Suppressing decoherence of quantum algorithms by jump codes

Details Suppressing decoherence of quantum algorithms by jump codes Suppressing decoherence of quantum algorithms by jump codes

2005-06-05

arxiv.org/abs/quant-ph/0506037v1

Eur. Phys. J. D 36, 241-248 (2005)

Physics

Quantum Physics

Scientific paper

10.1140/epjd/e2005-00252-0

The stabilizing properties of one-error correcting jump codes are explored under realistic non-ideal conditions. For this purpose the quantum algorithm of the tent-map is decomposed into a universal set of Hamiltonian quantum gates which ensure perfect correction of spontaneous decay processes under ideal circumstances even if they occur during a gate operation. An entanglement gate is presented which is capable of entangling any two logical qubits of different one-error correcting code spaces. With the help of this gate simultaneous spontaneous decay processes affecting physical qubits of different code spaces can be corrected and decoherence can be suppressed significantly.

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