TY  - RPRT
TI  - Effective quantum spin systems with trapped ions.
AU  - D Porras
AU  - J I Cirac
PY  - 2004
DO  - 10.1103/physrevlett.92.207901
UR  - https://pubmed.ncbi.nlm.nih.gov/15169383/
ID  - 15169383
ER  -