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  Objective Compressive Quantum Process Tomography

Teo, Y. S., Struchalin, G. I., Kovlakov, E. V., Ahn, D., Jeong, H., Straupe, S. S., et al. (2020). Objective Compressive Quantum Process Tomography. Physical Review A, 101(2): 022334. doi:10.1103/PhysRevA.101.022334.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-12BE-E Version Permalink: https://hdl.handle.net/21.11116/0000-0008-12BF-D
Genre: Journal Article

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 Creators:
Teo, Y. S.1, Author
Struchalin, G. I.1, Author
Kovlakov, E. V.1, Author
Ahn, D.1, Author
Jeong, H.1, Author
Straupe, S. S.1, Author
Kulik, S. P.1, Author
Leuchs, G.2, Author
Sanchez-Soto, L. L.3, Author
Affiliations:
1External Organizations, ou_persistent22              
2Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society, DE, ou_3164407              
3Quantumness, Tomography, Entanglement, and Codes, Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society, Staudtstraße 2, 91058 Erlangen, DE, ou_2364709              

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Free keywords: Quantum Physics, quant-ph
 Abstract: We present a compressive quantum process tomography scheme that fully
characterizes any rank-deficient completely-positive process with no a priori
information about the process apart from the dimension of the system on which
the process acts. It uses randomly-chosen input states and adaptive output von
Neumann measurements. Both entangled and tensor-product configurations are
flexibly employable in our scheme, the latter which naturally makes it
especially compatible with many-body quantum computing. Two main features of
this scheme are the certification protocol that verifies whether the
accumulated data uniquely characterize the quantum process, and a compressive
reconstruction method for the output states. We emulate multipartite scenarios
with high-order electromagnetic transverse modes and optical fibers to
positively demonstrate that, in terms of measurement resources, our
assumption-free compressive strategy can reconstruct quantum processes almost
equally efficiently using all types of input states and basis measurement
operations, operations, independent of whether or not they are factorizable
into tensor-product states.

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Language(s): eng - English
 Dates: 2019-11-142019-12-122020-01-292020-02-26
 Publication Status: Issued
 Pages: 7 pages, 4 figures
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1911.06122
DOI: 10.1103/PhysRevA.101.022334
 Degree: -

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Title: Physical Review A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
  Other : Phys. Rev. A
Source Genre: Journal
 Creator(s):
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 101 (2) Sequence Number: 022334 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2