TY - JOUR A1 - Felicetti, S. A1 - Pedernales, J. S. A1 - Egusquiza, I. L. A1 - Romero, G. A1 - Lamata, L. A1 - Braak, Daniel A1 - Solano, E. T1 - Spectral collapse via two-phonon interactions in trapped ions T2 - Physical Review A Y1 - 2015 UR - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/61656 SN - 1050-2947 SN - 1094-1622 VL - 92 IS - 3 SP - 033817 PB - American Physical Society (APS) ER -