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Dimension-adaptive machine learning-based quantum state reconstruction

Journal Article · · Quantum Machine Intelligence
 [1];  [1];  [2];  [3];  [1];  [4]
  1. Univ. of Illinois, Chicago, IL (United States)
  2. Arizona State Univ., Tempe, AZ (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Tulane Univ., New Orleans, LA (United States)
  4. Tulane Univ., New Orleans, LA (United States); US Army Research Laboratory (USARL), Adelphi, MD (United States)

Here, we introduce an approach for performing quantum state reconstruction on systems of n qubits using a machine learning-based reconstruction system trained exclusively on m qubits, where m ≥ n. This approach removes the necessity of exactly matching the dimensionality of a system under consideration with the dimension of a model used for training. We demonstrate our technique by performing quantum state reconstruction on randomly sampled systems of one, two, and three qubits using machine learning-based methods trained exclusively on systems containing at least one additional qubit. The reconstruction time required for machine learning-based methods scales significantly more favorably than the training time; hence this technique can offer an overall saving of resources by leveraging a single neural network for dimension-variable state reconstruction, obviating the need to train dedicated machine learning systems for each Hilbert space.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); US Army Research Office (ARO); US Army Research Laboratory (USARL)
Grant/Contract Number:
AC05-00OR22725; SC0012704
OSTI ID:
1928949
Journal Information:
Quantum Machine Intelligence, Journal Name: Quantum Machine Intelligence Journal Issue: 1 Vol. 5; ISSN 2524-4906
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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