Abstract
The possibility of using strongly and continuously interacting spins for quantum computation has recently been discussed. Here we present a simple optical scheme that achieves this goal while avoiding the drawbacks of earlier proposals. We employ a third state, accessed by a classical laser field, to create an effective barrier to information transfer. The mechanism proves to be highly efficient both for continuous and pulsed laser modes; moreover, it is very robust, tolerating high decay rates for the excited states. The approach is applicable to a broad range of systems, in particular, dense structures such as solid-state self-assembled (e.g., molecular) devices. Importantly, there are existing structures upon which "first-step" experiments could be immediately performed.
Original language | English |
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Article number | 060305 |
Number of pages | 4 |
Journal | Physical Review A |
Volume | 70 |
Issue number | 6 |
DOIs | |
Publication status | Published - Dec 2004 |