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Quantum gates with neutral atoms: Controlling collisional interactions in time dependent traps

T. Calarco·E. A. Hinds·D. Jaksch·J. Schmiedmayer·J. I. Cirac·P. Zoller
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Abstract

We theoretically study specific schemes for performing a fundamental two-qubit quantum gate via controlled atomic collisions by switching microscopic potentials. In particular we calculate the fidelity of a gate operation for a configuration where a potential barrier between two atoms is instantaneously removed and restored after a certain time. Possible implementations could be based on microtraps created by magnetic and electric fields, or potentials induced by laser light.

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T. Calarco, E. A. Hinds, D. Jaksch, J. Schmiedmayer, J. I. Cirac, P. Zoller. 1999-05-20. Quantum gates with neutral atoms: Controlling collisional interactions in time dependent traps. https://doi.org/10.1103/physreva.61.022304

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