Optimal quantum state reconstruction for cold trapped ions

Details Optimal quantum state reconstruction for cold trapped ions Optimal quantum state reconstruction for cold trapped ions

2008-05-22

arxiv.org/abs/0805.3496v1

Physics

Quantum Physics

Accepted for publication in Phys. Rev. A as Rap. Comm

Scientific paper

10.1103/PhysRevA.77.060303

We study the physical implementation of an optimal tomographic reconstruction scheme for the case of determining the state of a multi-qubit system, where trapped ions are used for defining qubits. The protocol is based on the use of mutually unbiased measurements and on the physical information described in H. H\"{a}ffner \emph{et. al} [Nature \textbf{438}, 643-646 (2005)]. We introduce the concept of physical complexity for different types of unbiased measurements and analyze their generation in terms of one and two qubit gates for trapped ions.

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