Overview
Background
Dr Jacqui Romero is an expert in experimental quantum information. Her research is focused on using higher-dimensional systems for exploring curious quantum physics phenomena and developing future quantum technologies. She is the group leader of the research team Qudits@UQ, there's more information on her group's webpage.
Jacqui was born and bred in Manila, Philippines. Hearing her high school physics teacher complain about quantum physics, she became curious and googled "quantum physics"—she has been hooked ever since. She holds BS Applied Physics magna cum laude and MS Physics degrees from the University of the Philippines. She finished her PhD at the University of Glasgow (in sunny Scotland!) where she was a researcher for seven years. In 2015, she moved to Brisbane to join the Quantum Technology group at the University of Queensland. In 2016 she took up an ARC DECRA fellowship with the same group. In 2019, she took up a Westpac Research Fellowship and formed her own team, Qudits@UQ. Jacqui is recognised for moving the shape of photons to mainstream quantum information. She has received several prestigious national and international awards which include: a L'Oreal-UNESCO For Women In Science award in 2017 (one of four in Australia), the Ruby Payne-Scott Medal of the Australian Institute of Physics for excellence in early-career research in 2018, and a L'Oreal-UNESCO For Women In Science International Rising Talent Award in 2019 (one of fifteen awards globally).
She is currently an associate professor and Westpac Research Fellow. She is also a chief investigator at the Centre of Excellence For Engineered Quantum Systems (EQUS).
Outside work, she is a busy mum to three lovely boys, and an occasional painter. She also loves sharing her research to the wider community, example here.
Availability
- Associate Professor Jacqui Romero is:
- Available for supervision
Fields of research
Qualifications
- Bachelor of Applied Physics, University of the Philippines Diliman
- Masters (Coursework) of Physics, University of the Philippines Diliman
- Doctor of Philosophy, University of Glasgow
Research interests
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Generating high-dimensional quantum states
Quantum information and quantum technologies are largely based on qubits—two-dimensional quantum systems that is the quantum counterpart of the classical bit. Given that quantum systems are naturally high-dimensional, the restriction to qubits is not necessary. Nature provides us with qudits—d-level quantum systems—which we could use to represent quantum information. Using qudits comes with immediate benefits like higher information capacity, and robustness to noise. Entanglement—the quintessential quantum phenomenon that allows stronger-than-classical correlations—is far richer offers more advantages in higher dimensions. We are interested in experimentally generating high-dimensional quantum states (entangled or otherwise!) for quantum communication and quantum computation by controlling the various properties of the photon.
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High-dimensional quantum information processing
Manipulating photonic high-dimensional quantum information becomes challenging both in scale and control as the qudit dimension increases. We are interested in designing devices (whether in free space or on-chip) that are both efficient and high-fidelity via inverse design. Here, the desired outputs and inputs are specified and the device is found either by computational search and optimisation, or by using good old optics
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Tools for characterising high-dimensional quantum information
As the space for quantum information increases, so does the difficulty of characterising of quantum states and quantum processes. For example, the parameter space for qudits grows as ~d^(2n), where d is the qudit dimension and n is the number of particles. We are interested in methods that scale more favourably with dimension, either by requiring fewer measurements or by being more computationally efficient.
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Higher-order maps
Higher-order maps act on quantum processes, rather than quantum states. Higher-order maps open more possibilities, one example is indefinite causal order, wherein the order of events are not definite (think of chicken and egg---both could come first!). We are interested in demonstrating new capabilities and advantages afforded by these higher-order maps for improving quantum communication and quantum computation.
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Quantum error correction and noise mitigation
Quantum information often needs to be protected from noise in order to be useful. One approach is to encode quantum information in a higher-dimensional quantum system, as in quantum error correction. Correcting for any arbitrary error is extremely challenging. One way to make quantum error correction more manageable is to understand the noise affecting the quantum system and tailor highly optimised protocols based on these noise characteristics. We are interested in using high-dimensional quantum systems to test quantum error correction and noise mitigation protocols.
