:

We present measurements of coherence and successive decay dynamics of higher energy levels of a superconducting transmon qubit. By applying consecutive π pulses for each sequential transition frequency, we excite the qubit from the ground state up to its fourth excited level and characterize the decay and coherence of each state. We find the decay to proceed mainly sequentially, with relaxation times in excess of 20  μs for all transitions. We also provide a direct measurement of the charge d...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.114.010501

Authors


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
114
Issue:
1
Pages:
010501
Publication date:
2015-01-06
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Pubs id:
pubs:505231
UUID:
uuid:089655cf-210f-490e-8cf7-80a2d39381a2
Local pid:
pubs:505231
Source identifiers:
505231
Deposit date:
2016-06-17

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