Welcome to the web page of the Quantum Electronic Devices group in UNSW's School of Physics
The Quantum Electronic Devices group (@QEDUNSW) is part of the Condensed Matter department in UNSW's School of Physics in the heart of Sydney. We are a key laboratory in the Australian Research Council Centre of Excellence for Future Low Energy Electronics Technologies.
Our research examines the fundamental properties of low dimensional systems realised in advanced semiconductor devices, and the development of new semiconductor and superconducting devices.
- 23 Jul 2020
- Congratulations to Daisy Wang on her paper in Applied Physics Letters reporting a new approach to making lateral surface superlattices for artificial crystals in conventional electronic transistors: DQ Wang, D Reuter, AD Wieck, AR Hamilton, and O Klochan: "Two-dimensional lateral surface superlattices in GaAs heterostructures with independent control of carrier density and modulation potential", Applied Physics Letters 117 (3), 032102 (2020). https://doi.org/10.1063/5.0009462
- 15 Jul 2020
- Applications now open for the 2020 Sydney Quantum Academy Postdoctoral Fellowships. Closing date: Tuesday 11 August 2020. The QED team offers projects in topological systems and quantum computing.To apply, click here. Contact email@example.com and cc: firstname.lastname@example.org for further information.
- 13 May 2020
- Sydney Quantum Academy Postgraduate PhD Scholarships The QED team currently offers PhD projects in topological systems and quantum computing. For more information and to apply, click here. Contact email@example.com and CC: firstname.lastname@example.org for further information.
- 29 Feb 2020
- Another Rapid Communication in Physical Review B: With David Neilson and our collaborators in Europe we have a new paper on excitonic superfluidity in semiconductor devices: "Experimental conditions for observation of electron-hole superfluidity in GaAs heterostructures", Samira Saberi-Pouya, Sara Conti, Andrea Perali, Andrew F. Croxall, Alexander R. Hamilton, Francois M. Peeters, David Neilson. A preprint is here: https://arxiv.org/abs/1910.06631
- 24 Feb 2020
- Congratulations to Dr. Liles upon the award of his Ph.D. thesis “Single hole spins in silicon quantum dots”.
- 21 Feb 2020
- First paper of the year: Congratulations to Elizabeth Marcellina, whose paper reporting a new signature of topological physics in classical physics properties has just been been accepted for publication as a Rapid Communication in Physical Review B: "Signatures of quantum mechanical Zeeman effect in classical transport due to topological properties of two-dimensional spin-3/2 holes", E. Marcellina, Pankaj Bhalla, A. R. Hamilton, Dimitrie Culcer. The preprint is here: https://arxiv.org/abs/1906.11439
- 11 Feb 2020
- Scott Liles is at ICONN 2020 presenting a talk on Strong electric control of a single hole g-factor
- 22 Jan 2020
- We're excited to be installing our new dilution fridge, and have already made some cutting edge breakthroughs in an effort to deepen the understanding of holes. Link.
- 20 Dec 2019
- Congratulations to Dr. Karina Hudson, who has just been awarded a Dean’s Award for her Outstanding PhD Thesis.
- 11 Dec 2019
- Well done again to Matthew Rendell, who won a best poster award at the FLEET annual workshop.
- 4 Dec 2019
- New funding for QED research. Alex Hamilton, with collaborators Daniel Loss in Basel, Giordano Scappucci in TU Delft, and David Ritchie in Cambridge, have won an ARC Discovery Grant to investigate hole spins for quantum information applications.
- 27 Nov 2019
- Congratulations to Matthew Rendell! His poster won the popular vote during the combined Gordon Godfrey Workshop / Physics in Sydney Research Showcase poster session.
- 25 Nov 2019
- Welcome to Prof. Ding Zhang, visiting from Tsinghua university.
- 17 Nov 2019
- Menghan Liao from Tsinghua University is visiting to conduct experiments with Dr Feixiang Xiang, using a low-temperature measurement system with 15 Tesla superconducting magnet and 2 axis rotator.
- 22 Nov 2019
- Welcome to Prof. David Neilson, visiting the QED group from the University of Antwerp for the next 3 months.
