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Electro-optics of semiconductor nanostructures

English title Electro-optics of semiconductor nanostructures
Applicant Warburton Richard
Number 156637
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Condensed Matter Physics
Start/End 01.10.2014 - 30.09.2017
Approved amount 790'616.00
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Keywords (4)

quantum dot; microcavity; spin; photonics

Lay Summary (German)

Lead
Ein nanostrukturierter Halbleiter hat potentiell nützliche Quanteneigenschaften. Dieses Projekt hat das Ziel, ein kohärentes Spin in einem Halbleiter zu entwickeln, die Wechselwirkung zwischen Licht und dem Halbleiter zu erhöhen und eine Einzelphotonenquelle bei der Rb-Wellenlänge zu entwerfen.
Lay summary

Ein Halbleiterquantendot verhält sich wie ein künstliches Atom. Ein einzelner Quantendot stellt zum Beispiel einen Emitter von einzelnen Photonen dar. Darüberhinaus kann ein Quantendot mit einem Elektron geladen werden und das resultierende Spin als Quantenbit benutzt werden. Leider ist die Kohärenz des Spins durch die komplexe Wechselwirkungen zwischen dem Quantendot und der Halbleiterumgebung stark begrenzt. Die Experimente sind auch durch die schwache Wechselwirkung mit Licht erschwert und die Wellenlängen sind typischerweise eigenartig und passen nicht zu den Wellenlängen von anderen Quantensystemen. Dieses Projekt hat die Ziele, erstens ein viel robusteres Spin-Qubit zu entwickeln; zweitens, mittels einer optischen Cavity die Wechselwirkung zwischen einem Quantendot und Licht zu erhöhen; drittens, eine Quelle von einzelnen Photonen bei der Rb-Wellenlänge zu entwerfen. Auf diese Weise lassen sich Konzepte in Quanteninformation in einem Halbleiter umsetzen. Die Cavities, die während dieses Projektes entwickelt werden, finden Anwendungen auch in anderen Gebieten. 

 

