Sabotaging the harvesting of correlations from quantum fields
- URL: http://arxiv.org/abs/2111.01191v1
- Date: Mon, 1 Nov 2021 18:33:39 GMT
- Title: Sabotaging the harvesting of correlations from quantum fields
- Authors: Abhisek Sahu, Irene Melgarejo-Lermas and Eduardo Mart\'in-Mart\'inez
- Abstract summary: We study the non-perturbative harvesting of classical and quantum correlations between two parties coupled to a quantum field.
We show that even a single interloper can completely sabotage all correlation harvesting between Alice and Bob by acting on the causal past of one of them.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the non-perturbative harvesting of classical and quantum
correlations between two parties coupled to a quantum field. First, we consider
a scenario with an arbitrary number of two-level systems that couple to a
quantum field locally in time. Then, we study the impact of the presence of
additional detectors (interlopers) on the ability for two target detectors
(Alice and Bob) to acquire correlations through their interaction with the
field. We analyze the harvesting of different correlation measures in this
non-perturbative regime and we demonstrate that even a single interloper can
completely sabotage all correlation harvesting between Alice and Bob by acting
on the causal past of one of them. Specifically, we show that the interloper is
able to interact with the field so that the field itself `floods' one of the
parties with entropy. This prevents Alice and Bob from acquiring any
correlations. Furthermore, we show that this kind of attack cannot be defended
against.
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