Suppose we are given two boxes and we are told that there is a ball in either one of them.(adsbygoogle = window.adsbygoogle || []).push({});

We are free to pickup any one of the boxes - but only one.

Then we are allowed to measure or check what is in the picked box and the other one.

Normally we would have 50% chance of finding the ball in the box we picked.

Is it possible to build the system in such a way that the ball always turns up in the box that was not picked up.

i.e if we pickup a box we will never find the ball inside it but if we check the other box the ball would be in it.

Even if we repeat the experiment, the ball should not turn up in the box that was picked but always turn up in the other one.

I know this would be impossible using large objects like a ball, but if we replcae the ball with an electron which can be in a qauntum state, is this possible?

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Basic question on quantum mechanics and choice

Loading...

Similar Threads - Basic question quantum | Date |
---|---|

I Early Quantum Entanglement Experiments basic question? | Jan 21, 2017 |

Basic question about equations of Quantum field theory (QFT) | Jul 26, 2014 |

A few basic questions about quantum information | May 17, 2014 |

Quantum Entanglement Basic Experiment Question | Apr 26, 2014 |

A very basic question about the the origin of quantum levels | Sep 2, 2012 |

**Physics Forums - The Fusion of Science and Community**