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Simulation of Singlet correlation-statistics by different resources

Lecture: Dr. Rajjak Gazi, WBUT, West Bengal
Speaker
Lecture: Dr. Rajjak Gazi, WBUT, West Bengal
When Nov 12, 2015
from 05:15 PM to 06:15 PM
Where LH 006
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Abstract: 

The simulation of multipartite quantum correlations by using different kind of resources like finite communication, shared randomness, other no-signalling correlation and measurement dependency is an interesting area of research in foundational aspect of quantum physics. There is a procedure to simulate singlet statistics by exchanging one bit along with shared randomness between the two parties. Here the local out- puts corresponding to measurement results are deterministic. There is another protocol which also simulates singlet statistics by using the Popescu-Rorlich nonlocal correlation and here the local outputs are completely random. Combining these two we suggest a complementary relation between the amount of randomness in the local outputs and required classical bits for simulation of singlet statistics. In general, singlet statistics can be simulated if we sacrifice the freedom in choosing local measurement. It has been shown that sacrificing 14% freedom in the choice of measurements in both sides is necessary as well as sufficient for simulating singlet statistics. We, in the same spirit, show that 41% lack of freedom on one side is also necessary and sufficient for the same job.