Associate Professor Jacqui Romero
Affiliate of ARC COE for Engineered Quantum Systems (EQUS)
ARC COE for Engineered Quantum Systems
Associate Professor
School of Mathematics and Physics
+61 7 334 67031
Physics Annexe (06), Room 327
Group Page
Teaching and Learning
Jacqui teaches parts of first-year Mechanics and Thermal Physics and fourth-year Quantum Technologies.
Researcher biography
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.
Journal Articles
Kaur, Tavshabad, Peace, Daniel and Romero, Jacquiline (2025). On-chip high-dimensional entangled photon sources. Journal of Optics, 27 (2) 023001, 1-25. doi: 10.1088/2040-8986/ada0c5
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
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
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
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
Romero, Jacquiline and Rambach, Markus (2022). Entanglement levels up. Optics and Photonics News, 33 (1), 32-39. doi: 10.1364/opn.33.1.000032
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
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
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
Goswami, K. and Romero, J. (2020). Experiments on quantum causality. AVS Quantum Science, 2 (3) 037101, 037101-3. doi: 10.1116/5.0010747
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
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
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
Romero, Jacq (2019). Shaping up high-dimensional quantum information. Australian Physics, 56 (4), 84-86.
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
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
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
Cai, Yu, Bancal, Jean-Daniel, Romero, Jacquiline and Scarani, Valerio (2016). A new device-independent dimension witness and its experimental implementation. Journal of Physics A: Mathematical and Theoretical, 49 (30) 305301, 305301. doi: 10.1088/1751-8113/49/30/305301
Giovannini, Daniel, Romero, Jacquiline, Potocek, Vaclav, Ferenczi, Gergely, Speirits, Fiona, Barnett, Stephen M., Faccio, Daniele and Padgett, Miles J. (2015). Spatially structured photons that travel in free space slower than the speed of light. Science, 347 (6224), 857-860. doi: 10.1126/science.aaa3035
Romero, Jacquiline and Padgett, Miles (2014). Practical bound for dimensionality in high-dimensional entanglement. Proceedings of the National Academy of Sciences of the United States of America, 111 (17), 6122-6123. doi: 10.1073/pnas.1404903111
Chen, Lixiang, Lei, Jijin and Romero, Jacquiline (2014). Quantum digital spiral imaging. Light: Science and Applications, 3 (3) 201434, e153-e153. doi: 10.1038/lsa.2014.34
Giovannini, D., Romero, J. and Padgett, M. J. (2014). Interference of probability amplitudes: a simple demonstration within the Hong-Ou-Mandel experiment. Journal of Optics, 16 (3), 032002. doi: 10.1088/2040-8978/16/3/032002
McLaren, Melanie, Romero, Jacquiline, Padgett, Miles J., Roux, Filippus S. and Forbes, Andrew (2013). Two-photon optics of Bessel-Gaussian modes. Physical Review A, 88 (3). doi: 10.1103/PhysRevA.88.033818
Romero, J., Giovannini, D., Tasca, D. S., Barnett, S. M. and Padgett, M. J. (2013). Tailored two-photon correlation and fair-sampling: a cautionary tale. New Journal of Physics, 15 (8) 083047, 083047. doi: 10.1088/1367-2630/15/8/083047
Giovannini, D., Romero, J., Leach, J., Dudley, A., Forbes, A. and Padgett, M. J. (2013). Characterization of high-dimensional entangled systems via mutually unbiased measurements. Physical Review Letters, 110 (14) 143601. doi: 10.1103/PhysRevLett.110.143601
Chen, Lixiang and Romero, Jacquiline (2012). Hardy's nonlocality proof using twisted photons. Optics Express, 20 (19), 21687-21692. doi: 10.1364/OE.20.021687
Romero, J., Giovannini, D., McLaren, M. G., Galvez, E. J., Forbes, A. and Padgett, M. J. (2012). Orbital angular momentum correlations with a phase-flipped Gaussian mode pump beam. Journal of Optics, 14 (8), 085401. doi: 10.1088/2040-8978/14/8/085401
Romero, J., Giovannini, D., Franke-Arnold, S., Barnett, S. M. and Padgett, M. J. (2012). Increasing the dimension in high-dimensional two-photon orbital angular momentum entanglement. Physical Review A, 86 (1) 012334. doi: 10.1103/PhysRevA.86.012334
