Quantum correlations in optical angle–orbital angular momentum variables J Leach, B Jack, J Romero, AK Jha, AM Yao, S Franke-Arnold, DG Ireland, ... Science 329 (5992), 662-665, 2010 | 433 | 2010 |

Roadmap on structured light H Rubinsztein-Dunlop, A Forbes, MV Berry, MR Dennis, DL Andrews, ... Journal of Optics 19 (1), 013001, 2016 | 409 | 2016 |

Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces J Leach, B Jack, J Romero, M Ritsch-Marte, RW Boyd, AK Jha, SM Barnett, ... Optics express 17 (10), 8287-8293, 2009 | 185 | 2009 |

Holographic ghost imaging and the violation of a Bell inequality B Jack, J Leach, J Romero, S Franke-Arnold, M Ritsch-Marte, SM Barnett, ... Physical review letters 103 (8), 083602, 2009 | 173 | 2009 |

Spatially structured photons that travel in free space slower than the speed of light D Giovannini, J Romero, V Potoček, G Ferenczi, F Speirits, SM Barnett, ... Science 347 (6224), 857-860, 2015 | 117 | 2015 |

Quantum digital spiral imaging L Chen, J Lei, J Romero Light: Science & Applications 3 (3), e153-e153, 2014 | 99 | 2014 |

Increasing the dimension in high-dimensional two-photon orbital angular momentum entanglement J Romero, D Giovannini, S Franke-Arnold, SM Barnett, MJ Padgett Physical Review A 86 (1), 012334, 2012 | 89 | 2012 |

Characterization of high-dimensional entangled systems via mutually unbiased measurements D Giovannini, J Romero, J Leach, A Dudley, A Forbes, MJ Padgett Physical review letters 110 (14), 143601, 2013 | 87 | 2013 |

Entanglement of arbitrary superpositions of modes within two-dimensional orbital angular momentum state spaces B Jack, AM Yao, J Leach, J Romero, S Franke-Arnold, DG Ireland, ... Physical Review A 81 (4), 043844, 2010 | 81 | 2010 |

Indefinite causal order in a quantum switch K Goswami, C Giarmatzi, M Kewming, F Costa, C Branciard, J Romero, ... Physical review letters 121 (9), 090503, 2018 | 59 | 2018 |

Violation of Leggett inequalities in orbital angular momentum subspaces J Romero, J Leach, B Jack, SM Barnett, MJ Padgett, S Franke-Arnold New Journal of Physics 12 (12), 123007, 2010 | 55 | 2010 |

Entangled optical vortex links J Romero, J Leach, B Jack, MR Dennis, S Franke-Arnold, SM Barnett, ... Physical review letters 106 (10), 100407, 2011 | 49 | 2011 |

Two-photon optics of Bessel-Gaussian modes M McLaren, J Romero, MJ Padgett, FS Roux, A Forbes Physical Review A 88 (3), 033818, 2013 | 40 | 2013 |

Coherent absorption of N00N states T Roger, S Restuccia, A Lyons, D Giovannini, J Romero, J Jeffers, ... Physical review letters 117 (2), 023601, 2016 | 36 | 2016 |

Parallel two-photon photopolymerization of microgear patterns G Bautista, MJ Romero, G Tapang, VR Daria Optics communications 282 (18), 3746-3750, 2009 | 36 | 2009 |

Bounds and optimisation of orbital angular momentum bandwidths within parametric down-conversion systems FM Miatto, D Giovannini, J Romero, S Franke-Arnold, SM Barnett, ... The European Physical Journal D 66 (7), 178, 2012 | 29 | 2012 |

Orbital angular momentum correlations with a phase-flipped Gaussian mode pump beam J Romero, D Giovannini, MG McLaren, EJ Galvez, A Forbes, MJ Padgett Journal of Optics 14 (8), 085401, 2012 | 26 | 2012 |

Hardy’s nonlocality proof using twisted photons L Chen, J Romero Optics express 20 (19), 21687-21692, 2012 | 24 | 2012 |

Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks D Giovannini, FM Miatto, J Romero, SM Barnett, JP Woerdman, ... New Journal of Physics 14 (7), 073046, 2012 | 21 | 2012 |

Tailored two-photon correlation and fair-sampling: a cautionary tale J Romero, D Giovannini, DS Tasca, SM Barnett, MJ Padgett New Journal of Physics 15 (8), 083047, 2013 | 18 | 2013 |