Quantum Physics At The University Of Sydney

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sydney.edu.auQuantum Physics atThe University of Sydney1

WHAT IS QUANTUM INFORMATION SCIENCE?Quantum science is the study of quantum mechanics and how to translateknowledge about quantum systems into powerful new technologies. At theUniversity of Sydney we have research programs that delve into both theunderstanding and application of quantum mechanics. We undertaketheoretical and experimental research, which allows our researchers toengineer and manipulate complex quantum systems and create innovativehardware and software solutions. We tackle big questions. How does complexbehaviour emerge from simple quantum systems? Can we control quantumsystems to make a quantum computer? How do you correct errors in complexquantum calculations? What happens if we connect quantum systems“Quantum mechanics is anutterly incredible and bizarrearea of physics; I cannot believesydney.edu.autogether in a quantum internet?What question are you interested in?that I’m able to witness andexploit these remarkablephenomena everyday in our labBen MacintoshSebastian Pauka2019 / Bachelor of Science2019 / PhD, U Sydneyusing individual trapped ions.”(Honours), U SydneyClaire EdmundsPhD student (4th Year)3“In quantum mechanics, knowing“Researching quantum at theeverything about a system stillUniversity of Sydney has givenleaves probability in the outcomesme the opportunity to meetof measurement. We get to thinkinternational researchers around theabout how fundamentalworld and work on some ofuncertainties like this may bethe most dynamic and excitinguseful for computation.”problems in science today.”

OUR RESEARCHThe Quantum Control Laboratory (QCL) explores new ways to controlThe Quantum Integration Laboratory (QIL) probes the quantumquantum systems for use in quantum computing, simulation and sensing.interactions between light, electronics, and atoms embedded in crystals.The group works with arrays of trapped ions, which are confined inUnderstanding and engineering these interactions at the atomic scaleultra-high vacuum chambers and manipulated with laser and microwavepromotes new technologies for connecting quantum systems throughradiation. Experiments are carried out in three quantum computer andoptical networks: a quantum internet.quantum simulator prototypes hosted in two specialised, high-stabilityDr John Bartholomewlaboratories at the Sydney Nanoscience Hub.John Bartholomew is the director of the QIL andProf Michael J. Biercukwants to use optically addressable spin technologiesMike Biercuk is QCL’s director and founder &to transform lab-scale experiments to global-scaleCEO of start-up Q-CTRL. His interests range fromquantum science.experimental quantum computation and simulationmichael.biercuk@sydney.edu.auDr Cornelius ith trapped ions to quantum control engineering.The Quantum Nanoscience Laboratory (QNL) bridges the gap betweenfundamental quantum physics and the engineering approaches needed toscale quantum devices into quantum machines. The team focuses on theCornelius Hempel leads the experiments with ytter-quantum-classical interface and the scale-up of quantum technology. Thebium ions in Paul traps and specialises in quantumQNL also applies quantum technology in biomedicine by pioneering newcomputing and quantum simulation, in particular ofapproaches to magnetic resonance imaging using nanodiamonds.chemistry.Prof David J. Reillycornelius.hempel@sydney.edu.auDavid J. Reilly is QNL’s director and holds a jointposition with Microsoft Corporation and theUniversity of Sydney, as the Principal ResearcherDr Robert Wolfand Director of Microsoft Station Q, Sydney.Robert Wolf has a background in precision spectrosco-david.reilly@sydney.edu.aupy and leads the experimental efforts in quantumsimulation using beryllium ions in a Penning trap.robert.wolf@sydney.edu.au5

The Quantum Theory Group explores a wide range of fundamental andapplied questions ranging from the foundations of quantum mechanicsto how to build practical quantum technology. What exotic properties ofquantum mechanics give quantum computers their power? How do wescaleup ‘quantum weirdness’ from the size of an atom to the size of amainframe? Can we debug quantum hardware and software, and reducequantum errors through coding and fault tolerance?Prof Stephen BartlettStephen Bartlett is exploring the foundations ofquantum mechanics, and then applies these ideas tothe study of quantum computers. He also enjoysworking with experimental teams to design betterquantum technologies.Dr Arne GrimsmoDr Arne Grimsmo is interested in the theory of solidstate quantum devices, designing quantum that can be used for information processing, andfiguring out ways to manipulate quantuminformation in a noisy environment.arne.grimsmo@sydney.edu.auDr Isaac KimIsaac Kim has a broad interest in quantum informationand quantum computing, ranging from topologicalordered systems and holography to quantum errorcorrection and quantum algorithms. He is especiallyinterested in developing noise-robust quantumalgorithms that can speed up material simulationusing realistic nearterm quantum computers.isaac.kim@sydney.edu.au7

