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Related Experiment Video

Updated: Jun 23, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

A parametrically programmable delay line for microwave photons.

Takuma Makihara¹, Nathan Lee², Yudan Guo²

¹Department of Applied Physics, Stanford University, Stanford, California, USA. makihara@stanford.edu.

Nature Communications

|May 31, 2024

Summary

This summary is machine-generated.

This study introduces a novel parametrically controlled delay line for microwave photons, enabling precise manipulation of quantum information. This advancement is key for developing better quantum repeaters and quantum computers with high hardware efficiency.

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Last Updated: Jun 23, 2026

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Area of Science:

Quantum information science
Microwave photonics
Quantum computing hardware

Background:

Delay lines are essential for quantum information storage, crucial for quantum repeaters and efficient quantum computers.
Traditional delay lines offer limited control over propagating fields.

Purpose of the Study:

To introduce a novel parametrically addressed delay line for microwave photons.
To achieve high-level control over stored quantum pulses.

Main Methods:

Parametrically driving a three-wave mixing circuit hybridized with resonators.
Engineering a spectral response to simulate a physical delay line.
Utilizing pulse energies on the order of a single photon.

Main Results:

Demonstrated precise control over microwave photon pulses, including selecting photon echoes and temporal translation.
Successfully performed pulse swapping operations.
Measured parametric interaction noise to be significantly less than one photon.

Conclusions:

The developed parametrically addressed delay line offers unprecedented control for quantum information processing.
This technology paves the way for more advanced quantum repeaters and hardware-efficient quantum computers.
Low added noise ensures high fidelity of quantum operations.