Direct link to Lay Summary Last update: 03.11.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Coherent and robust high-fidelity generation of a biexciton in a quantum dot by rapid adiabatic passage
Kaldewey Timo, Lueker Sebastian, Kuhlmann Andreas V., Valentin Sascha R., Ludwig Arne, Wieck Andreas D., Reiter Doris E., Kuhn Tilmann, Warburton Richard J. (2017), Coherent and robust high-fidelity generation of a biexciton in a quantum dot by rapid adiabatic passage, in PHYSICAL REVIEW B, 95(16), 161302(R).
Demonstrating the decoupling regime of the electron-phonon interaction in a quantum dot using chirped optical excitation
Kaldewey Timo, Lueker Sebastian, Kuhlmann Andreas V., Valentin Sascha R., Chauveau Jean-Michel, Ludwig Arne, Wieck Andreas D., Reiter Doris E., Kuhn Tilmann, Warburton Richard J. (2017), Demonstrating the decoupling regime of the electron-phonon interaction in a quantum dot using chirped optical excitation, in PHYSICAL REVIEW B, 95(24), 241306.
Fabrication of mirror templates in silica with micron-sized radii of curvature
Najer Daniel, Renggli Martina, Riedel Daniel, Starosielec Sebastian, Warburton Richard J. (2017), Fabrication of mirror templates in silica with micron-sized radii of curvature, in APPLIED PHYSICS LETTERS, 110(1), 011101.
Resonant driving of a single photon emitter embedded in a mechanical oscillator
Munsch Mathieu, Kuhlmann Andreas V., Cadeddu Davide, Gerard Jean-Michel, Claudon Julien, Poggio Martino, Warburton Richard J. (2017), Resonant driving of a single photon emitter embedded in a mechanical oscillator, in NATURE COMMUNICATIONS, 8, 76.
Simple Atomic Quantum Memory Suitable for Semiconductor Quantum Dot Single Photons
Wolters Janik, Buser Gianni, Horsley Andrew, Beguin Lucas, Jockel Andreas, Jahn Jan-Philipp, Warburton Richard J., Treutlein Philipp (2017), Simple Atomic Quantum Memory Suitable for Semiconductor Quantum Dot Single Photons, in PHYSICAL REVIEW LETTERS, 119(6), 060502.
A fiber-coupled quantum-dot on a photonic tip
Cadeddu Davide, Teissier Jean, Braakman Floris R., Gregersen Niels, Stepanov Petr, Gerard Jean-Michel, Claudon Julien, Warburton Richard J., Poggio Martino, Munsch Mathieu (2016), A fiber-coupled quantum-dot on a photonic tip, in APPLIED PHYSICS LETTERS, 108(1), 011112.
A tunable fiber-coupled optical cavity for agile enhancement of detector absorption
Heath Robert M., Tanner Michael G., Kirkwood Robert A., Miki Shigehito, Warburton Richard J., Hadfield Robert H. (2016), A tunable fiber-coupled optical cavity for agile enhancement of detector absorption, in JOURNAL OF APPLIED PHYSICS, 120(11), 113101.
Decoupling a hole spin qubit from the nuclear spins
Prechtel Jonathan H., Kuhlmann Andreas V., Houel Julien, Ludwig Arne, Valentin Sascha R., Wieck Andreas D., Warburton Richard J. (2016), Decoupling a hole spin qubit from the nuclear spins, in NATURE MATERIALS, 15(9), 981-986.
Role of the electron spin in determining the coherence of the nuclear spins in a quantum dot
Wuest Gunter, Munsch Mathieu, Maier Franziska, Kuhlmann Andreas V., Ludwig Arne, Wieck Andreas D., Loss Daniel, Poggio Martino, Warburton Richard J. (2016), Role of the electron spin in determining the coherence of the nuclear spins in a quantum dot, in NATURE NANOTECHNOLOGY, 11(10), 885-885.
An artificial Rb atom in a semiconductor with lifetime-limited linewidth
Jahn Jan-Philipp, Munsch Mathieu, Beguin Lucas, Kuhlmann Andreas V., Renggli Martina, Huo Yongheng, Ding Fei, Trotta Rinaldo, Reindl Marcus, Schmidt Oliver G., Rastelli Armando, Treutlein Philipp, Warburton Richard J. (2015), An artificial Rb atom in a semiconductor with lifetime-limited linewidth, in PHYSICAL REVIEW B, 92(24), 245439.
Electrically tunable hole g factor of an optically active quantum dot for fast spin rotations
Prechtel Jonathan H., Maier Franziska, Houel Julien, Kuhlmann Andreas V., Ludwig Arne, Wieck Andreas D., Loss Daniel, Warburton Richard J. (2015), Electrically tunable hole g factor of an optically active quantum dot for fast spin rotations, in PHYSICAL REVIEW B, 91(16), 165304.
Epitaxial lift-off for solid-state cavity quantum electrodynamics
Greuter Lukas, Najer Daniel, Kuhlmann Andreas V., Valentin Sascha R., Ludwig Arne, Wieck Andreas D., Starosielec Sebastian, Warburton Richard J. (2015), Epitaxial lift-off for solid-state cavity quantum electrodynamics, in JOURNAL OF APPLIED PHYSICS, 118(7), 075705.
Towards high-cooperativity strong coupling of a quantum dot in a tunable microcavity
Greuter Lukas, Starosielec Sebastian, Kuhlmann Andreas V., Warburton Richard J. (2015), Towards high-cooperativity strong coupling of a quantum dot in a tunable microcavity, in PHYSICAL REVIEW B, 92(4), 045302.
Transform-limited single photons from a single quantum dot
Kuhlmann Andreas V., Prechtel Jonathan H., Houel Julien, Ludwig Arne, Reuter Dirk, Wieck Andreas D., Warburton Richard J. (2015), Transform-limited single photons from a single quantum dot, in NATURE COMMUNICATIONS, 6, 8204.
Low-Loss Broadband Antenna for Efficient Photon Collection from a Coherent Spin in Diamond
Riedel D., Rohner D., Ganzhorn M., Kaldewey T., Appel P., Neu E., Warburton R. J., Maletinsky P. (2014), Low-Loss Broadband Antenna for Efficient Photon Collection from a Coherent Spin in Diamond, in PHYSICAL REVIEW APPLIED, 2(6), 064011.

