Banchi, L;
Bayat, A;
Verrucchi, P;
Bose, S;
(2011)
Nonperturbative Entangling Gates between Distant Qubits Using Uniform Cold Atom Chains.
PHYS REV LETT
, 106
(14)
, Article 140501. 10.1103/PhysRevLett.106.140501.
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Abstract
We propose a new fast scalable method for achieving a two-qubit entangling gate between arbitrary distant qubits in a network by exploiting dispersionless propagation in uniform chains. This is achieved dynamically by switching on a strong interaction between the qubits and a bus formed by a nonengineered chain of interacting qubits. The quality of the gate scales very efficiently with qubit separations. Surprisingly, a sudden switching of the couplings is not necessary. Moreover, our gate mechanism works for multiple gate operations without resetting the bus. We propose a possible experimental realization in cold atoms trapped in optical lattices and near field Fresnel trapping potentials.
| Type: | Article |
|---|---|
| Title: | Nonperturbative Entangling Gates between Distant Qubits Using Uniform Cold Atom Chains |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.106.140501 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.106.140501 |
| Language: | English |
| Additional information: | © 2011 American Physical Society |
| Keywords: | MOTT INSULATOR, CONTROLLED COLLISIONS, QUANTUM, IONS, ENTANGLEMENT, TRANSITION, SUPERFLUID, FIDELITY, GAS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1316998 |
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