HOW CAN I GET INVOLVED IN QUANTUMRESEARCH AT USYD?There are many opportunities during your time at the University of Sydney tojoin the research teams that are driving discovery and innovation in quantumscience. Everyone within a Physics Major can choose to complete a quantumresearch project in their 4th year. If you are a Dalyell Scholar or in the SpecialStudies Program you also have opportunities earlier in your degree. ContactFirst Year Physicsfeatures a group research projectSecond Year PhysicsPHYS2921 Physics 2A (SSP)PHYS2922 Physics 2B (SSP)PHYS2923 (SSP)that can be performed withYou will work on an individualPHYS1904 Physics 1B (SSP)The lab component of this unitresearchers from quantum science.SCDL3991 Science DalyellIndividual Research Projectresearch project, mentored bysydney.edu.authe Unit of Study coordinator to find out more about project requirements.one or more of the quantum sciencein the laboratory, and the timeexperience of cutting-edge research.the project you will give aWorking in a quantum research grouppresentation and write a reportyou will contribute to answering aon your research.field, studying it within the Sydneyenjoyable experiences.”commitment is 3 hours per weekacross the semester. At the end ofan incredibly exciting and beautifulgroup has been one of my mostresearch staff. This replaces workIn this unit you will get a first-hand“Quantum information science isnovel research question. This couldinvolve answering open theoreticalquestions or performing newquantum experiments. At the endyou will present your results in ascientific seminar and report. Thisunit can be done in any year.9Sam Roberts2019 / Phd, U SydneyCurrent role: Working in quantum computing startupPsiQuantum, Palo Alto

Science Summer Research ProgramThere is also the opportunity to get research experience over the summerbreak with a summer vacation scholarship aimed at high performing studentsin the second and third year. You will work for 6 weeks (full time) with one ofour research groups over the December to February break. This is a great wayto get a taste of what it’s like to work in a research group.Third Year PhysicsPHYS3888 Physics Interdisciplinary ProjectIn this project you will work in groups to tackle an interdisciplinary problem.For example, you could use machine learning to help understand the weirdbehaviour of quantum systems, or apply quantum control principles toinvestigate chemical reactions. This consists of 4 hours per week project work“The Quantum NanoscienceLaboratory forged my passion forexperimental quantum physics,sydney.edu.auand at the end you will give a presentation and report describing your results.HonoursPhysics honours is your chance to tackle a substantial year-long researchproject in quantum science. This can be a first step towards a researchcareer, or excellent training in the problem-solving, information handling andprogramming skills that are highly sought-after in industry. Honours researchtackles unsolved problems, and many students end up publishing scientificfostered my growth as a researcherpapers based on their honours thesis work. To enter honours you usually needa credit (65) average across Senior Physics, as well as a SciWAM of at least 65and prepared me well for the nextor above. However you should contact the honours coordinator to discussalternative paths.stage of my career.”PhDDoing a PhD will allow you to do a true deep-dive into quantum science,and become a world-leading expert on your chosen topic. PhDs in Physicstypically take 3.5-4 years, and can be funded by a scholarship such as theAustralian government Research Training Program (RTP) scholarship. TheXanthe Croot2017 / PhD, U SydneyCurrent role: Associate Research Scholar andDicke Fellow, Princeton Universityquantum science groups at the University of Sydney are also integrated withthe new Sydney Quantum Academy, which provides both scholarships and aPhD Experience Program with a complementary course work stream in11quantum science and technology.