Collaboration

Group / person Country
Types of collaboration
Professor Jean-Michel Gerard, CEA France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Wolfgang Hansen, Institute of Applied Physics, University of Hamburg Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Philipp Treutlein, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Dr Vincent Dolique, CNRS Laboratory for Advanced Materials, Lyon France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Dr Arne Ludwig, Ruhr University Bochum Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Christian Schonenberger, Nano-Electronics Lab, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Andreas Wieck, Ruhr University Bochum Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Khaled Karrai, Attocube Systems Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
- Industry/business/other use-inspired collaboration
Professor Martino Poggio, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Nicolas Sangouard, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Olivier Schmidt, Institute for Integrative Nanosciences, Dresden Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Dominik Zumbuhl, Quantum Coherence Lab, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Professor Daniel Loss, Condensed Matter Theory Group, Department of Physics, University of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Rank Prize "Solid State Nano-Photonics for Quantum Science and Technology" Talk given at a conference Emitter-Mediated Photon-Phonon Interaction 25.09.2017 Grasmere, Great Britain and Northern Ireland Söllner Immo Nathanael; Löbl Matthias Christian;
Rank Prize "Solid State Nano-Photonics for Quantum Science and Technology" Individual talk Spin-photon Interface with Solid-State Emitters 25.09.2017 Grasmere, Great Britain and Northern Ireland Warburton Richard;
Swiss Nanoscience Annual Meeting Individual talk Spin-photon Interface with Solid-State Emitters 07.09.2017 Lenzerheide, Switzerland Warburton Richard;
Flatlands 2017 Poster Photonics of a pristine MoS2 gated device 29.08.2017 Lausanne, Switzerland Roch Jonas Gael;
Conference on Quantum Nanophotonics Individual talk Spin-photon interface with solid-state emitters: semiconductor quantum dots and NV centres in diamond 21.08.2017 Monte Verita, Switzerland Warburton Richard;
Joint Annual Meeting of SPS and ÖPG Individual talk Quantum photonics with solid-state emitters 21.08.2017 Geneva, Switzerland Warburton Richard;
Conference on Quantum Nanophotonics Poster Emitter-Mediated Photon-Phonon Interaction 20.08.2017 Monte Verita, Switzerland Söllner Immo Nathanael; Löbl Matthias Christian;
Quantum Information Workshop 2017 Individual talk The solid-state spin-photon interface: semiconductor quantum dots, the NV centre in diamond 07.07.2017 Hongkong, Hongkong Warburton Richard;
Summer School on Quantum and Non-Linear Optics 2017 Individual talk Spintronics 19.06.2017 Gilleleje, Denmark Warburton Richard;
Optical Society of America Integrated Semiconductor Quantum Photonic Devices Incubator Individual talk The electron spin, the hole spin and the nuclear spins in a self-assembled quantum dot 18.06.2017 Washington DC, United States of America Warburton Richard;
SFB/TRR 142 “Tailored Nonlinear Photonics” 2nd International Workshop Individual talk Spins in a self-assembled quantum dot 14.02.2017 Paderborn, Germany Warburton Richard;
7th NCCR QSIT General Meeting Poster Photonics of the transition metal dichalcogenides 30.01.2017 Arosa, Switzerland Roch Jonas Gael;
Physikalisches Kolloquium Universität Duisburg Essen Individual talk Spins in a self-assembled quantum dot 18.01.2017 Duisburg, Germany Warburton Richard;
International Conference on the Physics of Semiconductors Individual talk Single self-assembled quantum dots for quantum hardware: performance limits set by charge noise and spin noise 31.07.2016 Beijing, China Warburton Richard;
Swiss Nanoconvention Individual talk Towards quantum hardware with a semiconductor quantum dot 30.06.2016 Basel, Switzerland Warburton Richard;
International Conference on the Quantum Dots Individual talk The electron spin, the hole spin and the nuclear spins in a self-assembled quantum dot 22.05.2016 Jeju, Korean Republic (South Korea) Warburton Richard;
WE-Heraeus Seminar on "Hybrid Systems for Quantum Optics" Individual talk An artificial Rb atom in a semiconductor with lifetime-limited linewidth 10.01.2016 Bad Honnef, Germany Warburton Richard;
Engineering of Quantum Emitter Properties Individual talk Single photons and single spins with semiconductor quantum dots: nuclear spin noise 17.12.2015 Linz, Austria Warburton Richard;
Advanced Workshop on Landau-Zener Interferometry and Quantum Control in Condensed Matter Individual talk Manipulating the nuclear spins in a semiconductor quantum dot with frequency-swept magnetic resonance pulses 29.09.2015 Izmir, Turkey Warburton Richard;
Fontiers in Nanophotonics Individual talk Photonics of a hole spin in a semiconductor quantum dot 20.08.2015 Monte Verita, Switzerland Warburton Richard;
Spintech Talk given at a conference Spin noise in a semiconductor quantum dot 10.08.2015 Basel, Switzerland Kuhlmann Andreas;
Rocky Mountain EPR Symposium Individual talk Spins in a semiconductor quantum dot 26.07.2015 Snowbird, United States of America Warburton Richard;
Workshop Spin coherence and relaxation phenomena in low-D systems Individual talk Single spins in self-assembled quantum dots 25.03.2015 Aachen, Germany Warburton Richard;
DPG Annual Meeting Talk given at a conference NMR on a single quantum dot 15.03.2015 Berlin, Germany Wüst Gunter Johannes;
Institute of Physics Quantum Dots Day 2015 Talk given at a conference Noise in quantum dots 12.01.2015 Cambridge, Great Britain and Northern Ireland Kuhlmann Andreas;


