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

Efficient generation of heralded temporal mode entanglement

Aneesh Ramaswamy, Nageswara S. V. Rao, Joseph C. Chapman, Muneer Alshowkan, Nicholas A. Peters

Published Jan 1, 2026• 0 citations
Publisher

Abstract

We propose a scheme to generate temporal mode entanglement using parametric downconversion with a pulsed laser. We present a proof-of-concept generation of heralded Bell pairs using pulse modulation.
DOI
10.1364/cleo_fs.2026.fm3b.2

Related papers

Multiple pulse-mode Bell states heralded via entanglement swapping

Sofiane Merkouche, Valérian Thiel, Alex O. C. Davis +1 more

A novel scheme is presented for simultaneous heralding of multiple distinct pulse-mode entangled states via frequency-resolved Bell-state measurements. The heralded states are verified using spectral measurements and two-photon interference.

Conference on Lasers and Electro-Optics•Jan 1, 2021•0 citations

Generation of Parametric Downconversion in Controlled Spatio-Temporal Modes

Alfred B. U’Ren, Konrad Banaszek, Ian A. Walmsley

We present an analysis of the spatio-temporal Schmidt modes of photon pairs generated by parametric downconversion. Efficient spatio-temporal modal control is important for the implementation of quantum information technologies and for managing distinguishing information.

Nonlinear Optics•Jan 1, 2002•0 citations

Time/frequency high-dimensional entanglement via engineered parametric downconversion

Francesco Graffitti, Alexander Pickston, Peter Barrow +4 more

We introduce and experimentally benchmark a new scheme for generating frequency-entangled photon pairs in engineered parametric downconversion processes. We discuss how this technique can be used to easily generate high-dimensional entangled bi-photon states.

Quantum Information and Measurement (QIM)•Jan 1, 2019•0 citations

Temporal Multiplexing toward Periodic and Deterministic Single-Photon Sources

Fumihiro Kaneda, Bradley Christensen, Jia Jun Wong +3 more

Utilizing time multiplexing of a heralded single-photon source based on spontaneous parametric downconversion pumped by periodic laser pulses, we observed large enhancements in the single-photon probability.

•Jan 1, 2015•1 citation

Heralded generation of multiphoton entanglement

Philip John Walther, Markus Aspelmeyer, Anton Zeilinger

We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.

arXiv:0804.2384•Physical Review A•Jan 12, 2007•45 citations

The Role of Ultrafast Shaped Pulses in Classical and Quantum Optics

Ian A. Walmsley, Anderson, Matthew, Konrad Banaszek +2 more

This report presents the results of studies of the generation and characterization of Electron Paramagnetic Resonance (EPR) and the entangled bi-photon state using optical parametric downconversion (PDC) with ultrashort-duration pump pulses. The authors have advanced a method of generating photon pairs that are highly entangled in their continuous space-time degree of freedom and have developed theoretical tools for quantifying the degree of entanglement for this and other continuum-variable systems. In addition, they have shown for the first time the violation of a Bell-type inequality for the EPR state generated in parametric downconversion. The studies also show, theoretically, that it is possible to design sources such that the photon entanglement causes complete nonlocal cancellation of dispersion of arbitrary order, and demonstrate the increase in visibility using properly mode-matched photons. In addition, the authors have analyzed the effects of nonmeasured degrees of freedom of photons generated by PDC on the basic elements of linear optical quantum logic gates, such as a prototypical Bell-state analyzer. The results have implications for novel methods of quantum communications using both entangled and unentangled modes and photons. A list of 13 related manuscripts is included.

•May 26, 2003•0 citations
We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.
This report presents the results of studies of the generation and characterization of Electron Paramagnetic Resonance (EPR) and the entangled bi-photon state using optical parametric downconversion (PDC) with ultrashort-duration pump pulses. The authors have advanced a method of generating photon pairs that are highly entangled in their continuous space-time degree of freedom and have developed theoretical tools for quantifying the degree of entanglement for this and other continuum-variable systems. In addition, they have shown for the first time the violation of a Bell-type inequality for the EPR state generated in parametric downconversion. The studies also show, theoretically, that it is possible to design sources such that the photon entanglement causes complete nonlocal cancellation of dispersion of arbitrary order, and demonstrate the increase in visibility using properly mode-matched photons. In addition, the authors have analyzed the effects of nonmeasured degrees of freedom of photons generated by PDC on the basic elements of linear optical quantum logic gates, such as a prototypical Bell-state analyzer. The results have implications for novel methods of quantum communications using both entangled and unentangled modes and photons. A list of 13 related manuscripts is included.