All-Optical Quantum Information Processing Using Rydberg Gates
Abstract
In this Letter, we propose a hybrid scheme to implement a photonic controlled-z (CZ) gate using photon storage in highly excited Rydberg states, which controls the effective photon-photon interaction using resonant microwave fields. Our scheme decouples the light propagation from the interaction and exploits the spatial properties of the dipole blockade phenomenon to realize a CZ gate with minimal loss and mode distortion. By excluding the coupling efficiency, fidelities exceeding 95% are achievable and are found to be mainly limited by motional dephasing and the finite lifetime of the Rydberg levels.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2014
- DOI:
- 10.1103/PhysRevLett.112.040501
- arXiv:
- arXiv:1309.7933
- Bibcode:
- 2014PhRvL.112d0501P
- Keywords:
-
- 03.67.Lx;
- 32.80.Rm;
- 42.50.Ex;
- 71.36.+c;
- Quantum computation;
- Multiphoton ionization and excitation to highly excited states;
- Optical implementations of quantum information processing and transfer;
- Polaritons;
- Quantum Physics;
- Physics - Atomic Physics
- E-Print:
- 4 figures