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Spin, Quantum Electronics, and Nanomechanics

English title Spin, Quantum Electronics, and Nanomechanics
Applicant Poggio Martino
Number 140478
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 01.04.2012 - 31.03.2015
Approved amount 496'864.00
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Keywords (7)

micro- and nanomechanics; nuclear magnetic resonance; magnetic resonance imaging (MRI); mesoscopic physics; experimental condensed matter physics; magnetic resonance force microscopy; ultra-sensitive force microscopy

Lay Summary (English)

Lead
Lay summary

The study and development of micro- and nanomechanical resonators has become a vibrant field of physics, attracting intense interest among researchers and lay-people alike. Measurement techniques with unprecedented sensitivity, including torque magnetometry and force-detected magnetic resonance, have emerged as important applications of nanomechanical devices. High quality lithographically-defined nanomechanical oscillators are now being joined by a new class of self-assembled resonators such as nanowires and nanotubes. At the same time, we are perfecting our ability to study and control the quantum behavior of small mechanical structures. Researchers have recently developed techniques to initialize a mechanical oscillator in its ground state and even to prepare it in a variety of coherent states.

This proposal consists of two projects in this vein: the coupling of mechanical modes to mesoscopic transport and nanoscale magnetic resonance force microscopy. The first project represents an active and growing area of research whose pursuit has produced a series of interesting results. From a practical perspective, the study of such systems such systems provides an avenue for designing sensitive detectors of mechanical displacement -- detectors which may approach the ultimate quantum limit.  The second project combines the physics of magnetic resonance imaging (MRI) with the
methods of scanning probe microscopy in a technique known as magnetic resonance force microscopy (MRFM). Nuclear MRI detected by MRFM has demonstrated a 3D spatial resolution better than 10 nm in organic samples. We have started applying this technique to semiconductor systems -- in particular, semiconductor systems which contain too few nuclei to be measured by conventional means.

Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Boundary between the thermal and statistical polarization regimes in a nuclear spin ensemble
Herzog Benedikt, Cadeddu Davide, Xue Fei, Peddibhotla Phani, Poggio Martino (2014), Boundary between the thermal and statistical polarization regimes in a nuclear spin ensemble, in Applied Physics Letters, 105(4), 043112.
Quantum dot opto-mechanics in a fully self-assembled nanowire
Montinaro Michele, Wüst Gunter, Munsch Mathieu, Fontana Yannik, Russo-Averchi Eleonora, Heiss Martin, Fontcuberta i Morral Anna, Warburton Richard, Poggio Martino (2014), Quantum dot opto-mechanics in a fully self-assembled nanowire, in Nano Letters, 14, 4454.
Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire
Peddibhotla Phani, Xue Fei, Hauge H.I.T., Assali Simone, Bakkers Erik, Poggio Martino (2013), Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire, in Nature Physics, 9, 631.
Nanoscale multifunctional sensor formed by a Ni nanotube and a scanning Nb nanoSQUID
Nagel Joachim, Buchter Arne, Xue Fei, Kieler Oliver, Weimann T., Kohlmann J., Zorin A., Rüffer Daniel, Russo-Averchi Eleonora, Huber R., Berberich P., Fontcuberta i Morral Anna, Grundler Dirk, Kleiner Reinhold, Koelle Dieter, Poggio Martino, Kemmler Matthias (2013), Nanoscale multifunctional sensor formed by a Ni nanotube and a scanning Nb nanoSQUID, in Physical Review B, 88, 064425.
Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry
Buchter Arne, Nagel Joachim, Rüffer Daniel, Xue Fei, Weber Dennis, Kieler Oliver, Weimann T., Kohlmann J., Zorin A., Russo-Averchi Eleonora, Huber R., Berberich P., Fontcuberta i Morral Anna, Kemmler M., Kleiner Reinhold, Koelle Dieter, Grundler Dirk, Poggio Martino (2013), Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry, in Physical Review Letters, 111, 067202.
Cantilever magnetometry of individual Ni nanotubes
Weber Dennis, Rüffer Daniel, Buchter Arne, Xue Fei, Russo-Averchi Eleonora, Huber R., Berberich P., Arbiol J., Fontcuberta i Morral Anna, Grundler Dirk, Poggio Martino (2012), Cantilever magnetometry of individual Ni nanotubes, in Nano Letters, 12, 6139.
Feedback cooling of cantilever motion using a quantum point contact transducer
Montinaro Michele, Mehlin Andrea, Solanki Hari, Peddibhotla Phani, Mack Shawn, Awschalom David, Poggio Martino (2012), Feedback cooling of cantilever motion using a quantum point contact transducer, in Applied Physics Letters, 101, 133104.