Works
Search Professor Jacqui Romero’s works on UQ eSpace
2024
Journal Article
Guest Editorial The Quantum Internet: Principles, Protocols and Architectures
Cacciapuoti, Angela Sara, Broadbent, Anne, Diamanti, Eleni, Romero, Jacquiline and Wehner, Stephanie (2024). Guest Editorial The Quantum Internet: Principles, Protocols and Architectures. IEEE Journal on Selected Areas in Communications, 42 (7), 1719-1722. doi: 10.1109/jsac.2024.3379106
2023
Journal Article
Randomness-free test of nonclassicality: a proof of concept
Ma, Zhonghua, Rambach, Markus, Goswami, Kaumudibikash, Bhattacharya, Some Sankar, Banik, Manik and Romero, Jacquiline (2023). Randomness-free test of nonclassicality: a proof of concept. Physical Review Letters, 131 (13) 130201, 1-7. doi: 10.1103/physrevlett.131.130201
2023
Journal Article
Approximate reconstructability of quantum states and noisy quantum secret sharing schemes
Ouyang, Yingkai, Goswami, Kaumudibikash, Romero, Jacquiline, Sanders, Barry C., Hsieh, Min-Hsiu and Tomamichel, Marco (2023). Approximate reconstructability of quantum states and noisy quantum secret sharing schemes. Physical Review A, 108 (1) 012425. doi: 10.1103/PhysRevA.108.012425
2022
Journal Article
Efficient Quantum State Tracking in Noisy Environments
Rambach, Markus, Youssry, Akram, Tomamichel, Marco and Romero, Jacquiline (2022). Efficient Quantum State Tracking in Noisy Environments. Quantum Science and Technology, 8 (1) 015010, 1-9. doi: 10.1088/2058-9565/aca049
2022
Journal Article
Entanglement levels up
Romero, Jacquiline and Rambach, Markus (2022). Entanglement levels up. Optics and Photonics News, 33 (1), 32-39. doi: 10.1364/opn.33.1.000032
2022
Journal Article
2022 roadmap on integrated quantum photonics
Moody, Galan, Sorger, Volker J., Blumenthal, Daniel J., Juodawlkis, Paul W., Loh, William, Sorace-Agaskar, Cheryl, Jones, Alex E., Balram, Krishna C., Matthews, Jonathan C. F., Laing, Anthony, Davanco, Marcelo, Chang, Lin, Bowers, John E., Quack, Niels, Galland, Christophe, Aharonovich, Igor, Wolff, Martin A., Schuck, Carsten, Sinclair, Neil, Lončar, Marko, Komljenovic, Tin, Weld, David, Mookherjea, Shayan, Buckley, Sonia, Radulaski, Marina, Reitzenstein, Stephan, Pingault, Benjamin, Machielse, Bartholomeus, Mukhopadhyay, Debsuvra ... Camacho, Ryan M. (2022). 2022 roadmap on integrated quantum photonics. Journal of Physics: Photonics, 4 (1) 012501, 012501. doi: 10.1088/2515-7647/ac1ef4
2021
Journal Article
Experimental characterization of a non-Markovian quantum process
Goswami, K., Giarmatzi, C., Monterola, C., Shrapnel, S., Romero, J. and Costa, F. (2021). Experimental characterization of a non-Markovian quantum process. Physical Review A, 104 (2) 022432. doi: 10.1103/physreva.104.022432
2021
Conference Publication
Robust and efficient high-dimensional quantum state tomography
Rambach, Markus, Qaryan, Mahdi, Kewming, Michael, Ferrie, Christopher, White, Andrew G. and Romero, Jacquiline (2021). Robust and efficient high-dimensional quantum state tomography. Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 21-25 June 2021. New York, NY, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/CLEO/Europe-EQEC52157.2021.9541925
2021
Journal Article
Robust and efficient high-dimensional quantum state tomography
Rambach, Markus, Qaryan, Mahdi, Kewming, Michael, Ferrie, Christopher, White, Andrew G. and Romero, Jacquiline (2021). Robust and efficient high-dimensional quantum state tomography. Physical Review Letters, 126 (10) 100402, 100402. doi: 10.1103/physrevlett.126.100402
2020
Journal Article
Experiments on quantum causality
Goswami, K. and Romero, J. (2020). Experiments on quantum causality. AVS Quantum Science, 2 (3) 037101, 037101. doi: 10.1116/5.0010747
2020
Journal Article
Increasing communication capacity via superposition of order
Goswami, K., Cao, Y., Paz-Silva, G. A., Romero, J. and White, A. G. (2020). Increasing communication capacity via superposition of order. Physical Review Research, 2 (3) 033292. doi: 10.1103/physrevresearch.2.033292
2020
Journal Article
Hiding ignorance using high dimensions
Kewming, M. J., Shrapnel, S., White, A. G. and Romero, J. (2020). Hiding ignorance using high dimensions. Physical Review Letters, 124 (25) 250401, 250401. doi: 10.1103/physrevlett.124.250401
2020
Journal Article
Distribution of high-dimensional orbital angular momentum entanglement over a 1 km few-mode fiber
Cao, Huan, Gao, She-Cheng, Zhang, Chao, Wang, Jian, He, De-Yong, Liu, Bi-Heng, Zhou, Zheng-Wei, Chen, Yu-Jie, Li, Zhao-Hui, Yu, Si-Yuan, Romero, Jacquiline, Huang, Yun-Feng, Li, Chuan-Feng and Guo, Guang-Can (2020). Distribution of high-dimensional orbital angular momentum entanglement over a 1 km few-mode fiber. Optica, 7 (3), 232-237. doi: 10.1364/OPTICA.381403
2020
Conference Publication
High-dimensional quantum gates for azimuthal modes
Dahl, Daniel S., Romero, Jacquiline, Ploschner, Martin, Fontaine, Nicolas K. and Carpenter, Joel (2020). High-dimensional quantum gates for azimuthal modes. Conference on Lasers and Electro-Optics/Pacific Rim 2020, Sydney, Australia, 3–5 August 2020. Washington, DC, United States: OSA. doi: 10.1364/cleopr.2020.p5_2
2019
Journal Article
Shaping up high-dimensional quantum information
Romero, Jacq (2019). Shaping up high-dimensional quantum information. Australian Physics, 56 (4), 84-86.
