Abstract
An instantaneous nondemolition measurement technique for composite quantum-mechanical systems (those which consist of several separate subsystems) is described, and that technique is applied to the design of verification experiments for some nonlocal variables and states. Relativistic restrictions on the measurability of nonlocal properties are derived, and other, less familiar, varieties of measurement are discussed.
- Received 23 September 1985
DOI:https://doi.org/10.1103/PhysRevD.34.1805
©1986 American Physical Society
