Quantum-limited estimation of continuous spontaneous localization

S. McMillen, M. Brunelli, M. Carlesso, A. Bassi, H. Ulbricht, M. G. A. Paris, M. Paternostro

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
345 Downloads (Pure)


We apply the formalism of quantum estimation theory to extract information about potential collapse mechanisms of the continuous spontaneous localisation (CSL) form.
In order to estimate the strength with which the field responsible for the CSL mechanism couples to massive systems, we consider the optomechanical interaction
between a mechanical resonator and a cavity field. Our estimation strategy passes through the probing of either the state of the oscillator or that of the electromagnetic field that drives its motion. In particular, we concentrate on all-optical measurements, such as homodyne and heterodyne measurements.
We also compare the performances of such strategies with those of a spin-assisted optomechanical system, where the estimation of the CSL parameter is performed
through time-gated spin-like measurements.
Original languageEnglish
Article number012132
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Publication statusPublished - 25 Jan 2017


Dive into the research topics of 'Quantum-limited estimation of continuous spontaneous localization'. Together they form a unique fingerprint.

Cite this