@article{33670,
  author       = {{Schapeler, Timon and Bartley, Tim}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{1}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Information extraction in photon-counting experiments}}},
  doi          = {{10.1103/physreva.106.013701}},
  volume       = {{106}},
  year         = {{2022}},
}

@article{30921,
  abstract     = {{Quantum walks function as essential means to implement quantum simulators, allowing one to study complex and often directly inaccessible quantum processes in controllable systems. In this contribution, the notion of a driven Gaussian quantum walk is introduced. In contrast to typically considered quantum walks in optical settings, we describe the operation of the walk in terms of a nonlinear map rather than a unitary operation, e.g., by replacing a beam-splitter-type coin with a two-mode squeezer, being a process that is controlled and driven by a pump field. This opens previously unattainable possibilities for quantum walks that include nonlinear elements as core components of their operation, vastly extending their range of applications. A full framework for driven Gaussian quantum walks is developed, including methods to dynamically characterize nonlinear, quantum, and quantum-nonlinear effects. Moreover, driven Gaussian quantum walks are compared with their classically interfering and linear counterparts, which are based on classical coherence of light rather than quantum superpositions. In particular, the generation and boost of highly multimode entanglement, squeezing, and other quantum effects are studied over the duration of the nonlinear walk. Importantly, we prove the quantumness of the evolution itself, regardless of the input state. A scheme for an experimental realization is proposed. Furthermore, nonlinear properties of driven Gaussian quantum walks are explored, such as amplification that leads to an ever increasing number of correlated quantum particles, constituting a source of new walkers during the walk. Therefore, a concept for quantum walks is proposed that leads to—and even produces—directly accessible quantum phenomena, and that renders the quantum simulation of nonlinear processes possible.}},
  author       = {{Held, Philip and Engelkemeier, Melanie and De, Syamsundar and Barkhofen, Sonja and Sperling, Jan and Silberhorn, Christine}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{4}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Driven Gaussian quantum walks}}},
  doi          = {{10.1103/physreva.105.042210}},
  volume       = {{105}},
  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{23478,
  author       = {{Rose, Hendrik and Popolitova, D. V. and Tikhonova, O. V. and Meier, Torsten and Sharapova, Polina}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Dark-state and loss-induced phenomena in the quantum-optical regime of Λ-type three-level systems}}},
  doi          = {{10.1103/physreva.103.013702}},
  volume       = {{103}},
  year         = {{2021}},
}

@article{26286,
  author       = {{Prasannan, Nidhin and De, Syamsundar and Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine and Sperling, Jan}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Experimental entanglement characterization of two-rebit states}}},
  doi          = {{10.1103/physreva.103.l040402}},
  volume       = {{103}},
  year         = {{2021}},
}

@article{21022,
  author       = {{Allgaier, M. and Ansari, V. and Donohue, J. M. and Eigner, Christof and Quiring, V. and Ricken, R. and Brecht, Benjamin and Silberhorn, Christine}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Pulse shaping using dispersion-engineered difference frequency generation}}},
  doi          = {{10.1103/physreva.101.043819}},
  volume       = {{101}},
  year         = {{2020}},
}

@article{29526,
  author       = {{van der Meer, R. and Renema, J. J. and Brecht, Benjamin and Silberhorn, Christine and Pinkse, P. W. H.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{6}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Optimizing spontaneous parametric down-conversion sources for boson sampling}}},
  doi          = {{10.1103/physreva.101.063821}},
  volume       = {{101}},
  year         = {{2020}},
}

@article{21023,
  author       = {{Engelkemeier, M. and Lorz, L. and De, Syamsundar and Brecht, Benjamin and Dhand, I. and Plenio, M. B. and Silberhorn, Christine and Sperling, Jan}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Quantum photonics with active feedback loops}}},
  doi          = {{10.1103/physreva.102.023712}},
  volume       = {{102}},
  year         = {{2020}},
}

@article{20772,
  author       = {{Song, Xiaohong and Yang, Shidong and Zuo, Ruixin and Meier, Torsten and Yang, Weifeng}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Enhanced high-order harmonic generation in semiconductors by excitation with multicolor pulses}}},
  doi          = {{10.1103/physreva.101.033410}},
  volume       = {{101}},
  year         = {{2020}},
}

@article{55524,
  author       = {{Burchardt, Adam and Raissi, Zahra}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{2}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Stochastic local operations with classical communication of absolutely maximally entangled states}}},
  doi          = {{10.1103/physreva.102.022413}},
  volume       = {{102}},
  year         = {{2020}},
}

@article{55538,
  author       = {{Burchardt, Adam and Raissi, Zahra}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{2}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Stochastic local operations with classical communication of absolutely maximally entangled states}}},
  doi          = {{10.1103/physreva.102.022413}},
  volume       = {{102}},
  year         = {{2020}},
}

@article{26299,
  author       = {{Phillips, D. S. and Walschaers, M. and Renema, J. J. and Walmsley, I. A. and Treps, N. and Sperling, Jan}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Benchmarking of Gaussian boson sampling using two-point correlators}}},
  doi          = {{10.1103/physreva.99.023836}},
  year         = {{2019}},
}

@article{26501,
  author       = {{Kruse, Regina and Hamilton, Craig S. and Sansoni, Linda and Barkhofen, Sonja and Silberhorn, Christine and Jex, Igor}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Detailed study of Gaussian boson sampling}}},
  doi          = {{10.1103/physreva.100.032326}},
  year         = {{2019}},
}

@article{16113,
  author       = {{Tiedau, Johannes and Bartley, Tim and Harder, Georg and Lita, Adriana E. and Nam, Sae Woo and Gerrits, Thomas and Silberhorn, Christine}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Scalability of parametric down-conversion for generating higher-order Fock states}}},
  doi          = {{10.1103/physreva.100.041802}},
  year         = {{2019}},
}

@article{26296,
  author       = {{Sperling, Jan and Perez-Leija, Armando and Busch, Kurt and Silberhorn, Christine}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Mode-independent quantum entanglement for light}}},
  doi          = {{10.1103/physreva.100.062129}},
  year         = {{2019}},
}

@article{63741,
  author       = {{Thomas, S. E. and Hird, T. M. and Munns, J. H. D. and Brecht, Benjamin and Saunders, D. J. and Nunn, J. and Walmsley, I. A. and Ledingham, P. M.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{3}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Raman quantum memory with built-in suppression of four-wave-mixing noise}}},
  doi          = {{10.1103/physreva.100.033801}},
  volume       = {{100}},
  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{26301,
  author       = {{Sperling, Jan and Walmsley, I. A.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Quasistates and quasiprobabilities}}},
  doi          = {{10.1103/physreva.98.042122}},
  year         = {{2018}},
}

@article{26303,
  author       = {{Sperling, Jan and Walmsley, I. A.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Quasiprobability representation of quantum coherence}}},
  doi          = {{10.1103/physreva.97.062327}},
  year         = {{2018}},
}

@article{26304,
  author       = {{Kovalenko, O. P. and Sperling, Jan and Vogel, W. and Semenov, A. A.}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  title        = {{{Geometrical picture of photocounting measurements}}},
  doi          = {{10.1103/physreva.97.023845}},
  year         = {{2018}},
}