Information free quantum bus for generating stabiliser states

Details Information free quantum bus for generating stabiliser states Information free quantum bus for generating stabiliser states

2005-11-09

arxiv.org/abs/quant-ph/0511084v2

Quant. Inf. Proc. 6(4):229 (2007)

Physics

Quantum Physics

7 pages, 3 figures: substantial changes, accepted in quant. inf. proc. Added details for physical bus scheme using coherent el

Scientific paper

10.1007/s11128-007-0055-4

Efficient generation of spatially delocalised entangled states is at the heart of quantum information science. Generally flying qubits are proposed for long range entangling interactions, however here we introduce a bus-mediated alternative for this task. Our scheme permits efficient and flexible generation of deterministic two-qubit operator measurements and has links to the important concepts of mode-entanglement and repeat-until-success protocols. Importantly, unlike flying qubit protocols, our bus particle never contains information about the individual quantum states of the particles, hence is information-free.

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