Economical standard quantum process tomography

Details Economical standard quantum process tomography Economical standard quantum process tomography

2010-11-30

arxiv.org/abs/1011.6443v2

Physics

Quantum Physics

This paper has been withdrawn by the athour due to a more general but simple version of this topic can be constructed

Scientific paper

Recently, Bendersky \emph{et al.} developed a method to complete the task of characterizing an arbitrary $\chi$ matrix element in a scalable way, Phys. Rev. Lett. Vol. \textbf{100}, 190403(2008), where an auxiliary system was needed. In present work, we shall show that the same task can also be completed within the scheme of standard quantum process tomography (SQPT) where there is no requirement for ancilla. Our method depends on two observations: With the elaborately chosen operators basis, the SQPT may have an economical form where a single run of experiment, in which we measure the expectation value of a chosen operator in the outport of the quantum channel with a known input, is sufficient to characterize a selected $\chi$ matrix element; With the progress recently achieved in quantum entanglement detection, we also find that the number of the experimental settings to realize the experiment for the selected $\chi$ matrix element does not exceed 2N for the N-qubits system. For practice, our scheme can be applied for the cases where the controlled two-body interaction is neither available nor desirable.

Affiliated with

Also associated with

No associations

Rating

Economical standard quantum process tomography does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Economical standard quantum process tomography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Economical standard quantum process tomography will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-444563