Richard
Cleve
Berry, D. ., Childs, A. M., Cleve, R. ., Kothari, R. ., & Somma, R. . (2015). Simulating Hamiltonian dynamics with a truncated Taylor series. Physical Review Letters, 114, 090502. http://doi.org/10.1103/PhysRevLett.114.090502 (Original work published March 2015)
Berry, D. ., Childs, A. M., Cleve, R. ., Kothari, R. ., & Somma, R. . (2014). Exponential improvement in precision for simulating sparse Hamiltonians. Proceedings of the 46th ACM Symposium on Theory of Computing (STOC 2014), 283–292. http://doi.org/10.1145/2591796.2591854 (Original work published May 2014)