Many-photon quantum entanglement

Deliverables

QLUSTER website

QLUSTER website, logo, fact-sheets, and virtual research environment

1st QLUSTER workshop

Organization of and report on the QLUSTER workshops

2nd QLUSTER workshop

Organization of and report on the QLUSTER workshops

Delay-loop based linear cluster states

Demonstration of high rate linear cluster state generation 515 photons report on scalability and possible improvements

Optimal spin coherence times

Report on the spin coherence time under optimal pulse sequences and nuclear spin bath preparation

Development of an optimal single photon source

The benchmark must include the brightness (goal: >65%), purity (goal: g2(0) < 10-3), repetition rate (goal: 500 MHz)

Publications

Two-Photon Interference of Single Photons from Dissimilar Sources

Author(s): Christian Dangel; Jonas Schmitt; Anthony J. Bennett; Kai Müller; Jonathan J. Finley
Published in: Phys. Rev. Applied, Issue 18, 2022, Page(s) 054005, ISSN 2331-7019
Publisher: APS
DOI: 10.1103/physrevapplied.18.054005

Giant optical polarisation rotations induced by a single quantum dot spin

Author(s): E. Mehdi, M. Gundín, C. Millet, N. Somaschi, A. Lemaître, I. Sagnes, L. Le Gratiet, D. A. Fioretto, N. Belabas, O. Krebs, P. Senellart & L. Lanco
Published in: Nature Communications, Issue 15, 2024, Page(s) 598, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/s41467-023-44651-8

Wafer-scale epitaxial modulation of quantum dot density

Author(s): N. Bart, C. Dangel, P. Zajac, N. Spitzer, J. Ritzmann, M. Schmidt, H. G. Babin, R. Schott, S. R. Valentin, S. Scholz, Y. Wang, R. Uppu, D. Najer, M. C. Löbl, N. Tomm, A. Javadi, N. O. Antoniadis, L. Midolo, K. Müller, R. J. Warburton, P. Lodahl, A. D. Wieck, J. J. Finley & A. Ludwig
Published in: Nature Communications, Issue 13, 2022, Page(s) 1633, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/s41467-022-29116-8

Cavity-enhanced excitation of a quantum dot in the picosecond regime

Author(s): Alisa Javadi, Natasha Tomm, Nadia O Antoniadis, Alistair J Brash, Rüdiger Schott, Sascha R Valentin, Andreas D Wieck, Arne Ludwig and Richard J Warburton
Published in: New J. Phys., Issue 25, 2023, Page(s) 093027, ISSN 1367-2630
Publisher: Institute of Physics Publishing
DOI: 10.1088/1367-2630/acf33b

Enhanced Electron-Spin Coherence in a GaAs Quantum Emitter

Author(s): Giang N. Nguyen, Clemens Spinnler, Mark R. Hogg, Liang Zhai, Alisa Javadi, Carolin A. Schrader, Marcel Erbe, Marcus Wyss, Julian Ritzmann, Hans-Georg Babin, Andreas D. Wieck, Arne Ludwig, and Richard J. Warburton
Published in: Phys. Rev. Lett., Issue 131, 2023, Page(s) 210805, ISSN 1079-7114
Publisher: APS
DOI: 10.1103/physrevlett.131.210805

Artificial Coherent States of Light by Multiphoton Interference in a Single-Photon Stream

Author(s): P. Steindl, H. Snijders, G. Westra, E. Hissink, K. Iakovlev, S. Polla, J. A. Frey, J. Norman, A. C. Gossard, J. E. Bowers, D. Bouwmeester, W. Löffler
Published in: Physical Review Letters, Issue 126/14, 2021, Page(s) 143601, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.126.143601

Tuning the Mode Splitting of a Semiconductor Microcavity with Uniaxial Stress

Author(s): Natasha Tomm, Alexander R. Korsch, Alisa Javadi, Daniel Najer, Rüdiger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig, and Richard J. Warburton
Published in: Phys. Rev. Applied, 2021, ISSN 2331-7019
Publisher: American Physical Society
DOI: 10.1103/physrevapplied.15.054061

