Abstract
We demonstrate that different kinds of mesoscopic quantum states of light can be efficiently generated from a simple iterative scheme. These states exhibit strong non-classical features, and could be of great interest for many applications such as quantum error-correcting codes or fundamental testings. Based on these states, we further propose a protocol allowing a large loophole-free violation of a Clauser–Horne–Shimony–Holt (CHSH)-type Bell's inequality with significant losses, thus showing that the quantum properties of some of these states can exhibit a remarkable robustness to losses.
Highlights
We demonstrate that different kind of mesoscopic quantum states of light can be efficiently generated from a simple iterative scheme using homodyne heralding
The violation of Bell inequalities is a crucial test for the foundations of quantum mechanics, to rule out classical mechanisms as the origin of quantum correlations [1]
Such a value was recently reached [10], closing the loophole with global detection efficiencies between 70% and 80%, using transition edge sensors [11]. These cryogenic sensors are not really widespread technologies and that is the reason why both loopholes are still not closed together. Even if this goal could be achieved in the near future, a loophole free violation of Bell inequalities is a major test for quantum mechanics: it can meet concrete applications like device independent quantum key distribution [12], and for that reason it can be interesting to obtain such a violation with affordable devices
Summary
The violation of Bell inequalities is a crucial test for the foundations of quantum mechanics, to rule out classical mechanisms as the origin of quantum correlations [1]. We demonstrate that different kind of mesoscopic quantum states of light can be efficiently generated from a simple iterative scheme using homodyne heralding.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
