Analyzing the Quantum Zeno and anti-Zeno effects using optimal projective measurements.

ABSTRACT: Measurements in quantum mechanics can not only effectively freeze the quantum system (the quantum Zeno effect) but also accelerate the time evolution of the system (the quantum anti-Zeno effect). In studies of these effects, a quantum state is prepared repeatedly by projecting the quantum state onto the initial state. In this paper, we repeatedly prepare the initial quantum state in a different manner. Instead of only performing projective measurements, we allow unitary operations to be performed, on a very short time-scale, after each measurement. We can then repeatedly prepare the initial state by performing some projective measurement and then, after each measurement, we perform a suitable unitary operation to end up with the same initial state as before. Our objective is to find the pr

SUBMITTER: Aftab MJ 

PROVIDER: S-EPMC5603598 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature