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Electro-optics of semiconductor nanostructures

English title Electro-optics of semiconductor nanostructures
Applicant Warburton Richard
Number 132313
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 01.04.2011 - 30.09.2014
Approved amount 782'573.00
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Keywords (9)

semiconductor heterostructure; diamond; spin qubit; laser spectroscopy; spin resonance; quantum dot; photonics; spin; semiconductor

Lay Summary (English)

Lead
Lay summary
A semiconductor quantum dot behaves in many ways as an artificial atom: a single quantum dot is an ideal emitter of single photons. Furthermore, by adding or removing a single electron from the quantum dot, a quantum dot can trap a single spin. This spin can potentially be used as a quantum bit, a qubit, and can be deployed in combination with single photons to generate entangled states. There are potential applications in the areas of quantum information science. However, the coherence of single spins tends to be very limited by the complex semiconductor host. Also, the interaction of a single quantum dot with a light beam is inevitably weak. This project aims to create a platform whereby the interaction with light can be boosted massively using a tunable micro-cavity, and to explore the possibilities of using a single hole in a quantum dot spin as spin qubit. The tunable micro-cavity may have extensive applications, not just involving quantum dots; a coherent single spin in a semiconductor quantum dot would open the way to implementing concepts in quantum communication and quantum information processing using highly versatile semiconductors.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
A small mode volume tunable microcavity: Development and characterization
Greuter Lukas, Starosielec Sebastian, Najer Daniel, Ludwig Arne, Duempelmann Luc, Rohner Dominik, Warburton Richard J. (2014), A small mode volume tunable microcavity: Development and characterization, in APPLIED PHYSICS LETTERS, 105(12), 121105.
High Resolution Coherent Population Trapping on a Single Hole Spin in a Semiconductor Quantum Dot
Houel Julien, Prechtel Jonathan H., Kuhlmann Andreas V., Brunner Daniel, Kuklewicz Christopher E., Gerardot Brian D., Stoltz Nick G., Petroff Pierre M., Warburton Richard J. (2014), High Resolution Coherent Population Trapping on a Single Hole Spin in a Semiconductor Quantum Dot, in PHYSICAL REVIEW LETTERS, 112(10), 107401.
Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses
Munsch Mathieu, Wuest Gunter, Kuhlmann Andreas V., Xue Fei, Ludwig Arne, Reuter Dirk, Wieck Andreas D., Poggio Martino, Warburton Richard J. (2014), Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses, in NATURE NANOTECHNOLOGY, 9(9), 671-675.
Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector
Heath Robert M., Tanner Michael G., Casaburi Alessandro, Webster Mark G., Alvarez Lara San Emeterio, Jiang Weitao, Barber Zoe H., Warburton Richard J., Hadfield Robert H. (2014), Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector, in APPLIED PHYSICS LETTERS, 104(6), 063503.
Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire
Montinaro Michele, Wuest Gunter, Munsch Mathieu, Fontana Yannik, Russo-Averchi Eleonora, Heiss Martin, Morral Anna Fontcuberta I., Warburton Richard J., Poggio Martino (2014), Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire, in NANO LETTERS, 14(8), 4454-4460.
A dark-field microscope for background-free detection of resonance fluorescence from single semiconductor quantum dots operating in a set-and-forget mode
Kuhlmann Andreas V., Houel Julien, Brunner Daniel, Ludwig Arne, Reuter Dirk, Wieck Andreas D., Warburton Richard J. (2013), A dark-field microscope for background-free detection of resonance fluorescence from single semiconductor quantum dots operating in a set-and-forget mode, in REVIEW OF SCIENTIFIC INSTRUMENTS, 84(7), 073905.
Charge noise and spin noise in a semiconductor quantum device
Kuhlmann Andreas V., Houel Julien, Ludwig Arne, Greuter Lukas, Reuter Dirk, Wieck Andreas D., Poggio Martino, Warburton Richard J. (2013), Charge noise and spin noise in a semiconductor quantum device, in NATURE PHYSICS, 9(9), 570-575.
