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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Polarization preserving ultra fast optical shutter for quantum information processing.

Nicoló Spagnolo¹, Chiara Vitelli, Sandro Giacomini

¹Dipartimento di Fisica dell'Universitá La Sapienza and Consorzio Nazionale, Interuniversitario per le Scienze Fisiche della Materia, Roma 00185, Italy.

|October 30, 2008

Summary

This summary is machine-generated.

Researchers developed an ultra-fast optical shutter that preserves polarization states using a self-stabilized interferometer. This device offers high transmittivity and fidelity, crucial for quantum information processing applications.

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Area of Science:

Optics and Photonics
Quantum Information Science

Background:

Controlling optical fields and their polarization states is essential for advanced applications.
Existing methods may compromise polarization fidelity or speed.

Purpose of the Study:

To realize an ultra-fast optical shutter.
To ensure preservation of generic polarization states.
To provide a tool for light-atom interface control.

Main Methods:

Utilized a self-stabilized interferometer.
Incorporated two beam displacing prisms.
Employed a longitudinal Pockels cell.

Main Results:

Achieved an ultra-fast shutter for optical fields.
Demonstrated high fidelity preservation of polarization states.
Exhibited high transmittivity when active and low transmittivity when inactive.

Conclusions:

The developed shutter is effective for controlling optical fields.
It maintains high polarization fidelity.
It is a valuable tool for quantum information processing, particularly for light-atom interfaces.