Collaboration

Group / person Country
Types of collaboration
Prof. David Awschalom / UCSB United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Dieter Koelle / Universität Tübingen, Germany Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Prof. Richard Warburton / Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Prof. Pietro Carretta / University of Pavia, Italy Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
Prof. Klaus Ensslin / ETH Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Erik Bakkers / TU Eindhoven, Netherlands Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Anna Fontcuberta i Morral / EPFL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Christian Degen / ETH Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Quantum Technologies Based on Hybrid Emitter/Solid-state Systems Talk given at a conference Cantilever magnetometry of individual ferromagnetic nanotubes 21.09.2014 Stasbourg, France Poggio Martino;
School on nano-optomechanics Talk given at a conference Couping nanomechanics to solid-state spin 21.09.2014 Stasbourg, France Poggio Martino;
Condensed Matter in Paris 2014 (JMC 14, CMD 25) Talk given at a conference Quantum dot opto-mechanics in anl-2014-01413t_0007 fully self-assembled nanowire, 24.08.2014 Paris, France Montinaro Michele;
32nd International Conference on the Physics of Semiconductors (ICPS) Talk given at a conference Quantum dot opto-mechanics in anl-2014-01413t_0007 fully self-assembled nanowire, 10.08.2014 Austom, United States of America Montinaro Michele;
International Seminar of Nanomechanical Systems (NEMS 2014) Talk given at a conference Cantilever magnetometry of individual ferromagnetic nanotubes 30.06.2014 Paris, France Poggio Martino;
Skymag 2014 Talk given at a conference Stabilized skyrmion phase in MnSi nanowires detected by dynamic cantilever magnetometry 09.04.2014 Paris, France Mehlin Andrea;
55th Experimental Nuclear Magnetic Resonance Conference (ENC) Talk given at a conference Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire 23.03.2014 Boston, United States of America Poggio Martino;
5th International Workshop on Advanced Scanning Probe Microscopy Techniques Talk given at a conference A hybrid nanoscale magnetometer 24.02.2014 Karlsruhe, Germany Buchter Arne;
544th Wilhelm und Else Heraeus-Seminar: Interactions with the Nanoworld: Local Probes with High Time, Energy and Force Resolution Talk given at a conference Nano-mechanics, nano-magnetometry, and nano-MRI 11.11.2013 Bad Honnef, Germany Poggio Martino;
7th International School and Conference on Spintronics and Quantum Information Technology Talk given at a conference Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire 29.07.2013 Chicago, United States of America Poggio Martino;
Quantum Nano- and Micromechanics, Talk given at a conference Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire 21.07.2013 Monte Verità, Switzerland Poggio Martino;
3rd Workshop on Nanoscale Spin and Charge Dynamics Talk given at a conference Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire 08.07.2013 Cluj, Romania Poggio Martino;
Swiss NanoConvention 2013 Poster Feedback Cooling of Cantilever Motion using a Quantum Point Contact Transducer 23.05.2013 Basel, Switzerland Montinaro Michele;
International Workshop on Magnetic Nanowires and Nanotubes 2013 Talk given at a conference Nano-mechanics, nano-magnetometry, and nano-MRI 12.05.2013 Kaub, Germany Poggio Martino;
International Workshop on Magnetic Nanowires and Nanotubes 2013 Poster A hybrid nanoscale magnetometer 12.05.2013 Kaub, Germany Buchter Arne;
526. Wilhelm und Else Heraeus-Seminar Functional Magnetic Nanomembranes Poster A hybrid nanoscale magnetometer 04.03.2013 Bad Honnef, Germany Buchter Arne;
Advanced Magnetic Resonance for the Study of Dynamics in Biomolecules and Materials Talk given at a conference Recent progress in force-detected MRI 17.09.2012 Halle, Germany Poggio Martino;
Annual meeting of the Swiss Physical Society (SPS) Talk given at a conference Detection of Cantilever Thermal Motion and Feedback Cooling using a Quantum Point Contact 21.06.2012 Zürich, Switzerland Montinaro Michele;
Annual meeting of the Swiss Physical Society (SPS) Poster Harnessing nuclear spin polarization fluctuations in a semiconductor nanowire 21.06.2012 Zürich, Switzerland Peddibhotla Phani Kumar;


Self-organised

Title Date Place
3rd Optical & Magnetic Nanostructures Workshop 29.01.2015 Basel, Switzerland
NANO-MAGNETISM WORKSHOP 30.09.2012 Basel, Switzerland

Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Magnetresonanztomographie auf den Nanometer genau German-speaking Switzerland 2013

Awards

Title Year
European Research Council (ERC) Starting Grant: A competitive grant providing up to 1.5M € over 5 years for promising young principle investigators based in Europe with an excellent research proposal. 287 of 3329 proposals were approved in 2013. 2013

Associated projects

Number Title Start Funding scheme
159893 Nanometer-scale Magnetometry 01.04.2015 Project funding (Div. I-III)
171003 Discovery and Nanoengineering of Novel Skyrmion-hosting Materials 01.10.2017 Sinergia
124394 Spin, Quantum Electronics, and Nanomechanics 01.04.2009 Project funding (Div. I-III)
124394 Spin, Quantum Electronics, and Nanomechanics 01.04.2009 Project funding (Div. I-III)

Abstract

The study and development of micro- and nanomechanical resonators has become a vibrant field of physics attracting intense interest among researchers and lay-people alike. Measurement techniques with unprecedented sensitivity, including torque magnetometry and force-detected magnetic resonance, have emerged as important applications of nanomechanical devices. High quality lithographically-defined nanomechanical oscillators are now being joined by a new class of self-assembled resonators such as nanowires and nanotubes. At the same time, we are perfecting our ability to study and control the quantum behavior of small mechanical structures. Researchers have recently developed techniques to initialize a mechanical oscillator in its ground state and even to prepare it in a variety of coherent states. This proposal consists of two projects in this vein: the coupling of mechanical modes to mesoscopic transport and nanoscale magnetic resonance force microscopy. The coupling of mechanical modes to mesoscopic transport (project A) represents an active and growing area of research whose pursuit has produced a series of interesting results. Various groups have observed nanomechanical effects in mesoscopic transport devices, most notably in suspended nanotube and nanowire (NW) transistors. Coupling of nanomechanical resonators to controllable quantum systems such as quantum dots (QDs) and superconducting qubits is in its early stages. These developments, combined with the recently demonstrated ability to initialize nanomechanical oscillators in their ground state, mean that researchers can begin to couple a quantum nanomechanical harmonic oscillator to a quantum two-level system. Such an experimental system is a veritable playground for experiments on quantum coherence and measurement theory. We intend to carry out several experiments in this direction including the continuation of attempts to couple quantum point contacts, QDs, and eventually an electronic Mach-Zehnder interferometer to a mechanical oscillator. We also plan to study nanomechanical couplings in suspended NW transistors. From a practical perspective, such systems provide an avenue for designing sensitive detectors of mechanical displacement | detectors which approach the quantum limit. Nanoscale magnetic resonance force microscopy (MRFM) (project B) and its application to semiconductor nanostructures combine the physics of magnetic resonance imaging (MRI) with the techniques of scanning probe microscopy. In the past few years, MRFM has made impressive strides forward in sensitivity and resolution. Nuclear MRI detected by MRFM has demonstrated a 3D spatial resolution better than 10 nm in organic samples. We have started and intend to continue applying this technique to semiconductor systems | in particular, semiconductor systems which contain too few nuclei to be measured by conventional means. Nanometer-scale structures such as QDs and NWs are interesting candidates, especially since the nuclear polarization dynamics within these structures are tightly coupled to the electron spin dynamics. In fact, the leading cause of decoherence for electron spin qubits in III-V QDs is the hyperne coupling to the lattice nuclear spins. Another particularly interesting prospect is the potential for sub-surface, isotopically selective imaging on the nanometer-scale in semiconductor materials. Conventional methods such as scanning electron microscopy and transmission electron microscopy notably lack such isotopic contrast. The main applicant, Prof. Martino Poggio, has been a tenure-track assistant professor in the Physics Department at the University of Basel since January 2009. He has built a state-of-the-art laboratory for research in nanomechanics, magnetic resonance, and mesoscopic transport. His group consists of 2 post-doctoral researchers, 4 Ph.D. students (2 supported by the SNF), and 3 Master students. He has collaborations around the world including with Prof. David Awschalom (UCSB), Prof. Connie Chang-Hasnain (UC Berkeley), Prof. Alex Holleitner (TU Munich), and Prof. Roberto Myers (Ohio State). Within Switzerland he is part of the NCCR Nanoscale and the NCCR Quantum Science and Technology and has active collaborations with Prof. Klaus Ensslin (ETH) and Prof. Anna Fontcuberta i Morral (EPFL). He collaborates with various colleagues in Basel, especially Prof. Richard Warburton.
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