@article{40371,
  abstract     = {{<jats:p>Multimode integrated interferometers have great potential for both spectral engineering and metrological applications. However, the material dispersion of integrated platforms constitutes an obstacle that limits the performance and precision of such interferometers. At the same time, two-colour nonlinear interferometers present an important tool for metrological applications, when measurements in a certain frequency range are difficult. In this manuscript, we theoretically developed and investigated an integrated multimode two-colour SU(1,1) interferometer operating in a supersensitive mode. By ensuring the proper design of the integrated platform, we suppressed the dispersion, thereby significantly increasing the visibility of the interference pattern. The use of a continuous wave pump laser provided the symmetry between the spectral shapes of the signal and idler photons concerning half the pump frequency, despite different photon colours. We demonstrate that such an interferometer overcomes the classical phase sensitivity limit for wide parametric gain ranges, when up to 3×104 photons are generated.</jats:p>}},
  author       = {{Ferreri, Alessandro and Sharapova, Polina R.}},
  issn         = {{2073-8994}},
  journal      = {{Symmetry}},
  keywords     = {{Physics and Astronomy (miscellaneous), General Mathematics, Chemistry (miscellaneous), Computer Science (miscellaneous)}},
  number       = {{3}},
  publisher    = {{MDPI AG}},
  title        = {{{Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer}}},
  doi          = {{10.3390/sym14030552}},
  volume       = {{14}},
  year         = {{2022}},
}

@article{30210,
  abstract     = {{Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properly use these components in the implementation of different quantum protocols, photons with different properties are required. In this paper, we theoretically demonstrate a flexible source of correlated photons built on the LNOI waveguide of a special geometry. This source is based on the parametric down-conversion (PDC) process, in which the signal and idler photons are generated at the telecom wavelength and have different spatial profiles and polarizations, but the same group velocities. Distinguishability in polarizations and spatial profiles facilitates the routing and manipulating individual photons, while the equality of their group velocities leads to the absence of temporal walk-off between photons. We show how the spectral properties of the generated photons and the number of their frequency modes can be controlled depending on the pump characteristics and the waveguide length. Finally, we discuss special regimes, in which narrowband light with strong frequency correlations and polarization-entangled Bell states are generated at the telecom wavelength.}},
  author       = {{Ebers, Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier, Cedrik and Förstner, Jens and Sharapova, Polina R.}},
  issn         = {{2515-7647}},
  journal      = {{Journal of Physics: Photonics}},
  keywords     = {{tet_topic_waveguide}},
  pages        = {{025001}},
  publisher    = {{IOP Publishing}},
  title        = {{{Flexible source of correlated photons based on LNOI rib waveguides}}},
  doi          = {{10.1088/2515-7647/ac5a5b}},
  volume       = {{4}},
  year         = {{2022}},
}

@article{26889,
  author       = {{Luo, Kai Hong and Santandrea, Matteo and Stefszky, Michael and Sperling, Jan and Massaro, Marcello and Ferreri, Alessandro and Sharapova, Polina and Herrmann, Harald and Silberhorn, Christine}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Quantum optical coherence: From linear to nonlinear interferometers}}},
  doi          = {{10.1103/physreva.104.043707}},
  year         = {{2021}},
}

@article{21547,
  author       = {{Riabinin, Matvei and Sharapova, Polina and Bartley, Tim and Meier, Torsten}},
  issn         = {{2399-6528}},
  journal      = {{Journal of Physics Communications}},
  number       = {{4}},
  title        = {{{Generating two-mode squeezing with multimode measurement-induced nonlinearity}}},
  doi          = {{10.1088/2399-6528/abeec2}},
  volume       = {{5}},
  year         = {{2021}},
}

@inproceedings{40374,
  abstract     = {{<jats:p>We present a frequency multimode integrated SU (1,1) interferometer with a polarization converter and strong signal-idler photon correlations. Phase sensitivity below the shot noise limit is demonstrated, various filtering and seeding strategies are discussed.</jats:p>}},
  author       = {{Ferreri, A. and Santandrea, Matteo and Stefszky, Michael and Luo, Kai Hong and Herrmann, Harald and Silberhorn, Christine and Sharapova, Polina}},
  booktitle    = {{Conference on Lasers and Electro-Optics}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Multimode integrated SU(1,1) interferometer}}},
  doi          = {{10.1364/cleo_qels.2021.ftu1n.6}},
  year         = {{2021}},
}

