Extracting an arbitrary relative phase from a multiqubit two-component entangled state
arXiv:quant-ph/0505201 · doi:10.1103/PhysRevA.72.014306
Abstract
We show that an arbitrary relative phase can be extracted from a multiqubit two-component (MTC) entangled state by local Hadamard transformations and measurements along a single basis only. In addition, how to distinguish a MTC entangled state with an arbitrary entanglement degree and relative phase from a class of multiqubit mixed states is discussed.
4 pages, REVTEX, accepted by Physical Review A
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