Noise resilience in path-polarization hyperentangled probe states
- URL: http://arxiv.org/abs/2205.13288v2
- Date: Wed, 26 Oct 2022 11:59:41 GMT
- Title: Noise resilience in path-polarization hyperentangled probe states
- Authors: Akshay Kannan Sairam, C. M. Chandrashekar
- Abstract summary: We study the advantages of using photon pairs in certain path-polarization hyperentangled states in a noisy interaction.
Three different methods are used to show the resilience of path-polarization hyperentangled probe state against noise.
- Score: 1.9551668880584971
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Most quantum systems that are used for generating entanglement and for
practical applications are not isolated from the environment, and are hence
susceptible to noise. Entanglement in more than one degree of freedom between
two systems, known as hyperentanglement, is known to have certain advantages,
including robustness against noise over conventional entangled states. Quantum
illumination, imaging and communication schemes that involve sending one photon
from a pair of entangled photons and retaining the other photon usually involve
exposing only the signal photon to environmental noise. The disruptive nature
of noise degrades entanglement and other correlations which are crucial for
many of these applications. In this paper, we study the advantages of using
photon pairs in certain path-polarization hyperentangled states in a noisy
interaction where photons in only one of the paths are affected by noise. We
model such noise and study the effect of noise on the correlations present in
the hyperentangled photons. Three different methods, entanglement negativity,
entanglement witnesses and Bell nonlocality are used to show the resilience of
path-polarization hyperentangled probe state against noise.
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