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arXiv · 2305.11491

Entanglement generation and detection in split exciton-polariton condensates

Jingyan Feng·Hui Li·Zheng Sun·Tim Byrnes
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Abstract

We propose a method of generating and detecting entanglement in two spatially separated excitonpolariton Bose-Einstein condensates (BECs) at steady-state. In our scheme we first create a spinor polariton BEC, such that steady-state squeezing is obtained under a one-axis twisting interaction. Then the condensate is split either physically or virtually, which results in entanglement generated between the two parts. A virtual split means that the condensate is not physically split, but its near-field image is divided into two parts and the spin correlations are deduced from polarization measurements in each half. We theoretically model and examine logarithmic negativity criterion and several correlation-based criteria to show that entanglement exists under experimentally achievable parameters.

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Jingyan Feng, Hui Li, Zheng Sun, Tim Byrnes. 2023-05-19. Entanglement generation and detection in split exciton-polariton condensates. https://arxiv.org/abs/2305.11491

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