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Source Transformation for AC Circuits

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The process of source transformation in the frequency domain entails the conversion of a voltage source, positioned in series with an impedance, into a current source that is parallel to an impedance, or the other way around. It is essential to maintain the following relationships while transitioning from one source type to another.

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Related Experiment Video

Updated: Jun 26, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Acoustic wave-based single photon shifter for solid-state sources.

Jiaxing Guo, Huijun Zhao, Kaili Xiong

|November 14, 2024

Summary

This summary is machine-generated.

Researchers developed an integrated single-photon frequency shifter using acousto-optic modulation on a lithium niobate platform. This device enables precise quantum spectral control for quantum technologies.

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Last Updated: Jun 26, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

Quantum optics
Integrated photonics
Materials science

Background:

Precise control of nonclassical light frequency is crucial for quantum computation, communication, and system integration.
A lack of easily integrated frequency-shift devices for solid-state single-photon sources hinders quantum technology development.

Purpose of the Study:

To propose and demonstrate an integrated single-photon frequency shifter.
To achieve deterministic on-chip quantum spectral control.

Main Methods:

Utilized acousto-optic modulation on a lithium niobate on insulator (LNOI) platform.
Integrated two interdigital transducers (IDTs) for acoustic wave generation.
Employed a silicon waveguide positioned at acoustic wave nodes to enhance interaction.

Main Results:

Achieved a low half-wavelength voltage length product (Vπ×L) of 0.18 V cm.
Demonstrated a frequency shift of up to ± 405 GHz with near-unity conversion efficiency.
Operated the device with a driving frequency of 129.7 MHz and a driving voltage of 10 V.

Conclusions:

The developed device shows the feasibility of deterministic on-chip quantum spectral control.
This technology is pivotal for the construction of hybrid quantum networks.
The integrated frequency shifter offers a practical solution for solid-state single-photon sources.