Using the J1-J2 Quantum Spin Chain as an Adiabatic Quantum Data Bus

Details Using the J1-J2 Quantum Spin Chain as an Adiabatic Quantum Data Bus Using the J1-J2 Quantum Spin Chain as an Adiabatic Quantum Data Bus

2012-04-06

arxiv.org/abs/1204.1382v4

Physics

Quantum Physics

14 pages, 11 figures, revisions made to add citations

Scientific paper

This paper investigates numerically a phenomenon which can be used to transport a single q-bit down a J1-J2 Heisenberg spin chain using a quantum adiabatic process. The motivation for investigating such processes comes from the idea that this method of transport could potentially be used as a means of sending data to various parts of a quantum computer made of artificial spins, and that this method could take advantage of the easily prepared ground state at the so called Majumdar-Ghosh point. We examine several annealing protocols for this process and find similar result for all of them. The annealing process works well up to a critical frustration threshold.

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