Left: Testing setup for a cryogenic high-speed multiplexer to reduce theTriangular lattice of a planar crystal of beryllium ions trapped in anumber of control lines coming into a cryostat and control multiple qubitsPenning trap. Credit: Robert Wolf (QCL)using low temperature signal distribution. Credit: John Hornibrook (QNL)Right: Electron micrograph of a bilayer photoresist forming a sub-micronWiring (left) and gate detail (right) of a quantum dot device. Twosydney.edu.auoverhang. Credit: Sebastian Pauka (QNL)Atoms that interact with light and microwave fields can be embedded indouble-quantum dots are coupled via an additional quantum state, withelectrons isolated by negative voltages on surface gates.transparent crystals to offer news ways to store and process quantumCredit: Xanthe Croot (QNL)information. Credit: John Bartholomew (QIL) and Cornelius Hempel (QCL)13

Maria Djuric, Bachelor of Science / Bachelor ofAdvanced Studies (Dalyell Scholars)“I am grateful for the opportunity to engage in currentresearch in the field of quantum information theory atsuch an early stage in my degree. It has provided mewith an idea of theoretical research as a career.”Harrison Ball, 2018 / PhD, U Sydney“At the Sydney Nano Institute I was fortunate to workalongside world class researchers, building realquantum hardware in cutting edge facilities.”Current role: Head of Research at quantum technologysoftware engineers.High-power laser system to ionise beryllium atoms for quantum simulationexperiments. Credit: Quantum Control Laboratorysydney.edu.austartup Q-CTRL, working with a team of physicists and“My quantum research at theUniversity of Sydney provided mewith the tools, ideas, and contactsI needed to become a professorat the Institute for QuantumComputing and co-found aquantum computing company.”15Joel Wallman2013 / PhD, U SydneyCurrent role: Assistant Professor, Institute for QuantumComputing & Department of Applied Mathematics,University of Waterloo

SYDNEY’S QUANTUM ECOSYSTEMAs well as attracting partnershipswith established tech companies likeMicrosoft, our innovative researchThe research at The University of Sydney pushes the boundaries of quantumis creating new companies that arescience. Joining our research team connects you to so much more thanhelping build the internationaljust great science.quantum technology sector.Our researchers are based in the Sydney Nanoscience Hub, which wasQ-CTRL (led by CEO Prof. Biercuk)purpose-built to enable world class research into nano- and quantum science.is Australia’s first venture-capitalThis state-of-the-art research facility allows us to achieve impact beyond ourbacked quantum technologyindividual laboratories.company and their focus isWe host a global research node of the Microsoft Station Q network (led bydeveloping software to reduceProf. Reilly) focused on engineering interfaces between classical and quantumerrors in quantum systems.View to clean rooms in the Sydney Nanoscience Hub. Precision airconditioning supplies highly filtered air to the cleanroom that maintainsthe particulate level to levels 100 times cleaner than the air in a modernoperating theatre.sydney.edu.ausystems for more powerful quantum machines.Our research also creates strongpartnerships with other researchSydney Quantum Academysydneyquantum.orginstitutions, both nationally andinternationally. The University ofAt the University of Sydney youSydney is a node within the ARCwill work with leaders in the fieldCentre of Excellence for Engineeredof quantum science to make newQuantum Systems, which links us todiscoveries and engineer newresearch and industry organisationstechnologies. And, in doing so,across Australia and in more thanyou will have developed key skillstwenty countries worldwide. Locally,in automation, innovative design,we are a founding member of theand quantitative analysis that willSydney Quantum Academy, togetherenable you to launch your careerwith UNSW, UTS and Macquariein research, industry, orUniversity. The academy is a NSWbusiness.government sponsored initiative to17nurture education, engagement andGet in touch with us to startinnovation in quantum science.your contribution.

Ashwin Singh, 2018 / Bachelor of Science (Honours),U Sydney Current role: PhD candidate at theUniversity of California, Berkeley“ Working on cutting edge projects with University ofSydney physicists who truly do understand quantummechanics opened my mind and shaped the scientistI aspire to be today.”Dominic Else, 2011 / Bachelor of Science (Honours),U Sydney Current role: Postdoctoral Fellow, MIT“Working in the quantum information group at Sydneywas my initiation into the fascinating forms thatquantum entanglement can take in quantum many-bodythis day”Pg 19: PhD student Tim Evans working on a quantum algorithm.Below: Linear Paul trap for quantum computing and quantum simulationwith171 Yb ions. Credit: Michael Biercuk (QCL)sydney.edu.ausystems, which I continue to explore in my research to19

The Quantum Nanoscience Laboratory (QNL) bridges the gap between fundamental quantum physics and the engineering approaches needed to scale quantum devices into quantum machines. The team focuses on the quantum-classical interface and the scale-up of quantum technology. The QNL also applies quantum technology in biomedicine by pioneering new

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