Cross-Kerr Nonlinearity for Phonon Counting [PDF]
Physical Review Letters, 2017 5 pages, 3 ...
Ding, Shiqian +3 more
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Quantum Behavior of a PT -Symmetric Two-Mode System with Cross-Kerr Nonlinearity [PDF]
Symmetry, 2019 Quantum behavior of two oscillator modes, with mutually balanced gain and loss and coupled via linear coupling (including energy conserving as well as energy non-conserving terms) and nonlinear cross-Kerr effect, is investigated. Stationary states are found and their stability analysis is given.
Jan Peřina, Antonín Lukš
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Cavity-Free Optical Isolators and Circulators Using a Chiral Cross-Kerr Nonlinearity
Physical Review Letters, 2018 Optical nonlinearity has been widely used to try to produce optical isolators. However, this is very difficult to achieve due to dynamical reciprocity. Here, we show the use of the chiral cross-Kerr nonlinearity of atoms at room temperature to realize optical isolation, circumventing dynamical reciprocity.
Keyu, Xia, Franco, Nori, Min, Xiao
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Polychromatic Kerr nonlinearity within electromagnetically induced transparency window
Results in Physics, 2021 We study the nonlinear effect in a three-level atomic system in Λ configuration. As two or more fields are confined within the common electromagnetically induced transparency (EIT) window, they directly disturb EIT dark state at the same time, which ...
Guang-Hui Wang +5 more
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Entanglement-Based Single-Photon Amplification With High Fidelity of Polarization Feature
IEEE Photonics Journal, 2022 The amplification protocol of single-photon is an effective method to overcome the photon loss in the practical quantum communication. Here, we propose an entanglement-based single-photon amplification to nearly eliminate the vacuum state resulting from ...
Ruitong Zhao +2 more
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Passive CPHASE Gate via Cross-Kerr Nonlinearities [PDF]
Physical Review Letters, 2016 A fundamental and open question is whether cross-Kerr nonlinearities can be used to construct a controlled-phase (CPHASE) gate. Here we propose a gate constructed from a discrete set of atom-mediated cross-Kerr interaction sites with counter-propagating photons. We show that the average gate fidelity $F$ between a CPHASE and our proposed gate increases
Brod, Daniel J., Combes, Joshua
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Cross-Kerr nonlinearity in optomechanical systems [PDF]
Physical Review A, 2015 We consider the response of a nanomechanical resonator interacting with an electromagnetic cavity via a radiation pressure coupling and a cross-Kerr coupling. Using a mean field approach we solve the dynamics of the system, and show the different corrections coming from the radiation pressure and the cross-Kerr effect to the usually considered ...
Khan, R., Massel, F., Heikkilä, T.T.
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Electromagnetically Induced Transparency in Media with Rydberg Excitons 2: Cross-Kerr Modulation
Entropy, 2020 By mapping photons into the sample of cuprous oxide with Rydberg excitons, it is possible to obtain a significant optical phase shift due to third-order cross-Kerr nonlinearities realized under the conditions of electromagnetically induced transparency ...
David Ziemkiewicz +1 more
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Complete hyperentangled state analysis using weak cross-Kerr nonlinearity and auxiliary entanglement
New Journal of Physics, 2020 We present a new method for the complete analysis of hyperentangled Bell state and Greenberger–Horne–Zeilinger state in polarization and spatial-mode degrees of freedom, resorting to weak cross-Kerr nonlinearity and auxiliary frequency entanglement.
Zhi Zeng, Ka-Di Zhu
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Quantum control gates with weak cross-Kerr nonlinearity [PDF]
Physical Review A, 2009 In this paper, with the weak cross-Kerr nonlinearity, we first present a special experimental scheme called C-path gate with which the realization of all possible bipartite POVMs of two-photon polarization states can be simpler and nearly deterministic.
Lin, Qing, Li, Jian
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