Exciton fine-structure splitting of telecom-wavelength single quantum dots: Statistics and external strain tuning
Sapienza Luca, Malein Ralph N. E., Kuklewicz Christopher E., Kremer Peter E., Srinivasan Kartik, Griffiths Andrew, Clarke Edmund, Gong Ming, Warburton Richard J., Gerardot Brian D. (2013), Exciton fine-structure splitting of telecom-wavelength single quantum dots: Statistics and external strain tuning, in PHYSICAL REVIEW B, 88(15), 155330.
Frequency-Stabilized Source of Single Photons from a Solid-State Qubit
Prechtel Jonathan H., Kuhlmann Andreas V., Houel Julien, Greuter Lukas, Ludwig Arne, Reuter Dirk, Wieck Andreas D., Warburton Richard J. (2013), Frequency-Stabilized Source of Single Photons from a Solid-State Qubit, in PHYSICAL REVIEW X, 3(4), 041006.
Prospects for storage and retrieval of a quantum-dot single photon in an ultracold Rb-87 ensemble
Rakher Matthew T., Warburton Richard J., Treutlein Philipp (2013), Prospects for storage and retrieval of a quantum-dot single photon in an ultracold Rb-87 ensemble, in PHYSICAL REVIEW A, 88(5), 053834.
Self-assembled quantum dots in a nanowire system for quantum photonics
Heiss M., Fontana Y., Gustafsson A., Wuest G., Magen C., O'Regan D. D., Luo J. W., Ketterer B., Conesa-Boj S., Kuhlmann A. V., Houel J., Russo-Averchi E., Morante J. R., Cantoni M., Marzari N., Arbiol J., Zunger A., Warburton R. J., Fontcuberta i Morral A. (2013), Self-assembled quantum dots in a nanowire system for quantum photonics, in NATURE MATERIALS, 12(5), 439-444.
Single spins in self-assembled quantum dots
Warburton RJ (2013), Single spins in self-assembled quantum dots, in Nature Materials, 12, 483-493.
A superconducting nanowire single photon detector on lithium niobate
Tanner MG, San Emeterio Alvarez L, Jiang W, Warburton RJ, Barber ZH, Hadfield RH (2012), A superconducting nanowire single photon detector on lithium niobate, in Nanotechnology, 23, 505201.
Fast electro-optics of a single self-assembled quantum dot in a charge-tunable device
Prechtel JH, Dalgarno PA, Hadfield RH, McFarlane J, Badolato A, Petroff PM, Warburton RJ (2012), Fast electro-optics of a single self-assembled quantum dot in a charge-tunable device, in JOURNAL OF APPLIED PHYSICS, 111(4), 043112-043112.
Laser micro-fabrication of concave, low-roughness features in silica
Hunger D, Deutsch C, Barbour RJ, Warburton RJ, Reichel J (2012), Laser micro-fabrication of concave, low-roughness features in silica, in AIP ADVANCES, 2(1), 012119-012119.
Probing Single-Charge Fluctuations at a GaAs/AlAs Interface Using Laser Spectroscopy on a Nearby InGaAs Quantum Dot
Houel J, Kuhlmann AV, Greuter L, Xue F, Poggio M, Gerardot BD, Dalgarno PA, Badolato A, Petroff PM, Ludwig A, Reuter D, Wieck AD, Warburton RJ (2012), Probing Single-Charge Fluctuations at a GaAs/AlAs Interface Using Laser Spectroscopy on a Nearby InGaAs Quantum Dot, in PHYSICAL REVIEW LETTERS, 108(10), 107401-107401.
A tunable microcavity
Barbour RJ, Dalgarno PA, Curran A, Nowak KM, Baker HJ, Hall DR, Stoltz NG, Petroff PM, Warburton RJ (2011), A tunable microcavity, in JOURNAL OF APPLIED PHYSICS, 110(5), 053107-053107.
Controlling the Interaction of Electron and Nuclear Spins in a Tunnel-Coupled Quantum Dot
Kloeffel C, Dalgarno PA, Urbaszek B, Gerardot BD, Brunner D, Petroff PM, Loss D, Warburton RJ (2011), Controlling the Interaction of Electron and Nuclear Spins in a Tunnel-Coupled Quantum Dot, in PHYSICAL REVIEW LETTERS, 106(4), 046802-046802.
Laser spectroscopy of individual quantum dots charged with a single hole
Gerardot BD, Barbour RJ, Brunner D, Dalgarno PA, Badolato A, Stoltz N, Petroff PM, Houel J, Warburton RJ (2011), Laser spectroscopy of individual quantum dots charged with a single hole, in APPLIED PHYSICS LETTERS, 99(24), 243112-243112.
Robust Quantum Dot Exciton Generation via Adiabatic Passage with Frequency-Swept Optical Pulses
Simon CM, Belhadj T, Chatel B, Amand T, Renucci P, Lemaitre A, Krebs O, Dalgarno PA, Warburton RJ, Marie X, Urbaszek B (2011), Robust Quantum Dot Exciton Generation via Adiabatic Passage with Frequency-Swept Optical Pulses, in PHYSICAL REVIEW LETTERS, 106(16), 166801-166801.

