Quantum Electronic Devices

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 alex.hamilton@unsw.edu.au and cc: c.bloise@unsw.edu.au 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. quantum_advert.png For more information and to apply, click here. Contact alex.hamilton@unsw.edu.au and CC: c.bloise@unsw.edu.au 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

Topic revision: r115 - 26 Jul 2020, AlexHamilton