Adiabatic Passage with Spin Locking in Tm$^{3+}$:YAG

Details Adiabatic Passage with Spin Locking in Tm$^{3+}$:YAG Adiabatic Passage with Spin Locking in Tm$^{3+}$:YAG

2012-03-16

arxiv.org/abs/1203.3753v1

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

In low concentration Tm$^{3+}$:YAG, we observe efficient adiabatic rapid passage (ARP) of thulium nuclear spin on very long time scales, with flipping time much longer than $T_2$. Even with an optical oscillator strength as small as a few $10^{-8}$, optical preparation and detection enable us to work on a sample of about 10$^{10}$ ions. The impurity-doped crystal strongly differs from monoatomic solids where efficient ARP at slow rate was observed in NMR early days. Explanation in terms of isoentropic reversible thermodynamic transformation does not apply in the present experiment. Instead, this feature can be understood as a spin locking effect.

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