Published December 2011 | Version v1
Journal article Metadata-only

Adaptive schemes for incomplete quantum process tomography

Creators

  • 1. NUS Graduate School for Integrative Sciences and Engineering, Singapore 117597 (Singapore)
  • 2. Centre for Quantum Technologies, National University of Singapore, Singapore 117543 (Singapore)
  • 3. Department of Physics, National University of Singapore, Singapore 117542 (Singapore)
  • 4. Department of Optics, Palacky University, 17. listopadu 12, CZ-77146 Olomouc (Czech Republic)

Description

We propose an iterative algorithm for incomplete quantum process tomography with the help of quantum state estimation. The algorithm, which is based on the combined principles of maximum likelihood and maximum entropy, yields a unique estimator for an unknown quantum process when one has less than a complete set of linearly independent measurement data to specify the quantum process uniquely. We apply this iterative algorithm adaptively in various situations and so optimize the amount of resources required to estimate a quantum process with incomplete data.

Additional details

Identifiers

DOI
10.1103/PhysRevA.84.062125;
arXiv
arXiv:1110.1202v1;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
84
Journal Issue
6
Journal Page Range
p. 062125-062125.9
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44053699
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ALGORITHMS; ENTROPY; ITERATIVE METHODS; MAXIMUM-LIKELIHOOD FIT; QUANTUM MECHANICS; QUANTUM STATES; TOMOGRAPHY
Descriptors DEC
CALCULATION METHODS; DIAGNOSTIC TECHNIQUES; MATHEMATICAL LOGIC; MATHEMATICAL SOLUTIONS; MECHANICS; NUMERICAL SOLUTION; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES

Optional Information

Notes
(c) 2011 American Institute of Physics