@article{40364,
  author       = {{Sharapova, Polina R. and Frascella, G. and Riabinin, M. and Pérez, A. M. and Tikhonova, O. V. and Lemieux, S. and Boyd, R. W. and Leuchs, G. and Chekhova, M. V.}},
  issn         = {{2643-1564}},
  journal      = {{Physical Review Research}},
  keywords     = {{General Engineering}},
  number       = {{1}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Properties of bright squeezed vacuum at increasing brightness}}},
  doi          = {{10.1103/physrevresearch.2.013371}},
  volume       = {{2}},
  year         = {{2020}},
}

@article{40381,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>The phenomenon of entanglement is the basis of quantum information and quantum communication processes. Entangled systems with a large number of photons are of great interest at present because they provide a platform for streaming technologies based on photonics. In this paper we present a device which operates with four-photons and based on the Hong–Ou–Mandel interference. The presented device allows to maximize the degree of spatial entanglement and generate the highly entangled four-dimensional Bell states. Furthermore, the use of the interferometer in different regimes leads to fast interference fringes in the coincidence probability with period of oscillations twice smaller than the pump wavelength. We have a good agreement between theoretical simulations and experimental results.</jats:p>}},
  author       = {{Ferreri, A and Ansari, V and Brecht, Benjamin and Silberhorn, Christine and Sharapova, Polina R.}},
  issn         = {{2058-9565}},
  journal      = {{Quantum Science and Technology}},
  keywords     = {{Electrical and Electronic Engineering, Physics and Astronomy (miscellaneous), Materials Science (miscellaneous), Atomic and Molecular Physics, and Optics}},
  number       = {{4}},
  publisher    = {{IOP Publishing}},
  title        = {{{Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference}}},
  doi          = {{10.1088/2058-9565/abb411}},
  volume       = {{5}},
  year         = {{2020}},
}

@article{12919,
  author       = {{Georgi, Philip and Massaro, Marcello and Luo, Kai Hong and Sain, Basudeb and Montaut, Nicola and Herrmann, Harald and Weiss, Thomas and Li, Guixin and Silberhorn, Christine and Zentgraf, Thomas}},
  issn         = {{2047-7538}},
  journal      = {{Light: Science & Applications}},
  pages        = {{70}},
  title        = {{{Metasurface interferometry toward quantum sensors}}},
  doi          = {{10.1038/s41377-019-0182-6}},
  volume       = {{8}},
  year         = {{2019}},
}

@article{37288,
  abstract     = {{<jats:p>An integrated chip with quantum state generation, active polarization manipulation, and precise time control is demonstrated.</jats:p>}},
  author       = {{Luo, Kai-Hong and Brauner, Sebastian and Eigner, Christof and Sharapova, Polina and Ricken, Raimund and Meier, Torsten and Herrmann, Harald and Silberhorn, Christine}},
  issn         = {{2375-2548}},
  journal      = {{Science Advances}},
  keywords     = {{Multidisciplinary}},
  number       = {{1}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  title        = {{{Nonlinear integrated quantum electro-optic circuits}}},
  doi          = {{10.1126/sciadv.aat1451}},
  volume       = {{5}},
  year         = {{2019}},
}

@unpublished{22884,
  abstract     = {{Measurement-induced nonclassical effects in a two-mode interferometer are
investigated theoretically using numerical simulations and analytical results.
We demonstrate that for certain parameters measurements within the
interferometer lead to the occurrence of two-mode squeezing. The results
strongly depend on the detection probability, the phase inside the
interferometer, and the choice of the input states. The appropriate parameters
for maximized squeezing are obtained. We analyze the influence of losses and
confirm that the predicted effects are within reach of current experimental
techniques.}},
  author       = {{Riabinin, Matvei and Sharapova, Polina and Bartley, Tim and Meier, Torsten}},
  booktitle    = {{arXiv:1912.09097}},
  title        = {{{Generating two-mode squeezing with multimode measurement-induced nonlinearity}}},
  year         = {{2019}},
}

@article{40384,
  author       = {{Ferreri, Alessandro and Ansari, V. and Silberhorn, Christine and Sharapova, Polina R.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{5}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Temporally multimode four-photon Hong-Ou-Mandel interference}}},
  doi          = {{10.1103/physreva.100.053829}},
  volume       = {{100}},
  year         = {{2019}},
}

@article{13287,
  author       = {{Driben, R. and Konotop, V. V. and Malomed, B. A. and Meier, Torsten and Yulin, A. V.}},
  issn         = {{2470-0045}},
  journal      = {{Physical Review E}},
  number       = {{6}},
  title        = {{{Nonlinearity-induced localization in a periodically driven semidiscrete system}}},
  doi          = {{10.1103/physreve.97.062210}},
  volume       = {{97}},
  year         = {{2018}},
}

