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Associate Professor Jacqui Romero
Associate Professor

Jacqui Romero

Email: 
Phone: 
+61 7 334 67031

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

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

  • 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.

Works

Search Professor Jacqui Romero’s works on UQ eSpace

43 works between 2007 and 2024

21 - 40 of 43 works

2016

Journal Article

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

A new device-independent dimension witness and its experimental implementation

2016

Conference Publication

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

Coherent absorption of N00N states

2015

Journal Article

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

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

2014

Journal Article

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

Practical bound for dimensionality in high-dimensional entanglement

2014

Journal Article

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

Quantum digital spiral imaging

2014

Journal Article

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

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

2013

Journal Article

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

Two-photon optics of Bessel-Gaussian modes

2013

Journal Article

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

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

2013

Journal Article

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

Characterization of high-dimensional entangled systems via mutually unbiased measurements

2012

Journal Article

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

Hardy's nonlocality proof using twisted photons

2012

Journal Article

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

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

2012

Journal Article

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

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

2012

Journal Article

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

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

2012

Journal Article

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

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

2011

Journal Article

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

Entangled optical vortex links

2010

Journal Article

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

Violation of Leggett inequalities in orbital angular momentum subspaces

2010

Journal Article

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

Quantum correlations in optical angle-orbital angular momentum variables

2010

Journal Article

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

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

2010

Journal Article

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

Laser confocal microscope with wavelet-profiled point spread function

2009

Journal Article

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

Parallel two-photon photopolymerization of microgear patterns

Funding

Current funding

  • 2018 - 2025
    ARC Centre of Excellence for Engineered Quantum Systems (EQuS2)
    ARC Centres of Excellence
    Open grant

Past funding

  • 2020 - 2021
    [Quantum Accelerator] Efficient Fast Photonic Integrated Circuits for Photonic Quantum Computing
    United States Air Force Office of Scientific Research
    Open grant
  • 2020 - 2023
    Securing the quantum internet with high-dimensional quantum systems
    ARC Discovery Projects
    Open grant
  • 2019 - 2022
    Sharing secrets using quantum physics
    Westpac Foundation
    Open grant
  • 2019
    Multimode optical waveguide characterisation facility
    UQ Major Equipment and Infrastructure
    Open grant
  • 2018
    Photonic neuromorphic computing
    UQ Early Career Researcher
    Open grant
  • 2016
    Dr Mary Jacquiline Romero - Maternity Funding (Advance Queensland Women's Academic Fund)
    Queensland Government Advance Queensland Women's Academic Fund
    Open grant
  • 2016 - 2019
    Knowledge, Ignorance, and Security in Higher-dimensional Quantum Systems
    ARC Discovery Early Career Researcher Award
    Open grant

Supervision

Availability

Associate Professor Jacqui Romero is:
Available for supervision

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Supervision history

Current supervision

  • Doctor Philosophy

    High-dimensional entanglement sources on-chip

    Principal Advisor

    Other advisors: Dr Daniel Peace

  • Doctor Philosophy

    Demonstration of relativistic Bohmian trajectories of photons

    Principal Advisor

    Other advisors: Professor Timothy Ralph, Dr Daniel Peace

  • Doctor Philosophy

    Qudits on chip

    Principal Advisor

    Other advisors: Dr Daniel Peace

Completed supervision

Media

Enquiries

For media enquiries about Associate Professor Jacqui Romero's areas of expertise, story ideas and help finding experts, contact our Media team:

communications@uq.edu.au