Physics – Quantum Physics
Scientific paper
2010-11-25
Phys. Rev. Lett. 106, 230402 (2011)
Physics
Quantum Physics
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.106.230402
Sharp quantum phase transitions typically require a large system with many particles. Here we show that for a frustrated fully-connected Ising spin network represented by trapped atomic ions, the competition between different spin orders leads to rich phase transitions whose sharpness scales exponentially with the number of spins. This unusual finite-size scaling behavior opens up the possibility of observing sharp quantum phase transitions in a system of just a few trapped ion spins.
Duan Lu-Ming
Lin Guin-Dar
Monroe Chris
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