Table 1 Decay times

From: Nonvolatile nuclear spin memory enables sensor-unlimited nanoscale spectroscopy of small spin clusters

Time

Typical value

Description

Influence

\(T_2^*\)

>1 s

Target spin-coherence time

Limits ultimate spectral resolution

\(T_2^{{\rm{sens}}}\)

688 ± 31 μs

Sensor spin-coherence time

Limits sensing time (i.e., target access)

\(T_1^{{\rm{sens}}}\)

6.3±0.6 ms

Sensor spin longitudinal-relaxation time

Affects target and memory coherence

\(T_2^{{\rm{mem}}}\)

8.6±1.3 ms

Memory spin-coherence time

Limits quantum storage time

\(T_1^{{\rm{mem}}}\)

260 ± 20 s

Memory spin longitudinal-relaxation time

Limits classical storage time

  1. Summary of relevant decay time constants for target, sensor, and memory spins. We give typical values in our experiments and describe their influence for in situ correlation spectroscopy