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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

Multidimensional spectroscopy with entangled light: loop vs ladder delay scanning protocols.

Konstantin E Dorfman¹, Shaul Mukamel¹

¹Department of Chemistry, University of California, Irvine, California 92697-2025, USA.

New Journal of Physics

|December 29, 2015

Summary

This summary is machine-generated.

We introduce a novel non-time-ordered optical signal measurement protocol using loop diagrams. This method enhances the observation of intraband dephasing and provides background-free measurements with entangled light.

Keywords:

entangled light nonlinear spectroscopy pulse shaping

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Area of Science:

Quantum Optics
Spectroscopy
Physical Chemistry

Background:

Multidimensional optical signals are typically measured using time-ordered pulse sequences.
These sequences, described by ladder diagrams, control density matrix evolution.
Limitations exist in observing intraband dephasing with traditional time-ordered methods.

Purpose of the Study:

To propose a new non-time-ordered protocol for optical signal measurement.
To utilize wavefunction time evolution and loop diagrams for enhanced analysis.
To reveal information about intraband dephasing inaccessible to conventional techniques.

Main Methods:

Development of a non-time-ordered optical measurement protocol.
Utilizing loop diagrams to describe time evolution of the wavefunction.
Employing entangled light to couple time variables for selective measurements.

Main Results:

The new protocol allows observation of distinct resonance types.
Intraband dephasing information is revealed, not easily accessible by time-ordered methods.
Entangled light enables background-free measurements and high selectivity for resonances.

Conclusions:

The non-time-ordered protocol offers a powerful new approach to optical signal analysis.
Entangled light significantly enhances measurement selectivity and suppresses background noise.
This technique can resolve states obscured by fast dephasing when using classical light.