Efficient Measurement of Quantum Dynamics via Compressive Sensing
Name
Shabani-2011-Efficient Measuremen.pdf
Size
754.5 KB
Format
Adobe PDF
Checksum (MD5)
fd14c57f174032e8f9c2f02cb94c751d
Author(s)
Shabani, A.
Kosut, R. L.
Mohseni, Masoud
Rabitz, H.
Broome, Matthew A.
Almeida, M. P.
White, A. G.
Date Issued
March 2011
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Shabani, A. et al. “Efficient Measurement of Quantum Dynamics via Compressive Sensing.” Physical Review Letters 106.10 (2011) © 2011 American Physical Society
Version
Final published version
Abstract
The resources required to characterize the dynamics of engineered quantum systems—such as quantum computers and quantum sensors—grow exponentially with system size. Here we adapt techniques from compressive sensing to exponentially reduce the experimental configurations required for quantum process tomography. Our method is applicable to processes that are nearly sparse in a certain basis and can be implemented using only single-body preparations and measurements. We perform efficient, high-fidelity estimation of process matrices of a photonic two-qubit logic gate. The database is obtained under various decoherence strengths. Our technique is both accurate and noise robust, thus removing a key roadblock to the development and scaling of quantum technologies.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.106.100401