@article{4368,
  author       = {{Driben, R. and Konotop, V. V. and Malomed, B. A. and Meier, Torsten and Yulin, A. V.}},
  issn         = {{2470-0045}},
  journal      = {{Physical Review E}},
  number       = {{6}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Nonlinearity-induced localization in a periodically driven semidiscrete system}}},
  doi          = {{10.1103/physreve.97.062210}},
  volume       = {{97}},
  year         = {{2018}},
}

@article{40385,
  author       = {{Sharapova, Polina R. and Tikhonova, O. V. and Lemieux, S. and Boyd, R. W. and Chekhova, M. V.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{5}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Bright squeezed vacuum in a nonlinear interferometer: Frequency and temporal Schmidt-mode description}}},
  doi          = {{10.1103/physreva.97.053827}},
  volume       = {{97}},
  year         = {{2018}},
}

@article{13906,
  author       = {{Sharapova, Polina and Luo, Kai Hong and Herrmann, Harald and Reichelt, Matthias and Meier, Torsten and Silberhorn, Christine}},
  issn         = {{1367-2630}},
  journal      = {{New Journal of Physics}},
  number       = {{12}},
  publisher    = {{IOP Publishing}},
  title        = {{{Toolbox for the design of LiNbO3-based passive and active integrated quantum circuits}}},
  doi          = {{10.1088/1367-2630/aa9033}},
  volume       = {{19}},
  year         = {{2017}},
}

@article{13905,
  author       = {{Sharapova, Polina and Luo, Kai Hong and Herrmann, Harald and Reichelt, Matthias and Silberhorn, Christine and Meier, Torsten}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{4}},
  pages        = {{043857}},
  publisher    = {{American Physical Society}},
  title        = {{{Modified two-photon interference achieved by the manipulation of entanglement}}},
  doi          = {{10.1103/physreva.96.043857}},
  volume       = {{96}},
  year         = {{2017}},
}

@article{26061,
  author       = {{Sharapova, Polina and Luo, Kai Hong and Herrmann, Harald and Reichelt, Matthias and Meier, Torsten and Silberhorn, Christine}},
  issn         = {{1367-2630}},
  journal      = {{New Journal of Physics}},
  number       = {{12}},
  publisher    = {{IOP Publishing}},
  title        = {{{Toolbox for the design of LiNbO3-based passive and active integrated quantum circuits}}},
  doi          = {{10.1088/1367-2630/aa9033}},
  volume       = {{19}},
  year         = {{2017}},
}

@inproceedings{13903,
  author       = {{Höpker, Jan Philipp and Bartnick, Moritz and Meyer-Scott, Evan and Thiele, Frederik and Meier, Torsten and Bartley, Tim and Krapick, Stephan and Montaut, Nicola M. and Santandrea, Matteo and Herrmann, Harald and Lengeling, Sebastian and Ricken, Raimund and Quiring, Viktor and Lita, Adriana E. and Verma, Varun B. and Gerrits, Thomas and Nam, Sae Woo and Silberhorn, Christine}},
  booktitle    = {{Quantum Photonic Devices}},
  editor       = {{Agio, Mario and Srinivasan, Kartik and Soci, Cesare}},
  isbn         = {{9781510611733}},
  pages        = {{1035809}},
  publisher    = {{SPIE}},
  title        = {{{Towards integrated superconducting detectors on lithium niobate waveguides}}},
  doi          = {{10.1117/12.2273388}},
  volume       = {{10358}},
  year         = {{2017}},
}

@article{13288,
  author       = {{Driben, R. and Konotop, V. V. and Meier, Torsten and Yulin, A. V.}},
  issn         = {{2045-2322}},
  journal      = {{Scientific Reports}},
  number       = {{1}},
  title        = {{{Bloch oscillations sustained by nonlinearity}}},
  doi          = {{10.1038/s41598-017-03400-w}},
  volume       = {{7}},
  year         = {{2017}},
}

@article{13289,
  author       = {{Yulin, A. and Driben, R. and Meier, Torsten}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{3}},
  title        = {{{Bloch oscillations and resonant radiation of light propagating in arrays of nonlinear fibers with high-order dispersion}}},
  doi          = {{10.1103/physreva.96.033827}},
  volume       = {{96}},
  year         = {{2017}},
}