Table 1 Comparison of this work (FLAME-2) and the original demonstration (FLAME-1)27.

From: Fast, noise-free atomic optical memory with 35-percent end-to-end efficiency

 

Internal efficiency ηint(0)[%]

End-to-end efficiency ηe2e(0)[%]

1/e lifetime τs [ns]

Noise photons ν[10−5]

FLAME-2 On-resonance

52.6 ± 0.8

34.7 ± 1.2

108 ± 2

2.6 ± 0.2

FLAME-1 On-resonance

22.0 ± 0.4

17.1 ± 0.3

82 ± 1

19 ± 1

FLAME-2 Off-resonance

39.8 ± 0.6

22.3 ± 0.9

113 ± 2

1.2 ± 0.2

FLAME-1 Off-resonance

32 ± 1

25.1 ± 0.8

86 ± 2

5.8 ± 0.4

  1. We quote the performance of on-resonance storage and off-resonance storage in both experiments.
  2. FLAME fast ladder memory.
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