Abstract
We discuss a type of measurement in which a macroscopically large angular momentum (spin) is "created" nonlocally by the measurement of just a few atoms from a double Fock state. This procedure apparently leads to a blatant nonconservation of a macroscopic variable-the local angular momentum. We argue that while this gedankenexperiment provides a striking illustration of several counter-intuitive features of quantum mechanics, it does not imply a non-local violation of the conservation of angular momentum.
Original language | English |
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Pages (from-to) | 1783-1791 |
Number of pages | 9 |
Journal | International Journal of Theoretical Physics |
Volume | 51 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2012 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Bose-Einstein condensate
- Nonlocality
- Quantum measurement