A double-mode strategy of coherent quantum noise cancellation (CQNC) is developed to mitigate the effect of the backaction-noise in optomechanical systems. Working under an asymmetrical configuration, the CQNC strategy of quantum interference can promote the system stabilization in addition to enhance ...
[Phys. Rev. Lett. 90, 083601 (2003)] for the reduction of back action noise to the realistic case of a gravitational wave interferometer. We show that by applying an active control to each mirror of the interferometer it is possible to improve significatively its sensitivity...
We show that back-action noise in interferometric measurements such as gravitational-waves detectors can be completely suppressed by a local control of mirrors motion. An optomechanical sensor with an optimized measurement strategy is used to monitor mirror displacements. A feedback loop then eliminates...
In this paper, we investigate the quantum force sensing in a single optomechanical system by the use of a coherent quantum noise cancellation scheme. The system consists of a Fabry-Perot cavity simultaneously coupled to a mechanical oscillator and an ensemble of atom. Accordingly, the dynamics of...
The atomic spin (in the spin cell, blue box at left) is driven by light noise XL,in and spin noise FS. Output light of the spin system is channelled to the optomechanical system. En route, it experiences losses characterized by a transmissivity η1 associated with additional light noise ...
We experimentally demonstrate a cancellation of back-action noise in optical measurements. Back-action cancellation was first proposed within the framework of gravitational-wave detection by dual resonators as a way to drastically improve their sensitivity. We have developed an experiment based on a high...
In an interconnection of two components in a bio-molecular network, noise in the downstream component can be reduced by increasing the magnitude of the down-stream signal. However, this method of reducing noise increases the back-effect to the upstream system, called 'retroactivity', thereby incre...
The gate-nanobridge current Ig was acquired by using a low-noise voltage source and a 10−11 A/V-gain low-noise current amplifier in a two-wire configuration.Data availability The data that support the findings of this study are available from the corresponding author upon reasonable ...
Firstly, we measure the effect of a QPC on electron tunneling between two InAs quantum dots, and show that a model based on the QPC’s shot-noise can account for it. Secondly, we discuss the possibility of lowering the measurement current (and thus the back-action) used for charge ...
Action Life Group - Background noise