Phase Separated BEC for High-Sensitivity Force Measurement

High-sensitivity force measurement using entangled probes

We show the possibility to improve the measurement sensitivity of a weak force by using massive probes in an entangled state. This latter can be achieved by exploiting radiation pressure effects. 03.65.Ta, 42.50.Vk, 03.65.Ud Typeset using REVTEX 1 Since the original formulation of quantum mechanics, entanglement has been recognized as one of its most puzzling features [1,2]. During the last few...

High sensitivity, time integrated measurement devices

High sensitivity, ring4ype measurement devices based on acoustooptic and fiberoptic delay lines are described. Applications of these devices for linear and angular displacements with resolution of O.1&m and lj.trad are shown. Methods offurther improvement ofthe devices' characteristics are discussed.

Quadrature phase interferometer for high resolution force spectroscopy.

In this article, we present a deflection measurement setup for Atomic Force Microscopy (AFM). It is based on a quadrature phase differential interferometer: we measure the optical path difference between a laser beam reflecting above the cantilever tip and a reference beam reflecting on the static base of the sensor. A design with very low environmental susceptibility and another allowing calib...

Weak Force Measurement in Bistable Optomechanical System

One of the main milestones in the study of opto-mechanical system is to increase the sensitivity of weak forces measurement up to the standard quantum limit. We have studied the detection of weak force under a bistable condition in red detuned regime. In this case, dynamics of the system behaves asymptotically similar to stationary state and applying external force affects phase and fluctuation...

Nanostructures from Phase Separated Polymers