Topologically decoherence-protected qubits with trapped ions

Details Topologically decoherence-protected qubits with trapped ions Topologically decoherence-protected qubits with trapped ions

2007-03-29

arxiv.org/abs/quant-ph/0703270v2

Physical Review Letters 99, 2 (13/07/2007) 020503

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevLett.99.020503

We show that trapped ions can be used to simulate a highly symmetrical Hamiltonian with eingenstates naturally protected against local sources of decoherence. This Hamiltonian involves long range coupling between particles and provides a more efficient protection than nearest neighbor models discussed in previous works. Our results open the perspective of experimentally realizing in controlled atomic systems, complex entangled states with decoherence times up to nine orders of magnitude longer than isolated quantum systems.

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