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Updated: Jun 14, 2026

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

Angular two-photon interference and angular two-qubit states.

Anand Kumar Jha¹, Jonathan Leach, Barry Jack

¹Institute of Optics, University of Rochester, Rochester, New York 14627, USA.

Physical Review Letters

|April 7, 2010

Summary

This summary is machine-generated.

Researchers studied angular two-photon interference using entangled photons and double angular slits. This demonstrated a new entangled two-qubit state based on photon correlations, useful for quantum information protocols.

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Published on: April 4, 2017

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Last Updated: Jun 14, 2026

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

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

Area of Science:

Quantum optics
Quantum information science

Background:

Two-photon interference is a fundamental quantum phenomenon.
Entangled photons exhibit correlations crucial for quantum technologies.

Purpose of the Study:

To investigate angular two-photon interference using entangled photons.
To demonstrate a novel entangled two-qubit state derived from angular-position correlations.

Main Methods:

Utilizing angular-position-orbital-angular-momentum entangled photons.
Implementing a double angular slits interference scheme.
Quantifying entanglement using concurrence.

Main Results:

Observed angular two-photon interference.
Successfully demonstrated an entangled two-qubit state.
Established a link between angular-position correlations and entanglement.

Conclusions:

The study provides a new method for generating entangled quantum states.
This technique enhances capabilities for quantum information processing.
Angular-position correlations offer a valuable resource for quantum state preparation.