Catching the zitterbewegung

TL;DR

This paper proposes a practical method to detect zitterbewegung charge oscillations via conductance measurements in a three-terminal junction, enabling experimental observation of this elusive quantum phenomenon.

Contribution

It introduces a feasible experimental setup to observe zitterbewegung through conductance oscillations modulated by spin-orbit interaction and magnetic fields.

Findings

Zitterbewegung oscillations can be detected via conductance in a three-terminal junction.

Tuning spin-orbit interaction or magnetic field modulates the oscillation period.

The setup is compatible with current technology and materials.

Abstract

We demonstrate how the zitterbewegung charge oscillations can be detected through a charge conductance measurement in a three-terminal junction. By tuning the spin-orbit interaction strength or an external magnetic field the zitterbewegung period can be modulated, translating into complementary conductance oscillations in the two outgoing leads of the junction. The proposed experimental setup is within the reach of demonstrated technology and material parameters, and enables the observation of the so far elusive zitterbewegung phenomenon.