Measurement-Device-Independent Verification of a Quantum Memory
POSTER
Abstract
We report an experiment that verifies an atomic-ensemble quantum memory via a measurement-device-independent scheme. A single photon generated via Rydberg blockade in one atomic ensemble is stored in another atomic ensemble via electromagnetically induced transparency. After storage for a long duration, this photon is retrieved and interfered with a second photon to perform a joint Bell-state measurement (BSM). The quantum state for each photon is chosen based on a quantum random number generator, respectively, in each run. By evaluating correlations between the random states and BSM results, we certify that our memory is genuinely entanglement preserving.
*This work was supported by National Key R&D Program of China, Anhui Initiative in Quantum Information Technologies, National Natural Science Foundation of China, and the Chinese Academy of Sciences.
Publication: PHYSICAL REVIEW LETTERS 127, 160502 (2021)
Presenters
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Yong Yu
- Delft University of Technology