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Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

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Published on: November 1, 2013

Programmable and sequential Gaussian gates in a loop-based single-mode photonic quantum processor.

Yutaro Enomoto¹, Kazuma Yonezu¹, Yosuke Mitsuhashi¹

¹Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Science Advances

|November 12, 2021

Summary

This summary is machine-generated.

Researchers developed a versatile photonic quantum processor that is universal, scalable, and programmable. This loop-based optical circuit enables complex quantum operations for general-purpose photonic quantum information processing.

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Area of Science:

Quantum Information Science
Photonics
Quantum Computing

Background:

Photonic quantum information processing relies on quantum processors for optical quantum state manipulation.
Existing photonic processors lack universality, scalability, and programmability simultaneously.

Purpose of the Study:

To introduce an original loop-based single-mode photonic quantum processor.
To design a processor that is universal, scalable, and programmable for versatile quantum information processing.

Main Methods:

Utilizing a dynamically controlled loop-based optical circuit for time-domain processing.
Implementing programmable quantum operations on single-mode optical quantum states.
Demonstrating programmable single-mode Gaussian and multistep squeezing gates.

Main Results:

The processor successfully performed programmable single-mode Gaussian gates and multistep squeezing gates.
Universality was proven through the injection of ancillary states.
The processor architecture is straightforwardly extensible to multimode applications.

Conclusions:

The developed photonic quantum processor is programmable, scalable, and potentially universal.
This versatile processor is suitable for general-purpose photonic quantum information processing applications.
The loop-based design offers a novel approach to photonic quantum computation.