Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Real-time spectral characterization of a photon pair source using a chirped supercontinuum seed

Jennifer Erskine, Duncan G. England, Connor Kupchak, Benjamin Sussman

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We perform joint spectral intensity measurements by studying stimulated four wave mixing in a birefringent fiber photon pair source. Seeding the process with a chirped supercontinuum beam, measurements are acquired in as little as 5 s.
DOI
10.1364/cleo_qels.2018.fm4g.6

Related papers

Real-time spectral characterization of a photon pair source using a chirped supercontinuum seed

Jennifer Erskine, Duncan G. England, Connor Kupchak +1 more

Photon pair sources have wide ranging applications in a variety of quantum photonic experiments and protocols. Many of these protocols require well controlled spectral correlations between the two output photons. However, due to low cross-sections, measuring the joint spectral properties of photon pair sources has historically been a challenging and time-consuming task. Here, we present an approach for the real-time measurement of the joint spectral properties of a fiber-based four wave mixing source. We seed the four wave mixing process using a broadband chirped pulse, studying the stimulated process to extract information regarding the spontaneous process. In addition, we compare stimulated emission measurements with the spontaneous process to confirm the technique's validity. Joint spectral measurements have taken many hours historically and several minutes with recent techniques. Here, measurements have been demonstrated in 5-30 s depending on resolution, offering substantial improvement. Additional benefits of this approach include flexible resolution, large measurement bandwidth, and reduced experimental overhead.

Optics Letters•Feb 13, 2018•5 citations

Characterization and Modification of Fiber-based Photon Pair Sources

Jennifer Erskine

Non-classical light sources are a fundamental building block of quantum photonic technologies. As these photonic technologies require higher numbers of sources and more specific source properties, it becomes increasingly important to characterize and manipulate these sources effectively. This thesis consists of three main projects, all relating to non-classical sources of light. First, we present a method for the rapid measurement of the joint spectral intensity of fiber-based photon pair sources. This method extends the concept of Stimulated Emission Tomography, using a chirped, broadband seed beam to stimulate the four wave mixing interaction. The use of the broadband seed, generated through supercontinuum generation, allows for measurements on the few second timescale and requires only a single pump laser to achieve high resolution joint spectra. In the second project, we use this characterization tool to test a variety of different fiber-based photon pair sources. We use three different modification approaches (bending, squeezing, and tapering) to induce changes in the joint spectral properties of the photon pair sources. We show that each of these modifications has some impact on the joint spectra measured. The resulting joint spectra are very complex, highlighting the importance of performing measurements rather than relying on calculations alone. Lastly, we demonstrate a fast switch for the manipulation of single photons. The switch uses the optical Kerr effect to rotate the polarization state of single photons at ultrafast timescales. The implementation of this switch is experimentally straightforward, using a commercial, single mode fiber as the Kerr medium and nJ level pump powers. We operate at an 80 MHz repetition rate and measure 97% switching efficiency, picosecond level switching speed, and approximately 800:1 signal to noise ratio from the operation.

•Nov 14, 2018•0 citations

High-resolution, stimulated-emission-based measurement of the joint spectral correlations of photon pairs produced in optical fiber

Bin Fang, Offir Cohen, Marco Liscidini +2 more

We demonstrate the measurement of photon-pair joint spectral correlations in optical fiber through stimulated four-wave mixing. This method enables us to study correlations more easily, precisely and quickly than with traditional coincidence counting measurements.

•Jan 1, 2014•0 citations

Photon Pair Generation via Spontaneous Four-Wave Mixing in Birefringent Optical Fibers

Brian J. Smith, Pierre Mahou, Offir Cohen +2 more

We experimentally demonstrate photon pair production in standard single-mode optical fibers via spontaneous four-wave mixing. The process utilizes birefringent phase matching to control the photon pair joint spectral structure.

