Does Unitarity Necessitate That an Entanglement Cannot be Destroyed Until a Measurement of 1 of the Entangled Particles is Made? The Answer Is No.

The generally held view is that an entanglement of two particles cannot be broken until a measurement is made on one of the entangled particles. One reason given for the above thesis is unitarity. Great empirical evidence does indicate the importance of unitarity in the evolution of the wave function itself and also for the mathematical processes for making a measurement prediction. Both unitarity in wave function evolution before measurement and also the mathematical processes for making measurement predictions are supported by great empirical evidence. The view of entanglement that it cannot be broken until a measurement is made on one of the entangled particles is an extension of the view that a wave function is not destroyed until a measurement associated with the wave function is made. It is proposed that one lose or destroy an entangled particle and any which-way information the particle holds (and that the particle supplies to the other entangled particle before any measurements are made) through the use of a large system interacting with the particle to be destroyed. Whether or not the entangled particles is destroyed in the manner noted is correlated to different distributions of the other entangled particle.