Experimental demonstration of one-shot coherence distillation: High-dimensional state conversions

TL;DR

This paper experimentally demonstrates one-shot coherence distillation in high-dimensional quantum states using optical devices, revealing that larger errors can lead to higher distillation rates, advancing understanding of quantum coherence conversions.

Contribution

The study introduces a practical method for high-dimensional one-shot coherence distillation using strictly incoherent operations and demonstrates it experimentally.

Findings

Higher coherence distillation rates are achievable with larger tolerated errors.

The experimental setup successfully converts higher-dimensional states to lower-dimensional states.

The work provides new insights into quantum coherence transformations in high-dimensional systems.

Abstract

We experimentally investigate problems of one-shot coherence distillation [Regula, Fang, Wang, and Adesso, Phys. Rev. Lett. 121, 010401 (2018)]. Based on a set of optical devices, we design a type of strictly incoherent operation (SIO), which is applicable in high-dimensional cases and can be applied to accomplish the transformations from higher-dimensional states to lower-dimensional states. Furthermore, a relatively complete process of the one-shot coherence distillation is experimentally demonstrated for three- and four-dimensional input states. Experimental data reveal an interesting result: higher coherence distillation rates (but defective) can be reached by tolerating a larger error. Our finding paves a fresh way in the experimental investigation of quantum coherence conversions through various incoherent operations.