Impossibility of measuring the wave function of a single quantum system

G. M. D’Ariano, Horace Pak-Hong Yuen

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

The general impossibility of determining the state of a single quantum system is proved for arbitrary measuring schemes, including a succession of measurements.Some recently proposed methods are critically examined.A scheme for tomographic measurements on a single copy of a radiation field is devised, showing that the system state is perturbed however weak the system-apparatus interaction is, due to the need of preparing the apparatus in a highly “squeezed” state.

Original languageEnglish (US)
Pages (from-to)2832-2835
Number of pages4
JournalPhysical review letters
Volume76
Issue number16
DOIs
StatePublished - Apr 15 1996

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wave functions
radiation distribution
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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Impossibility of measuring the wave function of a single quantum system. / D’Ariano, G. M.; Yuen, Horace Pak-Hong.

In: Physical review letters, Vol. 76, No. 16, 15.04.1996, p. 2832-2835.

Research output: Contribution to journalArticle

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