2019
Conference Publication
Ignorance of the whole does not imply ignorance of the parts: qudit random access codes in spatial modes of light
Kewming, Michael J., Shrapnel, Sally, White, Andrew G. and Romero, Jacquiline (2019). Ignorance of the whole does not imply ignorance of the parts: qudit random access codes in spatial modes of light. Quantum Information and Measurement, QIM 2019, Rome, Italy, 4 - 6 April 2019. Washington, DC, United States: The Optical Society. doi: 10.1364/QIM.2019.F5A.78
2018
Journal Article
Indefinite causal order in a quantum switch
Goswami, K., Giarmatzi, C., Kewming, M., Costa, F., Branciard, C., Romero, J. and White, A. G. (2018). Indefinite causal order in a quantum switch. Physical Review Letters, 121 (9) 090503, 090503. doi: 10.1103/physrevlett.121.090503
2018
Conference Publication
Spatial modes for testing indefinite causal order
Romero, Jacquiline, Goswami, Kaumudibikash, Giarmatzi, Christina, Costa, Fabio, Branciard, Cyril and White, Andrew G. (2018). Spatial modes for testing indefinite causal order. Complex Light and Optical Forces XII 2018, San Francisco, CA, United States, 30 January - 1 February 2018. Bellingham, WA, United States: SPIE. doi: 10.1117/12.2292732
2017
Journal Article
Roadmap on structured light
Rubinsztein-Dunlop, Halina, Forbes, Andrew, Berry, M. V., Dennis, M. R., Andrews, David L., Mansuripur, Masud, Denz, Cornelia, Alpmann, Christina, Banzer, Peter, Bauer, Thomas, Karimi, Ebrahim, Marrucci, Lorenzo, Padgett, Miles, Ritsch-Marte, Monika, Litchinitser, Natalia M., Bigelow, Nicholas P., Rosales-Guzman, C., Belmonte, A., Torres, J. P., Neely, Tyler W., Baker, Mark, Gordon, Reuven, Stilgoe, Alexander B., Romero, Jacquiline, White, Andrew G., Fickler, Robert, Willner, Alan E., Xie, Guodong, McMorran, Benjamin and Weiner, Andrew M. (2017). Roadmap on structured light. Journal of Optics, 19 (1) 013001, 013001. doi: 10.1088/2040-8978/19/1/013001
2016
Journal Article
Coherent absorption of N00N states
Roger, Thomas, Restuccia, Sara, Lyons, Ashley, Giovannini, Daniel, Romero, Jacquiline, Jeffers, John, Padgett, Miles and Faccio, Daniele (2016). Coherent absorption of N00N states. Physical Review Letters, 117 (2) 023601, 57-62. doi: 10.1103/PhysRevLett.117.023601
Funding
Current funding
Past funding
Supervision
Availability
- Associate Professor Jacqui Romero is:
- Available for supervision
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Supervision history
Current supervision
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Doctor Philosophy
High-dimensional entanglement sources on-chip
Principal Advisor
Other advisors: Dr Daniel Peace
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Doctor Philosophy
Demonstration of relativistic Bohmian trajectories of photons
Principal Advisor
Other advisors: Professor Timothy Ralph, Dr Daniel Peace
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Completed supervision
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2023
Master Philosophy
Sharing Secrets Using Quantum Physics
Principal Advisor
Other advisors: Professor Andrew White, Dr Markus Rambach
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2021
Doctor Philosophy
Applications of higher-order quantum maps
Principal Advisor
Other advisors: Professor Andrew White
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2021
Doctor Philosophy
High-Dimensional Quantum Information
Principal Advisor
Other advisors: Professor Gerard Milburn, Associate Professor Sally Shrapnel, Professor Andrew White
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2022
Master Philosophy
Encoding and Measuring Information in High-Dimensional Quantum States
Associate Advisor
Other advisors: Dr Markus Rambach, Professor Andrew White
Media
Enquiries
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