Premium
Nonclassicality of States in Quantum Optics
Author(s) -
Wünsche A.,
Dodonov V.V.,
Man'ko O.V.,
Man'ko and V.I.
Publication year - 2001
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/1521-3978(200110)49:10/11<1117::aid-prop1117>3.0.co;2-4
Subject(s) - coherent states , quantum optics , physics , coherent states in mathematical physics , quantum mechanics , quantum state , fock space , squeezed coherent state , cluster state , quantum , schrödinger's cat , quantum imaging , open quantum system , quantum technology , quantum information
The nearest Hilbert‐Schmidt distance of (pure) states to coherent states is discussed as a quantitative measure of nonclassicality of states in quantum optics or quantum mechanics of harmonic oscillators. Fock states, squeezed coherent states and finite superpositions of coherent states (Schrödinger cat states) are considered as examples. Some other approaches to nonclassicality of states in quantum optics are shortly discussed.