Temperature-related single-photon transport in waveguide QED

TL;DR

This paper presents a method to control and measure single-photon transport in waveguide QED systems using temperature adjustments, enabling precise low-temperature optical thermometry.

Contribution

It introduces a thermal control scheme for single-photon transport and proposes a sensitive optical thermometer for low-temperature measurements.

Findings

Single-photon reflection can be tuned by thermal bath temperature.

The scheme allows for accurate low-temperature sensing.

Potential for high-precision optical thermometry in low-temperature regimes.

Abstract

We propose a scheme to realize the single-photon transport affected by the temperature. The scheme is composed by a waveguide-atom interacting structure linked to a thermal bath. The single-photon reflection coefficient can be tuned by adjusting the temperature of the thermal bath. This provides a thermal control of the single-photon transport. Moreover, the temperature of the thermal bath can be estimated by measuring the single-photon transport. It is feasible that the estimation on the temperature is sensitive to slight changes of low temperature. This implies an avenue for implementing the optical thermometer with the ability to accurately measure the sample temperature in the low-temperature region.