Giovannini, D., Miatto, F. M., Romero, J., Barnett, S. M., Woerdman, J. P. and Padgett, M. J. (2012). Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks. New Journal of Physics, 14 (7) 073046, 073046. doi: 10.1088/1367-2630/14/7/073046
Miatto, F. M., Giovannini, D., Romero, J., Franke-Arnold, S., Barnett, S. M. and Padgett, M. J. (2012). Bounds and optimisation of orbital angular momentum bandwidths within parametric down-conversion systems. European Physical Journal D, 66 (7) 178. doi: 10.1140/epjd/e2012-20736-x
Romero, J., Leach, J., Jack, B., Dennis, M. R., Franke-Arnold, S., Barnett, S. M. and Padgett, M. J. (2011). Entangled optical vortex links. Physical Review Letters, 106 (10) 100407. doi: 10.1103/PhysRevLett.106.100407
Romero, J., Leach, J., Jack, B., Barnett, S. M., Padgett, M. J. and Franke-Arnold, S. (2010). Violation of Leggett inequalities in orbital angular momentum subspaces. New Journal of Physics, 12 (12), 123007. doi: 10.1088/1367-2630/12/12/123007
Leach, Jonathan, Jack, Barry, Romero, Jacqui, Jha, Anand K., Yao, Alison M., Franke-Arnold, Sonja, Ireland, David G., Boyd, Robert W., Barnett, Stephen M. and Padgett, Miles J. (2010). Quantum correlations in optical angle-orbital angular momentum variables. Science, 329 (5992), 662-665. doi: 10.1126/science.1190523
Jack, B., Yao, A. M., Leach, J., Romero, J., Franke-Arnold, S., Ireland, D. G., Barnett, S. M. and Padgett, M. J. (2010). Entanglement of arbitrary superpositions of modes within two-dimensional orbital angular momentum state spaces. Physical Review A: Atomic, Molecular, and Optical Physics, 81 (4), 043844-1-043844-5. doi: 10.1103/PhysRevA.81.043844
Romero, Mary Jacquiline, Bautista, Godofredo, Jr., Ricardo Daria, Vincent and Saloma, Caesar (2010). Laser confocal microscope with wavelet-profiled point spread function. Optics Communications, 283 (7), 1217-1221. doi: 10.1016/j.optcom.2009.11.077
Bautista, Godofredo, Romero, Mary Jacquiline, Tapang, Giovanni and Daria, Vincent Ricardo (2009). Parallel two-photon photopolymerization of microgear patterns. Optics Communications, 282 (18), 3746-3750. doi: 10.1016/j.optcom.2009.06.047
Jack, B., Leach, J., Romero, J., Franke-Arnold, S., Ritsch-Marte, M., Barnett, S. M. and Padgett, M. J. (2009). Holographic ghost imaging and the violation of a bell inequality. Physical Review Letters, 103 (8) 083602. doi: 10.1103/PhysRevLett.103.083602
Leach, J., Jack, B., Romero, J., Ritsch-Marte, M., Boyd, R. W., Jha, A. K., Barnett, S. M., Franke-Arnold, S. and Padgett, M. J. (2009). Violation of a bell inequality in two-dimensional orbital angular momentum state-spaces. Optics Express, 17 (10), 8287-8293. doi: 10.1364/OE.17.008287
Romero, Mary Jacquiline and Daria, Vincent Ricardo (2007). Modified filter design to optimize the synthetic reference wave in the generalized phase contrast method. Optics Communications, 280 (2), 237-242. doi: 10.1016/j.optcom.2007.08.029
Conference Papers
Dahl, Daniel S., Plöschner, Martin, Fontaine, Nicolas K., Romero, Jacqui and Carpenter, Joel (2024). Programable High-dimensional Quantum Gates via MPLC. Frontiers in Optics 2024, Denver, CO United States, 23-26 September 2024. Washington, DC United States: Optica. doi: 10.1364/fio.2024.fm5c.5
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
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
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
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
Roger, Thomas, Restuccia, Sara, Lyons, Ashley, Giovannini, Daniel, Romero, Jacquiline, Jeffers, John, Padgett, Miles and Faccio, Daniele (2016). Coherent absorption of N00N states. 2016 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA USA, 5-10 June 2016. Piscataway, NJ USA: Institute of Electrical and Electronics Engineers. doi: 10.1364/CLEO_QELS.2016.FM1D.6
Romero, Jacquiline, Giovannini, Daniele, Franke-Arnold, Sonja, Barnett, Stephen M. and Padgett, Miles J. (2012). Increasing the orbital angular momentum bandwidth of entangled photons. Conference on Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, Edinburgh Scotland, Sep 24-26, 2012. BELLINGHAM: SPIE-INT SOC OPTICAL ENGINEERING. doi: 10.1117/12.979888