



@article {1270,
	title = {Quantum Catalysis of Magnetic Phase Transitions in a Quantum Simulator},
	journal = {Physical Review Letters},
	volume = {111},
	year = {2013},
	month = {2013/9/5},
	abstract = {  We control quantum fluctuations to create the ground state magnetic phases of
a classical Ising model with a tunable longitudinal magnetic field using a
system of 6 to 10 atomic ion spins. Due to the long-range Ising interactions,
the various ground state spin configurations are separated by multiple
first-order phase transitions, which in our zero temperature system cannot be
driven by thermal fluctuations. We instead use a transverse magnetic field as a
quantum catalyst to observe the first steps of the complete fractal devil{\textquoteright}s
staircase, which emerges in the thermodynamic limit and can be mapped to a
large number of many-body and energy-optimization problems.
},
	doi = {10.1103/PhysRevLett.111.100506},
	url = {http://arxiv.org/abs/1303.6983v2},
	author = {Philip Richerme and Crystal Senko and Simcha Korenblit and Jacob Smith and Aaron Lee and Rajibul Islam and Wesley C. Campbell and Christopher Monroe}
}