Error-correcting entanglement swapping using a practical logical photon encoding

Author(s): P. Hilaire; Edwin Barnes; Sophia E. Economou; Frédéric Grosshans
Published in: Physical Review A, Issue 104, 2021, Page(s) 052623, ISSN 2469-9926
Publisher: APS
DOI: 10.1103/physreva.104.052623

Sequential generation of linear cluster states from a single photon emitter

Author(s): D. Istrati, Y. Pilnyak, J. C. Loredo, C. Antón, N. Somaschi, P. Hilaire, H. Ollivier, M. Esmann, L. Cohen, L. Vidro, C. Millet, A. Lemaître, I. Sagnes, A. Harouri, L. Lanco, P. Senellart, H. S. Eisenberg
Published in: Nature Communications, Issue 11/1, 2020, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/s41467-020-19341-4

Resource requirements for efficient quantum communication using all-photonic graph states generated from a few matter qubits

Author(s): Paul Hilaire, Edwin Barnes, Sophia E. Economou
Published in: Quantum, Issue 5, 2021, Page(s) 397, ISSN 2521-327X
Publisher: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/q-2021-02-15-397

Photon-number entanglement generated by sequential excitation of a two-level atom

Author(s): Stephen C. Wein, Juan C. Loredo, Maria Maffei, Paul Hilaire, Abdelmounaim Harouri, Niccolo Somaschi, Aristide Lemaître, Isabelle Sagnes, Loïc Lanco, Olivier Krebs, Alexia Auffèves, Christoph Simon, Pascale Senellart & Carlos Antón-Solanas
Published in: Nature Photonics, 2022, ISSN 1749-4885
Publisher: Nature Pub. Group
DOI: 10.1038/s41566-022-00979-z

Optically driving the radiative Auger transition

Author(s): Clemens Spinnler, Liang Zhai, Giang N. Nguyen, Julian Ritzmann, Andreas D. Wieck, Arne Ludwig, Alisa Javadi, Doris E. Reiter, Paweł Machnikowski, Richard J. Warburton, and Matthias C. Löbl
Published in: Nat Commun, 2021, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/s41467-021-26875-8

Quantum repeaters: From quantum networks to the quantum internet

Author(s): Koji Azuma, Sophia E. Economou, David Elkouss, Paul Hilaire, Liang Jiang, Hoi-Kwong Lo, and Ilan Tzitrin
Published in: Rev. Mod. Phys., Issue 95, 2023, Page(s) 045006, ISSN 1539-0756
Publisher: APS
DOI: 10.1103/revmodphys.95.045006

Resonant Two-Laser Spin-State Spectroscopy of a Negatively Charged Quantum-Dot–Microcavity System with a Cold Permanent Magnet

Author(s): P. Steindl; T. van der Ent; H. van der Meer; J.A. Frey; J. Norman; J.E. Bowers; D. Bouwmeester; W. Löffler
Published in: Phys. Rev. Applied, Issue 20, 2023, Page(s) 014026, ISSN 2331-7019
Publisher: APS
DOI: 10.1103/physrevapplied.20.014026

Deterministic Generation of Entangled Photonic Cluster States from Quantum Dot Molecules

Author(s): Arian Vezvaee; Paul Hilaire; Matthew F. Doty; Sophia E. Economou
Published in: Phys. Rev. Applied, Issue 18, 2022, Page(s) L061003, ISSN 2331-7019
Publisher: APS
DOI: 10.1103/physrevapplied.18.l061003

Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration

Author(s): Rafail Frantzeskakis; Chenxu Liu; Zahra Raissi; Edwin Barnes; Sophia E. Economou
Published in: Phys. Rev. Research, Issue 5, 2023, Page(s) 023124, ISSN 2643-1564
Publisher: APS
DOI: 10.1103/physrevresearch.5.023124

Linear Optical Logical Bell State Measurements with Optimal Loss-Tolerance Threshold

