Quantum-non-demolition measurement of the phaseстатья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:The problem of the QND measurement of the phase of a linear quantum oscillator is analyzed. It is shown that by measuring the quadrature amplitude one can reach a resolution close to the fundamental limit in a narrow range of phase values. A new method of QND phase measurement is proposed and analyzed. This method is also based on the coordinate interaction between the quantum object and the measuring device but is free from the limitation mentioned above. Several practical schemes of phase measurements are discussed.