Quantum computing with incoherent resources and quantum jumps

Details Quantum computing with incoherent resources and quantum jumps Quantum computing with incoherent resources and quantum jumps

2011-11-05

arxiv.org/abs/1111.1319v1

Phys. Rev. Lett. 108, 170501 (2012)

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.108.170501

Spontaneous emission and the inelastic scattering of photons are two natural processes usually associated with decoherence and the reduction in the capacity to process quantum information. Here we show that when suitably detected, these photons are sufficient to build all the fundamental blocks needed to perform quantum computation in the emitting qubits while protecting them from deleterious dissipative effects. We exemplify by showing how to teleport an unknown quantum state and how to efficiently prepare graph states for the implementation of measurement-based quantum computation.

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