Author(s): Paul Hilaire; Yaron Castor; Edwin Barnes; Sophia E. Economou; Frédéric Grosshans
Published in: PRX Quantum, Issue 4, 2023, Page(s) 040322, ISSN 2691-3399
Publisher: APS
DOI: 10.1103/prxquantum.4.040322

Witnessing quantum correlations in a nuclear ensemble via an electron spin qubit

Author(s): Dorian Gangloff; Leon Zaporski; J. H. Bodey; Clara Bachorz; Daniel M. Jackson; Gabriel Ethier-Majcher; Constantin Lang; Edmund Clarke; Maxime Hugues; Claire Le Gall; Mete Atatüre
Published in: Nature Physics, Issue 17, 2021, Page(s) 1247, ISSN 1745-2473
Publisher: Nature Publishing Group
DOI: 10.17863/cam.78403

Cavity-enhanced single-shot readout of a quantum dot spin within 3 nanoseconds

Author(s): Nadia O. Antoniadis, Mark R. Hogg, Willy F. Stehl, Alisa Javadi, Natasha Tomm, Rüdiger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig & Richard J. Warburton
Published in: Nature Communications, Issue 14, 2023, Page(s) 3977, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/s41467-023-39568-1

Stimulated Generation of Indistinguishable Single Photons from a Quantum Ladder System

Author(s): Friedrich Sbresny; Lukas Hanschke; Eva Schöll; William Rauhaus; Bianca Scaparra; Katarina Boos; Eduardo Zubizarreta Casalengua; Hubert Riedl; Elena del Valle; Jonathan J. Finley; Klaus D. Jöns; Kai Müller
Published in: issn: 0008-1981, Issue 128, 2022, Page(s) 093603, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.128.093603

A bright and fast source of coherent single photons

Author(s): Natasha Tomm, Alisa Javadi, Nadia Olympia Antoniadis, Daniel Najer, Matthias Christian Löbl, Alexander Rolf Korsch, Rüdiger Schott, Sascha René Valentin, Andreas Dirk Wieck, Arne Ludwig, Richard John Warburton
Published in: Nature Nanotechnology, 2021, ISSN 1748-3387
Publisher: Nature Publishing Group
DOI: 10.1038/s41565-020-00831-x

On the importance of antimony for temporal evolution of emission from self-assembled (InGa)(AsSb)/GaAs quantum dots on GaP(001)

Author(s): Petr Steindl; Petr Steindl; Elisa M. Sala; Elisa M. Sala; Benito Alén; Dieter Bimberg; Dieter Bimberg; Petr Klenovský
Published in: New Journal of Physics, Issue 23, 2021, Page(s) 103029, ISSN 1367-2630
Publisher: Institute of Physics Publishing
DOI: 10.48550/arxiv.2101.06299

Time-crystalline behavior in central-spin models with Heisenberg interactions

Author(s): Rafail Frantzeskakis; John Van Dyke; Leon Zaporski; Dorian A. Gangloff; Claire Le Gall; Mete Atatüre; Sophia E. Economou; Edwin Barnes
Published in: Phys. Rev. B, Issue 108, 2023, Page(s) 075302, ISSN 2469-9969
Publisher: APS
DOI: 10.1103/physrevb.108.075302

Quantum Dot Molecule Devices with Optical Control of Charge Status and Electronic Control of Coupling

Author(s): Frederik Bopp; Jonathan Rojas; Natalia Revenga; Hubert Riedl; Friedrich Sbresny; Katarina Boos; Tobias Simmet; Arash Ahmadi; David Gershoni; Jacek Kasprzak; Arne Ludwig; Stephan Reitzenstein; Andreas Wieck; Dirk Reuter; Kai Müller; Jonathan J. Finley
Published in: Advanced Quantum Technologies, Issue 5, 2022, Page(s) 202200049, ISSN 2511-9044
Publisher: Wiley
DOI: 10.1002/qute.202200049

