TY - JOUR AU - Minghui Xu AU - D. Tieri AU - C. Fine AU - James Thompson AU - Murray Holland BT - Physical Review Letters DA - 2014-10 DO - 10.1103/PhysRevLett.113.154101 PY - 2014 EP - 154101 T2 - Physical Review Letters TI - Synchronization of Two Ensembles of Atoms UR - http://link.aps.org/doi/10.1103/PhysRevLett.113.154101 VL - 113 SN - 0031-9007 ER -