# Measuring entangled pairs

In the quantum world, we do not always have to collapse into the 0 or 1 state after measuring, as would be the case in the classical world. We can also choose to collapse into pairs of superposition states. This has implications for what happens when we measure entangled pairs.

## Further thinking

Suppose two qubits are perfectly entangled, and therefore their measurement outcomes will be fully correlated (when they are measured in the same manner). However, the two qubits are thousands of kilometers away. By measuring one qubit, the measurement outcome of the other qubit is **instantaneously** known with a 100% probability. Did the information from the one measurement reach the other qubit with a speed faster then light?

## Further reading

Read this thought-provoking article about the EPR Paradox.

This excellent blog by Brian Koberlein tries to give an answer to the paradox: https://briankoberlein.com/blog/quantum-entanglement/