Quantum noise and quantum nondemolition measurements

Journal Article · Tue Jun 15 04:00:00 EDT 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.3137· OSTI ID:5234157

Hillery, M; Scully, M O

We examine the effects of quantum noise in the readout of a proposed quantum nondemolition (QND) system. The equations of motion of the system are solved approximately both with and without noise. The effect of the noise upon the measurement accuracy of the system is determined and it is found that, in principle, the presence of quantum noise in the readout should not prevent one from measuring the amplitude of the oscillator to better than the standard quantum limit.

• Research Organization: Institute for Modern Optics, Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 and Max-Planck Institut fuer Quantenoptik, D-8046 Garching bei Muenchen, Federal Republic of Germany
• OSTI ID: 5234157
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 25:12; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
657002 -- Theoretical & Mathematical Physics-- Classical & Quantum Mechanics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIFFERENTIAL EQUATIONS
EIGENSTATES
ELECTROMAGNETIC FIELDS
ELECTRONIC EQUIPMENT
EQUATIONS
EQUATIONS OF MOTION
EQUIPMENT
GRAVITATIONAL WAVE DETECTORS
HAMILTONIANS
HARMONIC OSCILLATORS
MATHEMATICAL OPERATORS
MEASURING INSTRUMENTS
MECHANICS
OSCILLATORS
PARTIAL DIFFERENTIAL EQUATIONS
QUANTUM MECHANICS
QUANTUM OPERATORS
RADIATION DETECTORS