Conference on Lasers and Electro-Optics•Jan 1, 2009•1 citation

Fast and highly resolved capture of the joint spectral density of photon pairs

Bin Fang, Offir Cohen, Marco Liscidini +2 more

Controlling the spatial and spectral–temporal properties of photon pairs produced in artificially structured materials is fundamental to the realization of numerous photonic quantum information applications. Tailoring the joint spectral properties of photon pairs is of particular importance for applications relying on time–energy entanglement, high-visibility interference, and heralding. Yet measuring the joint spectral properties is a time-consuming task requiring coincidence counting, typically resulting in low-resolution spectra with a poor signal-to-noise ratio. In this work we capture the joint spectral correlations of photon pairs that would be produced in optical fibers with unprecedented speed, resolution, and signal-to-noise ratio, using a scheme based on stimulated four-wave mixing. We also illustrate that this technique can be used in engineering joint spectral correlations, making it a powerful tool for studying quantum states.

Optica•Oct 28, 2014•103 citations

Tailored photon-pair generation in optical fiber through dual-pump spontaneous four-wave mixing

Yujie Zhang, Ryan Spiniolas, Kai Shinbrough +3 more

We experimentally tailor the joint spectra of photon pairs produced via dual-pump spontaneous four-wave mixing, achieving a joint spectral intensity without side-lobes. This work presents a new route towards generating spectrally uncorrelated photon pairs.

Frontiers in Optics•Jan 1, 2018•0 citations
Photon pair sources have wide ranging applications in a variety of quantum photonic experiments and protocols. Many of these protocols require well controlled spectral correlations between the two output photons. However, due to low cross-sections, measuring the joint spectral properties of photon pair sources has historically been a challenging and time-consuming task. Here, we present an approach for the real-time measurement of the joint spectral properties of a fiber-based four wave mixing source. We seed the four wave mixing process using a broadband chirped pulse, studying the stimulated process to extract information regarding the spontaneous process. In addition, we compare stimulated emission measurements with the spontaneous process to confirm the technique's validity. Joint spectral measurements have taken many hours historically and several minutes with recent techniques. Here, measurements have been demonstrated in 5-30 s depending on resolution, offering substantial improvement. Additional benefits of this approach include flexible resolution, large measurement bandwidth, and reduced experimental overhead.
Non-classical light sources are a fundamental building block of quantum photonic technologies. As these photonic technologies require higher numbers of sources and more specific source properties, it becomes increasingly important to characterize and manipulate these sources effectively. This thesis consists of three main projects, all relating to non-classical sources of light. First, we present a method for the rapid measurement of the joint spectral intensity of fiber-based photon pair sources. This method extends the concept of Stimulated Emission Tomography, using a chirped, broadband seed beam to stimulate the four wave mixing interaction. The use of the broadband seed, generated through supercontinuum generation, allows for measurements on the few second timescale and requires only a single pump laser to achieve high resolution joint spectra. In the second project, we use this characterization tool to test a variety of different fiber-based photon pair sources. We use three different modification approaches (bending, squeezing, and tapering) to induce changes in the joint spectral properties of the photon pair sources. We show that each of these modifications has some impact on the joint spectra measured. The resulting joint spectra are very complex, highlighting the importance of performing measurements rather than relying on calculations alone. Lastly, we demonstrate a fast switch for the manipulation of single photons. The switch uses the optical Kerr effect to rotate the polarization state of single photons at ultrafast timescales. The implementation of this switch is experimentally straightforward, using a commercial, single mode fiber as the Kerr medium and nJ level pump powers. We operate at an 80 MHz repetition rate and measure 97% switching efficiency, picosecond level switching speed, and approximately 800:1 signal to noise ratio from the operation.
Controlling the spatial and spectral–temporal properties of photon pairs produced in artificially structured materials is fundamental to the realization of numerous photonic quantum information applications. Tailoring the joint spectral properties of photon pairs is of particular importance for applications relying on time–energy entanglement, high-visibility interference, and heralding. Yet measuring the joint spectral properties is a time-consuming task requiring coincidence counting, typically resulting in low-resolution spectra with a poor signal-to-noise ratio. In this work we capture the joint spectral correlations of photon pairs that would be produced in optical fibers with unprecedented speed, resolution, and signal-to-noise ratio, using a scheme based on stimulated four-wave mixing. We also illustrate that this technique can be used in engineering joint spectral correlations, making it a powerful tool for studying quantum states.