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Suttonian t1_isqryyy wrote

Reply to comment by StuckinbedtilDec in Experimental demonstration of entanglement delivery using a quantum network stack by matpompili

No there is no way for them to know if team A took a secret measurement.

If either side measures the entangled particle it will break the entanglement, the 'connection' is lost.

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StuckinbedtilDec t1_isqsxdp wrote

Could B team detect the moment a connection was lost?

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Suttonian t1_isqzspi wrote

No. Any detection/measurement results in the entanglement breaking.

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warplants t1_isr24mq wrote

No. The only possible way to know there was a connection in the first place is to compare the measurements of A and B teams; if their measurements are strongly correlated, there was a connection.

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