Universal quantum computer from a quantum magnet

作者:Cai Jianming*; Miyake Akimasa; Duer Wolfgang; Briegel Hans J
来源:Physical Review A, 2010, 82(5): 052309.
DOI:10.1103/PhysRevA.82.052309

摘要

We show that a local Hamiltonian of spin-3/2 particles with only two-body nearest-neighbor Affleck-Kennedy-Lieb-Tasaki and exchange-type interactions has a unique ground state, which can be used to implement universal quantum computation merely with single-spin measurements. We prove that the Hamiltonian is gapped, independent of the system size. Our result provides a further step toward utilizing systems with condensed-matter-type interactions for measurement-based quantum computation.

  • 出版日期2010-11-15