Quantum Limits on Measurement and Control of a Mechanical Oscillator

The record of the measurement is used to perform feedback control so as to suppress both classical thermal motion and quantum measurement back-action. These results verify some of the central and long-standing predictions of quantum measurement theory applied to a macroscopic object.

Inregistrarea masuratorii este utilizata pentru a efectua controlul feedback-ului, astfel incat sa suprime atat miscarea termica clasica, cat si masurarea cuantica a actiunii inapoi. Aceste rezultate verifica unele dintre predictiile centrale si de lunga durata ale teoriei masurarii cuantice aplicate unui obiect macroscopic.