Table 1 Extracted qubit parameters

From: Inductively shunted transmons exhibit noise insensitive plasmon states and a fluxon decay exceeding 3 hours

 

EJ/h

EC/h

EL/h

g0/(2π)

T1

T2

νp01

δνp01

 

(GHz)

(GHz)

(GHz)

(MHz)

(μs)

(μs)

(GHz)

(MHz)

A

29.93

0.164

0.56

107.7

15.5

13.0

6.122

5.1

B

31.13

0.165

0.56

119.6

21.0

27.8

6.296

5.6

C

33.34

0.170

1.60

86.3

17.4

22.6

6.720

40.0

  1. The reported coherence times are measured at φext = 0. Echo experiments on device C did not improve the T2 time, which suggests that low-frequency flux noise is not the dominant limitation at zero flux. δνp01 refers to the measured qubit dispersion over the full flux range.
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