Associated projects

Number Title Start Funding scheme
175748 Electro-optics of semiconductor nanostructures 01.10.2017 Project funding (Div. I-III)
175748 Electro-optics of semiconductor nanostructures 01.10.2017 Project funding (Div. I-III)
132313 Electro-optics of semiconductor nanostructures 01.04.2011 Project funding (Div. I-III)
144979 Mode-locked laser for fast quantum state manipulation 01.01.2013 R'EQUIP
140311 Visitor program for Basel Center for Quantum Computing and Quantum Coherence ('QC2 Basel') 01.04.2012 Project funding (Div. I-III)

Abstract

Semiconductor heterostructures have uniquely attractive properties for electronics and opto-electronics. Semiconductors underpin information processing: electronic signals are manipulated at GHz frequencies and transmitted over large distances via optical fibres using semiconductor lasers and detectors. Potentially, these material advantages can be exploited in the creation of quantum devices which manipulate individual quantum states. Proposals exist in the areas of communication, metrology, imaging and information processing. An optically active semiconductor quantum dot is not just a potentially excellent single photon source but also a versatile host for a spin qubit. In fact optical techniques allow spin initialization, ultra-fast manipulation and single shot read-out. The performance however is limited by noise. Independent of quantum applications, understanding the qubit-environment interaction enables some core issues in condensed matter physics to be profitably revisited now that exquisite experiments can be performed on the nano-scale. One stumbling block to the successful application of a quantum dot spin as qubit is the loss of spin coherence via the hyperfine interaction with the nuclear spins of the host material, a central spin problem. In a quantum dot, the nuclear spin ensemble has a nano-scale and the breakdown of the Markov approximation leads to some unusual physics. This project aims to manipulate the nuclear spins in just one quantum dot with nuclear magnetic resonance (NMR) techniques. The central idea is to use NMR with frequency-swept pulses such that each nuclear spin, independent of the particular isotope or its exact quadrupole frequency, is addressed at some point in the frequency sweep. The physics focusses on adiabaticity versus Landau-Zener tunneling for manipulation, and Stueckelberg oscillations as a signature of quantum coherence. In particular, the aim is to determine the chemical composition, the nuclear spin temperature following laser-cooling, the quadrupole frequency distribution of all the main isotopes, and the nuclear spin coherence times. Additionally, the proposal involves determining and understanding the nuclear spin noise for electron spin, hole spin and exciton qubits. A hole spin is a particularly interesting case: the hyperfine interaction has a simple and benign form for a pure heavy-hole spin. The true hyperfine interaction for a real hole spin is unknown and the issue is surrounded by controversy. This project aims to determine all the key terms in the hole spin hyperfine interaction with a view to optimizing the spin coherence.A second stumbling block is the wavelength: semiconductor single photon sources presently emit in no-man's land, at wavelengths too short for efficient transport through an optical fibre but too short for compatibility with other quantum systems. One very attractive quantum system is Rb. Laser-cooled Rb atoms are very dense resulting in large photon absorption probabilities, extraordinarily cold resulting in long coherence times, and represent an ideal quantum system. A single Rb atom is however an inconvenient single photon source: single atom trapping is challenging, and the flux is low on account of the long spontaneous emission time. Conversely, a single quantum dot has the potential to become a robust, high-flux and narrow linewidth emitter of single photons, properties not shared by any other emitter. The aim here is to develop a single "droplet" quantum dot as an excellent single photon source at the Rb wavelength, 780 nm. A quantum dot single photon will be created, stored in an ultra-cold gas of Rb atoms, and subsequently re-created with a laser pulse, a prototype hybrid quantum memory. The particular challenges centre around the development of the droplet quantum dots and the associated heterostructures. An overriding issue for all these activities is the poor photon extraction efficiency from the high index semiconductor. This will be addressed here by engineering the photon modes, both with waveguides and, notably, with tunable micro-cavities. The tunable micro-cavities are particularly attractive: routes to achieving spin-resolved strong coupling between the quantum dot and vacuum cavity field are presented.
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