Measurement-device-independent entanglement detection for
continuous-variable systems
- URL: http://arxiv.org/abs/2101.10778v2
- Date: Fri, 23 Apr 2021 09:13:42 GMT
- Title: Measurement-device-independent entanglement detection for
continuous-variable systems
- Authors: Paolo Abiuso, Stefan B\"auml, Daniel Cavalcanti, Antonio Ac\'in
- Abstract summary: We study the detection of continuous-variable entanglement, for which most of the existing methods require a full specification of the devices.
We present protocols for entanglement detection in a scenario where the measurement devices are completely uncharacterised.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the detection of continuous-variable entanglement, for which most of
the existing methods designed so far require a full specification of the
devices, and we present protocols for entanglement detection in a scenario
where the measurement devices are completely uncharacterised. We first
generalise, to the continuous variable regime, the seminal results by Buscemi
[PRL 108, 200401(2012)] and Branciard et al. [PRL 110, 060405 (2013)], showing
that all entangled states can bedetected in this scenario. Most importantly, we
then describe a practical protocol that allows for the
measurement-device-independent certification of entanglement of all two-mode
entangled Gaussian states. This protocol is feasible with current technology as
it makes only use of standard optical setups such as coherent states and
homodyne measurements.
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