Structural properties of graded In<sub> x </sub>Ga 1−x As metamorphic buffer layers for quantum dots emitting in the telecom bands

Author(s): Bianca Scaparra; Akhil Ajay; Pavel S Avdienko; Yuyang Xue; Hubert Riedl; Paul Kohl; Björn Jonas; Beatrice Costa; Elise Sirotti; Paul Schmiedeke; Viviana Villafañe; Ian D Sharp; Eugenio Zallo; Gregor Koblmüller; Jonathan J Finley; Kai Müller
Published in: Mater. Quantum. Technol., Issue 3, 2023, Page(s) 035004, ISSN 2633-4356
Publisher: IOP
DOI: 10.1088/2633-4356/aced32

High-rate entanglement between a semiconductor spin and indistinguishable photons

Author(s): N. Coste; D. A. Fioretto; N. Belabas; S. C. Wein; P. Hilaire; R. Frantzeskakis; M. Gundin; B. Goes; N. Somaschi; M. Morassi; A. Lemaître; I. Sagnes; A. Harouri; S. E. Economou; A. Auffeves; O. Krebs; L. Lanco; P. Senellart
Published in: Nature Photonics, Issue 17, 2023, Page(s) 582, ISSN 1749-4893
Publisher: Nature
DOI: 10.1038/s41566-023-01186-0

Coherent driving of direct and indirect excitons in a quantum dot molecule

Author(s): Frederik Bopp; Johannes Schall; Nikolai Bart; Florian Vögl; Charlotte Cullip; Friedrich Sbresny; Katarina Boos; Christopher Thalacker; Michelle Lienhart; Sven Rodt; Dirk Reuter; Arne Ludwig; Andreas D. Wieck; Stephan Reitzenstein; Kai Müller; Jonathan J. Finley
Published in: Phys. Rev. B, Issue 107, 2023, Page(s) 165426, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.107.165426

Pixel Super‐Resolution Interference Pattern Sensing Via the Aliasing Effect for Laser Frequency Metrology

Author(s): Lipeng Wan; Tianbao Yu; Daomu Zhao; Wolfgang Löffler
Published in: Laser & Photonics Reviews, Issue 17, 2023, Page(s) 2200994, ISSN 1863-8899
Publisher: Wiley
DOI: 10.1002/lpor.202200994

Extended polarized semiclassical model for quantum-dot cavity QED and its application to single-photon sources

Author(s): H. J. Snijders, D. N. L. Kok, M. F. van de Stolpe, J. A. Frey, J. Norman, A. C. Gossard, J. E. Bowers, M. P. van Exter, D. Bouwmeester, W. Löffler
Published in: Physical Review A, Issue 101/5, 2020, Page(s) 053811-1, ISSN 2469-9934
Publisher: American Physical Society
DOI: 10.1103/physreva.101.053811

Avoiding Leakage and Errors Caused by Unwanted Transitions in Lambda Systems

Author(s): Arian Vezvaee; Evangelia Takou; Paul Hilaire; Matthew F. Doty; Sophia E. Economou
Published in: PRX Quantum, Issue 4, 2023, Page(s) 030312, ISSN 2691-3399
Publisher: APS
DOI: 10.1103/prxquantum.4.030312

Bright Polarized Single-Photon Source Based on a Linear Dipole.

Author(s): S. E. Thomas; M. Billard; N. Coste; S. C. Wein; Priya; H. Ollivier; Olivier Krebs; L. Tazaïrt; A. Harouri; Aristide Lemaître; Isabelle Sagnes; Carlos Antón; Loïc Lanco; Loïc Lanco; N. Somaschi; J. C. Loredo; Pascale Senellart
Published in: Phys. Rev. Lett., Issue 126, 2021, Page(s) 233601, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.48550/arxiv.2007.04330

