Engineering entanglement: The fast-approach phase gate

Dan Vager; Bilha Segev; Y. B. Band

doi:10.1103/PhysRevA.72.022325

Engineering entanglement: The fast-approach phase gate

Dan Vager, Bilha Segev, Y. B. Band

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Optimal-control techniques and a fast-approach scheme are used to implement a collisional controlled-phase gate in a model of cold atoms in an optical lattice, significantly reducing the gate time as compared to adiabatic evolution while maintaining high fidelity. Objective functionals are given for which optimal paths are obtained for evolution that yields a controlled-phase gate up to single-atom Rabi shifts. Furthermore, the fast-approach procedure is used to design a path to significantly increase the fidelity of nonadiabatic transport in a recent experiment. In addition, the entanglement power of phase gates is quantified.

Original language	English
Article number	022325
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	72
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.72.022325
State	Published - 1 Aug 2005

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.72.022325

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Engineering entanglement: The fast-approach phase gate

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