Topologically decoherence-protected qubits with trapped ions.
We show that trapped ions can be used to simulate a highly symmetrical Hamiltonian with eigenstates 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 9 orders of magnitude longer than isolated quantum systems.
Laboratoire Matériaux et Phénomènes Quantiques, CNRS UMR 7162, Université Denis Diderot, 2 Place Jussieu, 75005 Paris, France.
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P
Milman
W
W
Maineult
S
S
Guibal
L
L
Guidoni
B
B
Douçot
L
L
Ioffe
T
T
Coudreau