Implementing universal quantum gates in coupled cavities

Details Implementing universal quantum gates in coupled cavities Implementing universal quantum gates in coupled cavities

2007-07-26

arxiv.org/abs/0707.3946v1

Am. Inst. of Phys. Vol. 963, 763 (2007)

Physics

Quantum Physics

Accepted to appear in the AIP proceedings of the "Quantum Control and Light-Matter Interactions: Recent Computational and Theo

Scientific paper

10.1063/1.2836195

We study a linear array of coupled cavities interacting with two level systems and show how to construct individually addressable qubits in this system from the long-lived atom-photon excitations (polaritons) at each site. We derive the system dynamics and show that is described by an XY Hamiltonian. We proceed by showing how to implement non-local quantum gates and show that combined with the inherent ability for individual addressing, universal quantum computation is possible in this system. We finally discuss the prospects for experimental implementation using various technologies involving dopants as atoms, quantum dots or Cooper pair boxes.

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