Collaboration

Group / person Country
Types of collaboration
EPF Lausanne Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Ruhr University Bochum Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Institute for Cross-Disciplinary Physics and Complex Systems Spain (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Laboratoire Kastler Brossel France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
INSA, Toulouse France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
University of California Santa Barbara United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
University of Glasgow Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Heriot-Watt University, Edinburgh Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Advanced Workshop on Landau-Zener Interferometry and Quantum Control in Condensed Matter Talk given at a conference Manipulating the nuclear spins in a semiconductor quantum dot with frequency-swept magnetic resonance pulses 29.09.2014 Izmir, Turkey Warburton Richard;
Spin-based quantum information processing Talk given at a conference Electron, hole and nuclear spins in an InGaAs quantum dot 18.08.2014 Konstanz, Germany Warburton Richard;
International Conference on the Physics of Semiconductors Talk given at a conference Spin noise in a self-assembled quantum dot 10.08.2014 Austin, United States of America Kuhlmann Andreas;
International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN) Talk given at a conference Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses 09.06.2014 Montpellier, France Wüst Gunter Johannes;
"Jaszowiec" International School and Conference on the Physics of Semiconductors 2014 Talk given at a conference Single spins in self-assembled quantum dots 07.06.2014 Wisla, Poland Kuhlmann Andreas;
International Conference on Quantum Dots Talk given at a conference Charge noise and spin noise in a semiconductor quantum device 11.05.2014 Pisa, Italy Kuhlmann Andreas;
International Conference on Quantum Dots Talk given at a conference Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses 11.05.2014 Pisa, Italy Wüst Gunter Johannes;
International Conference on Quantum Dots Talk given at a conference Quantum dot opto-mechanics in a fully self-assembled nanowire 11.05.2014 Pisa, Italy Wüst Gunter Johannes;
DPG Frühjahrstagung Talk given at a conference Charge noise and spin noise in a semiconductor quantum device 30.03.2014 Dresden, Germany Kuhlmann Andreas;
APS March Meeting Talk given at a conference Charge noise and spin noise from a single quantum dot 03.03.2014 Denver, United States of America Warburton Richard;
Winterschool on New Developments in Solid State Physics Talk given at a conference Quantum Dot Optics 23.02.2014 Mauterndorf, Austria Warburton Richard;
Spintech 7 Poster Coherent manipulation of the nuclear spin ensemble in a single InGaAs quantum dot with chirped RF pulses 29.07.2013 Chicago, United States of America Wüst Gunter Johannes;
APS March Meeting Talk given at a conference Charge noise and spin noise in a semiconductor qubit 03.03.2013 Baltimore, USA, United States of America Warburton Richard;
S3NANO Winter School Talk given at a conference Charge noise and spin noise in a semiconductor quantum device 04.02.2013 Windsor, UK, Great Britain and Northern Ireland Warburton Richard;
International Conference on Physics and Applications of Spin-related Phenomena in Semiconductors Talk given at a conference Spins in a self-assembled quantum dot 05.08.2012 Eindhoven, Holland, Netherlands Warburton Richard;
International Conference on the Physics of Semiconductors Talk given at a conference Charge noise and spin noise in a self-assembled quantum dot 29.07.2012 Zurich, Switzerland, Switzerland Kuhlmann Andreas;
NCCR QSIT General Meeting Poster Bright source of red single photons from a semiconductor nanowire 01.02.2012 Arosa, Switzerland Wüst Gunter Johannes;
International Workshop on Solid-State Quantum Computing Talk given at a conference Spins in a self-assembled quantum dot 12.12.2011 Hong Kong, Hongkong Warburton Richard;
Workshop on Quantum Spintronics Talk given at a conference Probing charge noise in the environment of a quantum dot 02.10.2011 Italy, Italy Warburton Richard; Kuhlmann Andreas;
Spintech Talk given at a conference Spins in a self-assembled quantum dot 01.08.2011 Japan, Japan Warburton Richard;
International Symposium on Compound Semiconductors Talk given at a conference Coherent single hole spins in quantum dots 22.05.2011 Berlin, Germany Warburton Richard;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Quanten Licht (Senioren-Uni Buchs) German-speaking Switzerland 2014
Media relations: radio, television Das Quantengenie TV German-speaking Switzerland 2012
Talks/events/exhibitions Quanten-Licht (Senioren-Uni Basel) German-speaking Switzerland 2012
Talks/events/exhibitions Saturday morning physics German-speaking Switzerland 2012
Talks/events/exhibitions Cafe Scientifique, Basel German-speaking Switzerland 2011

