Fast quantum gates for neutral atoms

Details Fast quantum gates for neutral atoms Fast quantum gates for neutral atoms

2000-04-07

arxiv.org/abs/quant-ph/0004038v2

Physics

Quantum Physics

4 pages, 3 figures, final version, accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.85.2208

We propose several schemes for implementing a fast two-qubit quantum gate for neutral atoms with the gate operation time much faster than the time scales associated with the external motion of the atoms in the trapping potential. In our example, the large interaction energy required to perform fast gate operations is provided by the dipole-dipole interaction of atoms excited to low-lying Rydberg states in constant electric fields. A detailed analysis of imperfections of the gate operation is given.

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