Adiabatic passage with spin locking in Tm3+:YAG

Maria Florencia Pascual-Winter (1) , Robert-Christopher Tongning (1) , Romain Lauro (1) , A. Louchet-Chauvet (1) , Thierry Chaneliere (1) , Jean-Louis Le Gouët (1)

1 LAC - Laboratoire Aimé Cotton

In low-concentration Tm 3+ :YAG, we observe efficient adiabatic rapid passage (ARP) of thulium nuclear spin over flipping times much longer than T 2. Efficient ARP with long flipping time has been observed in monoatomic solids for decades and has been analyzed in terms of spin temperature and of the thermodynamic equilibrium of a coupled spin ensemble. In low-concentration impurity-doped crystals the spin temperature concept may be questioned. A single spin model should be preferred since the impurity ions are weakly coupled together but interact with the numerous off-resonant matrix ions that originate the spin-spin relaxation. The experiment takes place in the context of quantum information investigation, involving impurity-doped crystals, spin hyperpolarization by optical pumping, and optical detection of the spin evolution.

Domaines: Physique Quantique [quant-ph]

Maria Florencia Pascual-Winter, Robert-Christopher Tongning, Romain Lauro, A. Louchet-Chauvet, Thierry Chaneliere, et al.. Adiabatic passage with spin locking in Tm3+:YAG. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 86 (6), ⟨10.1103/PhysRevB.86.064301⟩. ⟨hal-02106706⟩