Measuring non-Markovianity of processes with controllable system-environment interaction Jian-Shun Tang, Chuan-Feng Li, Yu-Long Li, Xu-Bo Zou, Guang-Can Guo, Heinz-Peter Breuer, Elsi-Mari Laine and Jyrki Piilo EPL, 97 1 (2012) 10002 Published online: 03 January 2012 DOI: 10.1209/0295-5075/97/10002