Zeno effect for quantum computation and control

Details Zeno effect for quantum computation and control Zeno effect for quantum computation and control

2011-04-28

arxiv.org/abs/1104.5507v2

Physics

Quantum Physics

Significant modifications, including a new author. To appear in PRL

Scientific paper

It is well known that the quantum Zeno effect can protect specific quantum states from decoherence by using projective measurements. Here we combine the theory of weak measurements with stabilizer quantum error correction and detection codes. We derive rigorous performance bounds which demonstrate that the Zeno effect can be used to protect appropriately encoded arbitrary states to arbitrary accuracy, while at the same time allowing for universal quantum computation or quantum control.

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