Experimental optimal verification of three-dimensional entanglement on a
silicon chip
- URL: http://arxiv.org/abs/2208.12952v1
- Date: Sat, 27 Aug 2022 07:45:21 GMT
- Title: Experimental optimal verification of three-dimensional entanglement on a
silicon chip
- Authors: Lijun Xia, Liangliang Lu, Kun Wang, Xinhe Jiang, Shining Zhu and
Xiaosong Ma
- Abstract summary: We experimentally implement an optimal quantum verification strategy on a three-dimensional maximally entangled state.
A 95% confidence is achieved from 1190 copies to verify the target quantum state.
Our results indicate that quantum state verification could serve as an efficient tool for complex quantum measurement tasks.
- Score: 3.9805421324529133
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: High-dimensional entanglement is significant for the fundamental studies of
quantum physics and offers unique advantages in various quantum information
processing (QIP) tasks. Integrated quantum devices have recently emerged as a
promising platform for creating, processing, and detecting complex
high-dimensional entangled states. A crucial step towards practical quantum
technologies is to verify that these devices work reliably with an optimal
strategy. In this work, we experimentally implement an optimal quantum
verification strategy on a three-dimensional maximally entangled state using
local projective measurements on a silicon photonic chip. A 95% confidence is
achieved from 1190 copies to verify the target quantum state. The obtained
scaling of infidelity as a function of the number of copies is -0.5497+-0.0002,
exceeding the standard quantum limit of -0.5 with 248 standard deviations. Our
results indicate that quantum state verification could serve as an efficient
tool for complex quantum measurement tasks.
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