OR

Browse By

Associate Professor Jacqui Romero

Associate Professor

School of Mathematics and Physics
Faculty of Science
m.romero@uq.edu.au
+61 7 334 67031

Overview

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.

Research Interests

  • 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.
  • 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!
  • 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.
  • 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.
  • 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.

Qualifications

  • Master of Physics, University of the Philippines Diliman
  • Bachelor of Applied Science, University of the Philippines Diliman
  • Doctor of Philosophy, University of Glasgow

Publications

  • 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

  • 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

  • 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

View all Publications

Grants

View all Grants

Supervision

View all Supervision

Publications

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 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • Shaping up high-dimensional quantum information

    Romero, Jacq (2019). Shaping up high-dimensional quantum information. Australian Physics, 56 (4), 84-86.

  • 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

  • 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

  • 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

  • A new device-independent dimension witness and its experimental implementation

    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

  • Spatially structured photons that travel in free space slower than the speed of light

    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

  • Practical bound for dimensionality in high-dimensional entanglement

    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

  • Quantum digital spiral imaging

    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

  • Interference of probability amplitudes: a simple demonstration within the Hong-Ou-Mandel experiment

    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

  • Two-photon optics of Bessel-Gaussian modes

    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

  • Tailored two-photon correlation and fair-sampling: a cautionary tale

    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

  • Characterization of high-dimensional entangled systems via mutually unbiased measurements

    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

  • Hardy's nonlocality proof using twisted photons

    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

  • Orbital angular momentum correlations with a phase-flipped Gaussian mode pump beam

    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

  • Increasing the dimension in high-dimensional two-photon orbital angular momentum entanglement

    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). doi: 10.1103/PhysRevA.86.012334

  • Bounds and optimisation of orbital angular momentum bandwidths within parametric down-conversion systems

    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

  • Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks

    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. doi: 10.1088/1367-2630/14/7/073046

  • Entangled optical vortex links

    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). doi: 10.1103/PhysRevLett.106.100407

  • Violation of Leggett inequalities in orbital angular momentum subspaces

    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

  • Quantum correlations in optical angle-orbital angular momentum variables

    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

  • Entanglement of arbitrary superpositions of modes within two-dimensional orbital angular momentum state spaces

    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

  • Laser confocal microscope with wavelet-profiled point spread function

    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

  • Parallel two-photon photopolymerization of microgear patterns

    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

  • Holographic ghost imaging and the violation of a bell inequality

    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

  • Violation of a bell inequality in two-dimensional orbital angular momentum state-spaces

    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

  • Modified filter design to optimize the synthetic reference wave in the generalized phase contrast method

    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 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

  • 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

  • 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

  • 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

  • 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. 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

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

  • High-dimensional entanglement sources on-chip

    Doctor Philosophy — Principal Advisor

    Other advisors:

  • Qudits on chip

    Doctor Philosophy — Principal Advisor

    Other advisors:

  • Demonstration of relativistic Bohmian trajectories of photons

    Doctor Philosophy — Principal Advisor

    Other advisors:

Completed Supervision

For Media assistance please contact The Office of Marketing and Communications, (07) 3365 1120

Links

ResearcherID: A-1249-2013

ORCID: 0000-0002-5840-2606

Scopus ID: 22942230800

Google Scholar ID: i3d4BAoAAAAJ

Personal Profile: Link

Unit Links
Other Media
Social Media

Related Resources

Similar Staff
Researchers in Associated Units
Fields of Research