Awards

Title Year
Fellowship of the Institute of Physics 2012

Associated projects

Number Title Start Funding scheme
157770 Basel Shared Frequency Comb Facility 01.12.2014 R'EQUIP
144979 Mode-locked laser for fast quantum state manipulation 01.01.2013 R'EQUIP
156637 Electro-optics of semiconductor nanostructures 01.10.2014 Project funding (Div. I-III)
175748 Electro-optics of semiconductor nanostructures 01.10.2017 Project funding (Div. I-III)

Abstract

Semiconductor heterostructures have uniquely attractive properties for both electronics and opto-electronics applications. Semiconductors underpin information processing: electronic signals are manipulated at GHz frequencies with semiconductor devices and signals are transmitted over large distances via optical fibres using semiconductor lasers and detectors. It is however presently unclear if these material advantages can be exploited in the creation of a new type of device manipulating coherent quantum states. Radical proposals exist in the areas of communication, metrology, imaging and information processing. The stumbling block to the successful application of these ideas in a semiconductor is the rapid loss of coherence via dephasing. A single, localized spin is potentially coherent even in a semiconductor as the spin interacts only indirectly with the main source of dephasing, the phonons. Given the rather short coherence times in semiconductors, optical methods of spin manipulation are very attractive, and the optical interaction can be amplified and exploited in rich and varied ways with a miniaturized optical cavity, a microcavity. This project aims to create a coherent single quantum state based on a single hole spin, and its integration into a fully-tunable microcavity.Coherent quantum dot spin (project A) A semiconductor heavy hole spin is constructed from a p-like Bloch state which conveniently goes to zero at the location of the nucleus, eliminating the contact part of the hyperfine interaction. The dipole part of the interaction still remains but has an Ising-like form. The theoretical prediction is that a highly localized single hole spin can be coherent: on the one hand, quantization suppresses the dephasing via the phonons; on the other hand, an in-plane magnetic field suppresses the dephasing via the fluctuating nuclear spins. Experimentally however, very little is known about the hole spin coherence. A programme of experiments will be launched, exploring the single hole spin coherence with a quantum interference effect - coherent population trapping (CPT) and stimulated Raman adiabatic passage (STIRAP) - and with spin resonance. A coherent hole spin will be engineered by tailoring both the quantum dots and the external parameters.A fully tunable microcavity (project B) Existing micro-cavities do not allow in situ spatial tuning of the nanostructure to the cavity anti-node, have limited in situ spectral tuning, and are difficult to integrate with electronics. A generic microcavity platform, a miniaturized Fabry-Perot cavity, will be developed offering complete spatial and spectral tuning, high Q-factor, low volume and compatibility with a range of nanostructures (quantum dots, semiconductor nanostructures, colour centres in diamond). The applicant, Prof. Dr. Richard J. Warburton (RJW), has recently been elected Ordinarius Professor of Condensed Matter Physics in the Physics Department at the University of Basel. RJW moves to Basel from Heriot-Watt University, Edinburgh, UK where he founded the Nano-Optics Group in 2000, becoming full Professor in 2005. RJW's expertise is in the optics of semiconductors covering a wide range of frequencies, material systems and applications. RJW's Nano-optics group in Edinburgh has focused primarily on the physics of quantum dots yielding high profile publications: 4 Nature, 1 Science, 1 Nature Physics, 1 Nature Photonics and 8 Physical Review Letters. RJW has been invited to over 30 international conferences in the past 7 years including the major semiconductor conferences (ICPS 2002, QD 2004, QD 2008, MSS 2009), the major US meetings (APS March Meeting 2000, 2005 and 2009; MRS Fall Meeting 2002, 2007 and 2009; Photonics West 2008) and also meetings on quantum information (eg keynote speaker at Quantum Information Science and Quantum Decoherence, Leiden 2008). RJW will give a plenary lecture at ICPS 2010 and a keynote talk at QD 2010. RJW's work in the UK has been funded by EPSRC, grants totaling £4.3M all awarded in a very competitive environment. RJW was elected to a Fellowship of the Royal Society of Edinburgh in 2009. RJW studied originally in Oxford (MA and DPhil degrees), and worked at the Center for NanoScience at Ludwig-Maximilians-University, Munich, as von Humboldt Fellow (1993-94), Marie-Curie Fellow (1994-96) and Assistant Professor (1996-99).
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