- 5 Nov 2019
- Two new papers on electron-hole superfluidity posted on the arXiv preprint server.
i) In "Experimental conditions for observation of electron-hole superfluidity in GaAs heterostructures", S. Saberi-Pouya, S. Conti, A. Perali, A.F. Croxall, A.R. Hamilton, F.M. Peeters, and D. Neilson review the consitions necessary to observe superfluidity in GaAs devices, explaining why it is easier to do this with optical than electrical measurements, and suggest new electrical measurements to detect the exciton condensation. https://arxiv.org/abs/1910.06631
ii) In "Three-dimensional electron-hole superfluidity in a superlattice close to room temperature", M. Van der Donck, S. Conti, A. Perali, A. R. Hamilton, B. Partoens, F. M. Peeters, and D. Neilson show how to overcome the Mermin-Wagner limitation that hinders two-dimensional superfluids, predicting superfluid transition temperatures that can conveniently be accessed with a domestic refrigerator. https://arxiv.org/abs/1911.01123
- 14-16 Oct 2019
- Ik Kyeong and Alex are at the 2019 Silicon Quantum Electronics in San Sebastian, Spain.
- 19 Sept 2019
- Welcome to Lucas Glover, Seamus Lilley and Krittika Kumar, who are undertaking "Taste of Research" projects in the QED laboratories this term. 9 Sept 2019 Congratulations to Scott Liles on submitting his PhD thesis. Construction of our new laboratory has begun!
- 19 Aug 2019
- Matt Rendell is visiting our collaborators at TUDelft in the Netherlands thanks to a CSIRO Travel Scholarship.
- 10 July 2019
- Congratulations to Feixiang Xiang and Pankaj Sharma, whose paper reporting the first observation of a native ferroelectric metal has just appeared in Science Advances (A room-temperature ferroelectric semimetal, http://dx.doi.org/10.1126/sciadv.aax5080).
- 11 June 2019
- Generously funded Scientia PhD Scholarships are available to study topological electronics in atomically thin materials. The scholarship is fully funded for 4 years (including all university tuition fees, AUS$40k (US$30k) annually for living expenses, and an additional research/travel budget), and is open to applicants from any nationality.
The research project will involve the fabrication and study of 2D topological materials. In 2010, the Nobel prize in physics was awarded for groundbreaking experiments on the atomically thin two-dimensional material graphene, which Geim and Novoselov showed could be made with sticky tape! Later, in 2016 the prize was awarded for the theoretical discoveries of topological phase transitions and topological phases of matter. These two fields have recently come together, opening a new avenue for the study of topological electronics in atomically thin materials, with potential applications in future low-energy electronics and topologically protected quantum computers
This experimental research project will fabricate and study 2D topological materials such as monolayer WTe2, a topological 2D material that can be exfoliated to form atomically thin devices that exhibit semiconducting, superconducting, topological insulating, and ferroelectric states. The successful applicants will work in the national ARC Centre of Excellence FLEET and learn fabrication of electronic devices using state-of-the-art systems both in the FLEET labs and ANFF-UNSW cleanrooms. The successful applicants will also use advanced low-temperature and high magnetic field measurement systems in QED labs to perform quantum transport measurement and examine the transport properties.
Applicants should have a good academic record (2:1 or 1st class). The Scientia program is for future leaders, so applicants who can demonstrate their excellence and enthusiasm in science or leadership through activities such as research internships, scientific publications, teaching activities, competitive sports, industrial experience, leadership in sports or social clubs, voluntary work, etc., are strongly encouraged. Women and minorities are strongly supported by FLEET and encouraged to apply.
- 23 May 2019
- Dr. Semonti Bhattacharyya from Monash University is visiting us for two days.
- 13-17 May 2019
- Feixiang and Alex are visiting collaborators at NUS in Singapore, before going to Beijing to present work at a special symposium on topological materials and spin-orbit coupling at Tsinghua University.
- 8 March 2019
- Karina, Yonatan, Matt and Alex are giving talks at the 2019 APS March meeting of the American Physical Society in Boston.
- 15 Feb 2019
- Congratulations to Matthew Rendell, 2019 CSIRO Alumni Scholarship winner. He will use the scholarship award to visit the QUTech group at TU Delft in the Netherlands
29 Jan 2019 Golrokh Akhgar's paper studying the g-factor of holes in surface conducting diamond is now published in Physical Review B - well done Gol! g-factor and well-width fluctuations as a function of carrier density in the two-dimensional hole accumulation layer of transfer-doped diamond, G. Akhgar, D.L Creedon, A. Stacey, D.I. Hoxley, J.C. McCallum, A.R Hamilton, and C.I. Pakes, Physical Review B 99, 035159 (2019). https://doi.org/10.1103/PhysRevB.99.035159