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

Quantum Correlations using Strong Optical Pulses in Rare Earth Ion Doped Crystals

Patrick M. Ledingham, Jevon J. Longdell

Published Jan 1, 2011• 1 citation
Publisher

Abstract

We use photon echo based protocols with cryogenic rare earth ion dopants to create photon streams with time separated correlations. Theoretically, these streams are non-classically correlated. We present progress toward realizing this correlation.
DOI
10.1364/cleo_at.2011.jthb3

Related papers

Nonclassical photon-pair source based on noiseless photon echo

Duo-Lun Chen, Zong‐Quan Zhou, Chuan-Feng Li +1 more

The Duan-Lukin-Cirac-Zoller (DLCZ) scheme is a potential method to establish remote entanglements and realize large-scale quantum networks. Here we propose a DLCZ-like scheme based on the noiseless photon echo in rare-earth ion-doped crystals. Correlated photon pairs with a controllable delay can be created by the direct optical rephasing. Theoretical analysis indicates that the protocol is efficient in the low-optical-depth regime. This protocol could be feasibly implemented to establish long-lived quantum correlations between a photon and a spin-wave excitation in rare-earth ion-doped crystals.

arXiv:2304.13444•Physical Review A•Apr 25, 2023•1 citation

Photon echoes in an amplifying rare-earth ion-doped crystal

Vincent Crozatier, Guillaume Gorju, Fabien Bretenaker +4 more

In this contribution, we report on what is believed to be the first experimental demonstration of photon echoes in an amplifying rare-earth ion-doped crystal and highlighted the advantages of the process. It considerably improves the diffraction efficiency and the echo power in single shot, up to a factor 3 in our relatively low optical density sample.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jan 25, 2006•0 citations

Quantum Nano-photonic Devices Based on Rare-earth Ions

Andrei Faraon

I present our progress towards developing optical quantum memories based on photonic crystal cavities fabricated in rare-earth-doped crystals. These devices exhibit large spontaneous emission rate enhancement, enabling optical control of single rare-earth ion quantum bits.

Conference on Lasers and Electro-Optics•Jan 1, 2017•0 citations

Photon echoes in an amplifying rare-earth ion-doped crystal

Vincent Crozatier, Guillaume Gorju, F. de Sèze +3 more

We report, on the first experimental demonstration of photon echoes in an amplifying rare-earth ion-doped crystal. Population inversion is achieved via optical pumping yielding higher power photon echoes, with an energy gain up to 5.

Conference on Lasers and Electro-Optics•Jan 1, 2005•0 citations

Storing Quantum Correlations in Different Rare Earth Ion-doped Solids. A Tale of Two Memories.

Jacob H. Davidson

Quantum networks of the future will be required to span the globe and interconnect many different real world systems employed by different commercial, academic, and government users. Thus, an important measure of such a network's capacity will be its ability to interact with and distribute entanglement among different mediums and devices with potentially disparate properties. Few experiments have to date shown this sort of interconnectivity between different systems with different atomic species. Here I will present our demonstration of a system in which we store two correlated photons in solid state quantum memories implemented in different rare earth ion-doped materials using the atomic frequency comb protocol. The photon pairs are generated through a spontaneous parametric down-conversion process with their wavelengths chosen to be compatible with quantum repeater implementations. One member, with a wavelength at 795 nm, is stored in an Tm:LiNbO3 crystal while, simultaneously, the other member, generated at 1535 nm wavelength, is stored in an amorphous erbium doped optical fiber. The measured cross-correlation function between the recalled photons is g(2) = 16 +/- 2, which verifies that the non-classical correlations are preserved and were present during the storage of both photons. The two storage mediums are diverse not only in terms of their different photon acceptance wavelengths, but also with regards to the material properties as hosts for the dopant rare-earth ions. Our results show that quantum nodes and networks based on fundamentally different systems can be interfaced to distribute entanglement.

•Jun 4, 2018•0 citations

Towards Light Storage and Retrieval from a Solid-State Atomic Ensemble at the Single-Photon Level

Kumel H. Kagalwala, Elizabeth A. Goldschmidt, Sergey V. Polyakov +1 more

We report progress towards the implementation of a quantum memory in a rare-earth ion-doped crystal. Toward that goal, we demonstrate a narrowband spectral filter for our memory, and measure the optical correlations.

Conference on Lasers and Electro-Optics•Jan 1, 2018•0 citations
The Duan-Lukin-Cirac-Zoller (DLCZ) scheme is a potential method to establish remote entanglements and realize large-scale quantum networks. Here we propose a DLCZ-like scheme based on the noiseless photon echo in rare-earth ion-doped crystals. Correlated photon pairs with a controllable delay can be created by the direct optical rephasing. Theoretical analysis indicates that the protocol is efficient in the low-optical-depth regime. This protocol could be feasibly implemented to establish long-lived quantum correlations between a photon and a spin-wave excitation in rare-earth ion-doped crystals.
Quantum networks of the future will be required to span the globe and interconnect many different real world systems employed by different commercial, academic, and government users. Thus, an important measure of such a network's capacity will be its ability to interact with and distribute entanglement among different mediums and devices with potentially disparate properties. Few experiments have to date shown this sort of interconnectivity between different systems with different atomic species. Here I will present our demonstration of a system in which we store two correlated photons in solid state quantum memories implemented in different rare earth ion-doped materials using the atomic frequency comb protocol. The photon pairs are generated through a spontaneous parametric down-conversion process with their wavelengths chosen to be compatible with quantum repeater implementations. One member, with a wavelength at 795 nm, is stored in an Tm:LiNbO3 crystal while, simultaneously, the other member, generated at 1535 nm wavelength, is stored in an amorphous erbium doped optical fiber. The measured cross-correlation function between the recalled photons is g(2) = 16 +/- 2, which verifies that the non-classical correlations are preserved and were present during the storage of both photons. The two storage mediums are diverse not only in terms of their different photon acceptance wavelengths, but also with regards to the material properties as hosts for the dopant rare-earth ions. Our results show that quantum nodes and networks based on fundamentally different systems can be interfaced to distribute entanglement.