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EPR pairing dynamics in Hubbard model with resonant U.


ABSTRACT: We study the dynamics of the collision between two fermions in Hubbard model with on-site interaction strength U. The exact solution shows that the scattering matrix for two-wavepacket collision is separable into two independent parts, operating on spatial and spin degrees of freedom, respectively. The S-matrix for spin configuration is equivalent to that of Heisenberg-type pulsed interaction with the strength depending on U and relative group velocity vr. This can be applied to create distant EPR pair, through a collision process for two fermions with opposite spins in the case of |vr/U| = 1, without the need for temporal control and measurement process. Multiple collision process for many particles is also discussed.

SUBMITTER: Zhang XZ 

PROVIDER: S-EPMC4700455 | biostudies-other | 2016

REPOSITORIES: biostudies-other

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