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Trapped Ion Quantum Computing

Continuous-variable quantum process tomography with squeezed-state probes

arXiv
Authors: Jaromir Fiurasek

Year

2015

Paper ID

7927

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

N/A

Abstract

We propose a procedure for tomographic characterization of continuous variable quantum operations which employs homodyne detection and single-mode squeezed probe states with a fixed degree of squeezing and anti-squeezing and a variable displacement and orientation of squeezing ellipse. Density matrix elements of a quantum process matrix in Fock basis can be estimated by averaging well behaved pattern functions over the homodyne data. We show that this approach can be straightforwardly extended to characterization of quantum measurement devices. The probe states can be mixed, which makes the proposed procedure feasible with current technology.

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  • We propose a procedure for tomographic characterization of continuous variable quantum operations which employs homodyne detection and single-mode squeezed probe states with a...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1508.01711 [2] arXiv https://arxiv.org/abs/1508.01711 [3] Publisher https://arxiv.org/abs/1508.01711

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