Table 1 Summary of fitted T₂ values, stretch exponents c, fit quality (R2), and number of averages (N_avg) for dynamical decoupling sequences with varying numbers of π-pulses N

N (π-pulses)

T₂ (ns) ± SD

Stretch exponent c ± SD

R2

N_avg (× 10³)

1

45 ± 5

0.90 ± 0.13

0.862

40

2

68 ± 5

1.11 ± 0.15

0.908

40

4

136 ± 3

1.93 ± 0.15

0.973

40

8

227 ± 2

2.09 ± 0.08

0.993

280

16

384 ± 4

2.07 ± 0.09

0.991

840

32

644 ± 10

1.93 ± 0.10

0.982

600

64

1069 ± 23

1.87 ± 0.11

0.979

560

128

2032 ± 48

2.39 ± 0.17

0.974

2000

256

3391 ± 35

2.40 (fixed)

0.870

2000

512

5885 ± 106

2.40 (fixed)

0.810

3480

1024

11871 ± 183

2.40 (fixed)

0.723

3660