Submitted by matpompili t3_y6lv6u in Futurology
StuckinbedtilDec t1_isqc9ia wrote
Reply to comment by matpompili in Experimental demonstration of entanglement delivery using a quantum network stack by matpompili
Then it is possible to send information by knowing exactly when the measurement was being conducted. As long as both groups have clocks that are synchronized then a 1/0 could be transferred based on the timing of the measurement.
Suttonian t1_isqdtu3 wrote
Let's do the experiment.
- Team A and Team B.
- They agree that at exactly 10 am they will take measurements.
- Team A gets a left spin, they know Team B has the opposite.
- Team B gets a right spin, they know Team A has the opposite.
But what information has actually been transmitted? How could a message be transmitted?
StuckinbedtilDec t1_isqgegx wrote
If team A takes a secret measurement at 10 am there's no way team B would know what time it was taken?
Suttonian t1_isqryyy wrote
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.
StuckinbedtilDec t1_isqsxdp wrote
Could B team detect the moment a connection was lost?
Suttonian t1_isqzspi wrote
No. Any detection/measurement results in the entanglement breaking.
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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