Laser and Diffusion Driven Optimal Discrimination of Similar Quantum Systems in Resonator

TL;DR

This paper introduces a novel method for selectively preparing and separating similar quantum systems in a resonator by controlling the resonator length with a piezoelectric transducer, optimizing population transfer and diffusion-based separation.

Contribution

It presents a new approach using PZT-controlled resonator length to optimize quantum state preparation and separation in a gas flow, differing from prior methods.

Findings

Effective population transfer achieved with tailored laser fields.

Selective separation based on diffusion rates due to mass differences.

Use of PZT as a control mechanism for resonator length.

Abstract

A method for solving the problem of efficient population transfer from the ground to some excited state by available technical means (varying resonator length) is proposed. We consider a mixture of similar quantum systems distributed in a stationary gas flow in the resonator with variable resonator length, which implements tailored laser field close to the optimal one. In difference from previous works, in this work piezoelectric transducer (PZT; or actuator) is used as mean of control to manipulate variable resonator length. The external actions are optimized to selectively prepare different stationary states of different species which are then separated using their diffusion with rates which differ due to different masses. This system provides an example of the general problem of optimizing states of distributed systems with stationary gas flow with diffusion.