Cold-Atom Temporally Multiplexed Quantum Memory with Cavity-Enhanced Noise Suppression

Physical Review Letters
Lukas HellerHugues de Riedmatten

Abstract

Future quantum repeater architectures, capable of efficiently distributing information encoded in quantum states of light over large distances, will benefit from multiplexed photonic quantum memories. In this work we demonstrate a temporally multiplexed quantum repeater node in a laser-cooled cloud of ^{87}Rb atoms. We employ the Duan-Lukin-Cirac-Zoller protocol where pairs of photons and single collective spin excitations (so-called spin waves) are created in several temporal modes using a train of write pulses. To make the spin waves created in different temporal modes distinguishable and enable selective readout, we control the dephasing and rephasing of the spin waves by a magnetic field gradient, which induces a controlled reversible inhomogeneous broadening of the involved atomic hyperfine levels. We demonstrate that by embedding the atomic ensemble inside a low finesse optical cavity, the additional noise generated in multimode operation is strongly suppressed. By employing feed forward readout, we demonstrate distinguishable retrieval of up to 10 temporal modes. For each mode, we prove nonclassical correlations between the first and second photon. Furthermore, an enhancement in rates of correlated photon pairs is observ...Continue Reading

References

Oct 10, 2006·Physical Review Letters·H de RiedmattenH J Kimble
May 16, 2007·Physical Review Letters·Jonathan SimonVladan Vuletić
Aug 7, 2007·Physical Review Letters·Christoph SimonNicolas Gisin
Dec 17, 2008·Nature·Hugues de RiedmattenNicolas Gisin
Aug 6, 2009·Optics Express·S-Y LanA Kuzmich
Oct 27, 2010·Nature Communications·Imam UsmaniNicolas Gisin
Jan 14, 2011·Nature·Christoph ClausenNicolas Gisin
Jan 14, 2011·Nature·Erhan SaglamyurekWolfgang Tittel
Feb 3, 2011·Nature Communications·M HosseiniB C Buchler
Jun 21, 2012·Optics Express·Quentin GlorieuxPaul D Lett
Feb 4, 2014·Physical Review Letters·Erwan BimbardPhilippe Grangier
Feb 24, 2015·Physical Review Letters·Dong-Sheng DingGuang-Can Guo
Jul 22, 2015·Physical Review Letters·Mustafa GündoğanHugues de Riedmatten
Nov 10, 2015·Physical Review Letters·Boris AlbrechtHugues de Riedmatten
Dec 24, 2016·Physical Review Letters·Alexey TiranovNicolas Gisin
Feb 25, 2017·Physical Review Letters·Radosław ChrapkiewiczWojciech Wasilewski
Jun 10, 2017·Physical Review Letters·Kutlu KutluerHugues de Riedmatten
Jun 10, 2017·Physical Review Letters·Cyril LaplaneMikael Afzelius
Dec 17, 2017·Nature Communications·Michał ParniakWojciech Wasilewski
Mar 24, 2018·Physical Review Letters·Pau FarreraHugues de Riedmatten
Mar 2, 2019·Physical Review Letters·Michał ParniakWojciech Wasilewski

❮ Previous
Next ❯

Citations

Mar 23, 2021·Physical Review Letters·Xu-Jie WangJian-Wei Pan
Feb 6, 2022·Nature Communications·Mateusz MazelanikMichał Parniak

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.