Protection of quantum states from disturbance due to random potential by successive translation

TL;DR

This paper introduces a method using successive rapid translations of quantum states to shield them from disturbances caused by random potentials, effectively creating a uniform potential environment and enhancing state stability.

Contribution

The study demonstrates a novel approach of successive translations to protect quantum states, extending their coherence time beyond stationary trapping methods.

Findings

Quantum states remain undisturbed longer with successive translations.

Transport velocity influences the uniformity of the effective potential.

Fast-forward scaling theory can be used to protect Bose-Einstein condensates.

Abstract

We show a method to protect quantum states from the disturbance due to the random potential by successive rapid manipulations of the quantum states. The quantum states are kept undisturbed for a longer time than the case of the simple trapping with a stationary potential. The effective potential, which the quantum states feel, becomes uniform when the velocity of the transport is sufficiently large. It is also shown that the alternating transport of a Bose-Einstein condensate with the driving potential derived by fast-forward scaling theory [Masuda and Nakamura, Proc. R. Soc. A 466, 1135 (2010)] can protect it from the disturbance.