Operationally Invariant Measure of the Distance between Quantum States by Complementary Measurements
- Author(s)
- Jinhyoung D. Lee, Myung Sunny Kim, Caslav Brukner
- Abstract
An operational measure of distance of two quantum states is proposed. It is defined as a sum of differences in partial knowledge over a complete set of mutually complementary measurement for the two states. Results showed that the measure is operationally invariant and is equivalent to the Hilbert-Schmidt distance.
- Organisation(s)
- External organisation(s)
- Hanyang University, Queen's University Belfast
- Journal
- Physical Review Letters
- Volume
- 91
- No. of pages
- 4
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.1103/PhysRevLett.91.087902
- Publication date
- 2003
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/operationally-invariant-measure-of-the-distance-between-quantum-states-by-complementary-measurements(93a420f7-5442-4c30-8cd8-62ecac9a32d8).html