State-dependent rotations of spins by weak measurements
Journal Article
·
· Physical Review. A
- Centre for Time, University of Sydney, Sydney, New South Wales 2006, Australia and School of Physics, University of New South Wales, Sydney, New South Wales 2052 (Australia)
It is shown that a weak measurement of a quantum system produces a new state of the quantum system which depends on the prior state, as well as the (uncontrollable) measured position of the pointer variable of the weak-measurement apparatus. The result imposes a constraint on hidden-variable theories which assign a different state to a quantum system than standard quantum mechanics. The constraint means that a crypto-nonlocal hidden-variable theory can be ruled out in a more direct way than previously done.
- OSTI ID:
- 21537393
- Journal Information:
- Physical Review. A, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevA.83.032121; (c) 2011 American Institute of Physics; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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