Many-Body Singlet Prepared by a Central-Spin Qubit

Author(s): Leon Zaporski, Stijn R. de Wit, Takuya Isogawa, Martin Hayhurst Appel, Claire Le Gall, Mete Atatüre, and Dorian A. Gangloff
Published in: PRX Quantum, Issue 4, 2023, Page(s) 040343, ISSN 2691-3399
Publisher: APS
DOI: 10.1103/prxquantum.4.040343

Optimal purification of a spin ensemble by quantum-algorithmic feedback

Author(s): Jackson, Daniel M.; Haeusler, Urs; Zaporski, Leon; Bodey, Jonathan H.; Shofer, Noah; Clarke, Edmund; Hugues, Maxime; Atatüre, Mete; Le Gall, Claire; Gangloff, Dorian A.
Published in: Physical Review X, Issue 12, 2023, Page(s) 031014, ISSN 2160-3308
Publisher: American Physical Society
DOI: 10.1103/physrevx.12.031014

Probing the dynamics and coherence of a semiconductor hole spin via acoustic phonon-assisted excitation

Author(s): Coste, N.; Gundin, M.; Fioretto, D.; Thomas, S. E.; Millet, C.; Medhi, E.; Gundin, M.; Somaschi, N.; Morassi, M.; Pont, M.; Lemaitre, A.; Belabas, N.; Krebs, O.; Lanco, L.; Senellart, P.
Published in: Quantum Sci. Technol., Issue 8, 2023, Page(s) 025021, ISSN 2058-9565
Publisher: IOP
DOI: 10.1088/2058-9565/acbd6a

Quantum sensing of a coherent single spin excitation in a nuclear ensemble

Author(s): D. M. Jackson, D. A. Gangloff, J. H. Bodey, L. Zaporski, C. Bachorz, E. Clarke, M. Hugues, C. Le Gall, M. Atatüre
Published in: Nature Physics, 2021, ISSN 1745-2473
Publisher: Nature Publishing Group
DOI: 10.1038/s41567-020-01161-4

Cross-Polarization-Extinction Enhancement and Spin-Orbit Coupling of Light for Quantum-Dot Cavity Quantum Electrodynamics Spectroscopy

Author(s): P. Steindl; J.A. Frey; J. Norman; J.E. Bowers; D. Bouwmeester; W. Löffler
Published in: Phys. Rev. Applied, Issue 19, 2023, Page(s) 064082, ISSN 2331-7019
Publisher: APS
DOI: 10.1103/physrevapplied.19.064082

Dimension-Dependent Phenomenological Model of Excitonic Electric Dipole in InGaAs Quantum Dots

Author(s): Steindl, P.; Klenovsky, P.; Fedosyuk, V.M.; Saiko, A.P.; Gremenok, V.F.; Demyanov, S.E.; Mudryi, A.V.; Karpinsky, D.V.; Bushinsky, M.V.
Published in: Nanomaterials, Issue 12, 2022, Page(s) 719, ISSN 2079-4991
Publisher: MDPI
DOI: 10.3390/nano12040719

Near-deterministic hybrid generation of arbitrary photonic graph states using a single quantum emitter and linear optics

Author(s): Paul Hilaire; Leonid Vidro; Hagai S. Eisenberg; Sophia E. Economou
Published in: Crossref, Issue 7, 2023, Page(s) 992, ISSN 2521-327X
Publisher: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/q-2023-04-27-992

Ideal refocusing of an optically active spin qubit under strong hyperfine interactions

Author(s): Zaporski, Leon; Shofer, Noah; Bodey, Jonathan H.; Manna, Santanu; Gillard, George; Jackson, Daniel M.; Appel, Martin Hayhurst; Schimpf, Christian; da Silva, Saimon Covre; Jarman, John; Delamare, Geoffroy; Park, Gunhee; Haeusler, Urs; Chekhovich, Evgeny A.; Rastelli, Armando; Gangloff, Dorian A.; Atatüre, Mete; Gall, Claire Le
Published in: Nature Nanotechnology, Issue 18, 2023, Page(s) 257, ISSN 1748-3395
Publisher: Nature
DOI: 10.1038/s41565-022-01282-2

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