Fast quantum gates for neutral atoms

By Dieter Jaksch, J. I. Cirac, Peter Zoller, S. Rolston, R. Côté, Mikhail D. Lukin. Physical Review Letters, 2000

1,198 citations recorded by the source corpus.

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.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/6f4b36966488d22e79fa216812ed76af70182622

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Colloquium: Trapping and manipulating photon states in atomic ensembles (2003, background): “The resulting energy shift scales as U;`2/R3, where ` is the dipole moment and R is the separation between atoms, and this interaction can be used to entangle atoms (Jaksch et al., 2000).”
An elementary quantum network of single atoms in optical cavities (2012, background): “[17] Jaksch, D.”
Observation of Rydberg blockade between two atoms (2008, background): “Furthermore, dipolar interactions between highly excited atoms have been proposed as a mechanism for ‘Rydberg blockade&rsquo”
Analysis of a quantum logic device based on dipole-dipole interactions of optically trapped Rydberg atoms (2005, methodology): “The protocol for a conditional phase gate is then [21]: 1) excite atom 1(control atom) from |b〉 → |r〉 with a π pulse, 2) excite atom 2(target atom) from |b〉 → |r〉 → |b〉 with a 2π pulse, and 3) transfer atom 1 back down from |r〉 → |b〉 with a π pulse.”
Quantum computing with atomic qubits and Rydberg interactions: progress and challenges (2016, methodology): “The blockade gate protocol [32] is based on the appearance of a π phase shift after a resonant Rabi pulse with area p 2 .”