Beating the standard quantum limit with four-entangled photons T Nagata, R Okamoto, JL O'brien, K Sasaki, S Takeuchi Science 316 (5825), 726-729, 2007 | 804 | 2007 |

Demonstration of an optical quantum controlled-NOT gate without path interference R Okamoto, HF Hofmann, S Takeuchi, K Sasaki Physical review letters 95 (21), 210506, 2005 | 270 | 2005 |

An entanglement-enhanced microscope T Ono, R Okamoto, S Takeuchi Nature communications 4 (1), 2426, 2013 | 267 | 2013 |

Beating the standard quantum limit: phase super-sensitivity of N-photon interferometers R Okamoto, HF Hofmann, T Nagata, JL O'Brien, K Sasaki, S Takeuchi New Journal of Physics 10 (7), 073033, 2008 | 104 | 2008 |

Scalable spatial superresolution using entangled photons LA Rozema, JD Bateman, DH Mahler, R Okamoto, A Feizpour, A Hayat, ... Physical review letters 112 (22), 223602, 2014 | 96 | 2014 |

An entanglement filter R Okamoto, JL O'Brien, HF Hofmann, T Nagata, K Sasaki, S Takeuchi Science 323 (5913), 483-485, 2009 | 89 | 2009 |

Realization of a Knill-Laflamme-Milburn controlled-NOT photonic quantum circuit combining effective optical nonlinearities R Okamoto, JL O’Brien, HF Hofmann, S Takeuchi Proceedings of the National Academy of Sciences 108 (25), 10067-10071, 2011 | 85 | 2011 |

Experimental demonstration of adaptive quantum state estimation R Okamoto, M Iefuji, S Oyama, K Yamagata, H Imai, A Fujiwara, ... Physical review letters 109 (13), 130404, 2012 | 79 | 2012 |

0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography M Okano, HH Lim, R Okamoto, N Nishizawa, S Kurimura, S Takeuchi Scientific reports 5 (1), 18042, 2015 | 60 | 2015 |

Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement A Tanaka, R Okamoto, HH Lim, S Subashchandran, M Okano, L Zhang, ... Optics express 20 (23), 25228-25238, 2012 | 60 | 2012 |

Quantum interference fringes beating the diffraction limit Y Kawabe, H Fujiwara, R Okamoto, K Sasaki, S Takeuchi Optics express 15 (21), 14244-14250, 2007 | 60 | 2007 |

Implementation of a quantum controlled-SWAP gate with photonic circuits T Ono, R Okamoto, M Tanida, HF Hofmann, S Takeuchi Scientific reports 7 (1), 45353, 2017 | 58 | 2017 |

Dispersion cancellation in high-resolution two-photon interference M Okano, R Okamoto, A Tanaka, S Ishida, N Nishizawa, S Takeuchi Physical Review A 88 (4), 043845, 2013 | 42 | 2013 |

Highly indistinguishable heralded single-photon sources using parametric down conversion M Tanida, R Okamoto, S Takeuchi Optics express 20 (14), 15275-15285, 2012 | 41 | 2012 |

High-yield single-photon source using gated spontaneous parametric downconversion S Takeuchi, R Okamoto, K Sasaki Applied optics 43 (30), 5708-5711, 2004 | 36 | 2004 |

Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals M Okano, R Okamoto, A Tanaka, S Subashchandran, S Takeuchi Optics Express 20 (13), 13977-13987, 2012 | 30 | 2012 |

Experimental demonstration of a quantum shutter closing two slits simultaneously R Okamoto, S Takeuchi Scientific reports 6 (1), 35161, 2016 | 22 | 2016 |

Tailoring two-photon interference with phase dispersion R Okamoto, S Takeuchi, K Sasaki Physical Review A 74 (1), 011801, 2006 | 22 | 2006 |

Nonlocal position changes of a photon revealed by quantum routers AC Elitzur, E Cohen, R Okamoto, S Takeuchi Scientific reports 8 (1), 7730, 2018 | 21 | 2018 |

Realization of multiplexing of heralded single photon sources using photon number resolving detectors T Kiyohara, R Okamoto, S Takeuchi Optics Express 24 (24), 27288-27297, 2016 | 20 | 2016 |