Quantum Logic Gates in Optical Lattices
Abstract
We propose a new system for implementing quantum logic gates: neutral atoms trapped in a very far-off-resonance optical lattice. Pairs of atoms are made to occupy the same well by varying the polarization of the trapping lasers, and then a near-resonant electric dipole is induced by an auxiliary laser. A controlled-NOT can be implemented by conditioning the target atomic resonance on a resolvable level shift induced by the control atom. Atoms interact only during logical operations, thereby suppressing decoherence.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 1999
- DOI:
- 10.1103/PhysRevLett.82.1060
- arXiv:
- arXiv:quant-ph/9806021
- Bibcode:
- 1999PhRvL..82.1060B
- Keywords:
-
- Quantum Physics
- E-Print:
- Revised version, To appear in Phys. Rev. Lett. Three separate postscript figures