On the principle of quantum nondemolition measurements

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Theor. Math. Phys.; (United States)

OSTI ID:6996367

Kholevo, A S

This paper proposes a generalization of the principle of quantum nondemolition measurements. Its essence reduces to measureing a commuting family of observables on a certain extension of the original system, the extension including an auxiliary independent system. The advantages of such a generalization are demonstrated by the simple example of estimating the force acting on a quantum oscillator, for which the principle makes it possible to obtain the optimal estimate. The connection between the principle of quantum nondemolition measurement and the scheme of repeated measurements in the quantum theory of open systems is investigated.

• Research Organization: V.A. Steklov Mathematics Institute
• OSTI ID: 6996367
• Journal Information: Theor. Math. Phys.; (United States), Journal Name: Theor. Math. Phys.; (United States) Vol. 65:3; ISSN TMPHA
• Country of Publication: United States
• Language: English

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