Destruction of states in quantum mechanics

P. Caban, J. Rembielinski, K. A. Smolinski, Z. Walczak

Published 2001-12-17, updated 2002-03-19Version 2

A description of destruction of states on the grounds of quantum mechanics rather than quantum field theory is proposed. Several kinds of maps called supertraces are defined and used to describe the destruction procedure. The introduced algorithm can be treated as a supplement to the von Neumann-Lueders measurement. The discussed formalism may be helpful in a description of EPR type experiments and in quantum information theory.