Control-limited perfect state transfer, quantum stochastic resonance and many-body entangling gate in imperfect qubit registers

Details Control-limited perfect state transfer, quantum stochastic resonance and many-body entangling gate in imperfect qubit registers Control-limited perfect state transfer, quantum stochastic resonance and many-body entangling gate in imperfect qubit registers

2008-01-31

arxiv.org/abs/0801.4930v2

Phys. Rev. A 77, 062337 (2008)

Physics

Quantum Physics

10 pages, 9 figures, RevTeX4

Scientific paper

10.1103/PhysRevA.77.062337

We propose a protocol for perfect quantum state transfer that is resilient to a broad class of realistic experimental imperfections, including noise sources that could be modelled either as independent Markovian baths or as certain forms of spatially correlated environments. We highlight interesting connections between the fidelity of state transfer and quantum stochastic resonance effects. The scheme is flexible enough to act as an effective entangling gate for the generation of genuine multipartite entanglement in a control-limited setting. Possible experimental implementations using superconducting qubits are also briefly discussed.

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