Zhang Jiang, Marco Piani, Carlton M. Caves. Ancilla models for quantum operations: for what unitaries does the ancilla state have to be physical?. Quantum Information Processing, 12(5):1999-2017, 2013. [doi]
@article{JiangPC13-0,
title = {Ancilla models for quantum operations: for what unitaries does the ancilla state have to be physical?},
author = {Zhang Jiang and Marco Piani and Carlton M. Caves},
year = {2013},
doi = {10.1007/s11128-012-0500-x},
url = {http://dx.doi.org/10.1007/s11128-012-0500-x},
researchr = {https://researchr.org/publication/JiangPC13-0},
cites = {0},
citedby = {0},
journal = {Quantum Information Processing},
volume = {12},
number = {5},
pages = {1999-2017},
}