Probabilities and microscopic behaviors

Jun He, Bei Liu, Wen-Ting Diao +3 more

A single atom in a magneto–optical trap (MOT) with trap size (hundreds of micrometers) can be transferred into an optical microscopic tweezer with a probability of ~ 100%. The ability to transfer a single atom into two traps back and forth allows us to study the loading process. The loading probability is found to be insensitive to the geometric overlap of the MOT and the tweezer. It is therefore possible to perform simultaneously loading of a single atom into all sites of the tweezer array for many qubits. In particular, we present a simulation of the one-dimensional and two-dimensional arrays of an optical microscopic tweezer. We find the same qualitative behavior for all of the trap parameters.

Ángel Rivas, Susana F. Huelga

Kelin Wang, Wei Jiang, Shaolong Wan +1 more

Occupation probability and changes of the environment in a dissipative two-state system have been investigated using a systematic approximate method. This method explores the tunneling dynamics through a system state vector with manifest physical meanings and provides a deep microscopic insight into the dynamical behaviors of the system.

Alexey A. Kryukov

Abstract Newtonian and Scrödinger dynamics can be formulated in a physically meaningful way within the same Hilbert space framework. The resulting unexpected relation between classical and quantum motions goes beyond the results provided by the Ehrenfest theorem. The normal probability distribution and the Born rule turn out to be related. Here a dynamical mechanism responsible for the latter formula is proposed and applied to measurements of macroscopic and microscopic systems. A new meaning of the wave function collapse is proposed. The results are used to explore the classical behavior of macroscopic bodies in quantum theory.