Results 1 to 10 of about 145 (138)
Photonics, 2023 Quantum entanglement will play an important role in future quantum technologies. Here, we theoretically study the steady-state entanglement between a cavity field and a macroscopic rotating mirror in a Laguerre–Gaussian-(LG)-cavity optomechanical system ...
Guilin Lai +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.
Antonin Lukš, Jan Perina, Perina Jan
exaly +3 more sources
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.
Min Xiao, Keyu Xia, Franco Nori
exaly +4 more sources
Cross-Kerr nonlinearity: a stability analysis [PDF]
Mathematics of Quantum Technologies, 2015 AbstractWe analyse the combined effect of the radiation-pressure and cross-Kerr nonlinearity on the stationary solution of the dynamics of a nanomechanical resonator interacting with an electromagnetic cavity. Within this setup,we show how the optical bistability picture induced by the radiation-pressure force is modi fied by the presence of the cross ...
Sarala, Roope, Massel, Francesco
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Cross-Kerr Nonlinearity for Phonon Counting [PDF]
Physical Review Letters, 2017 5 pages, 3 ...
Ding, Shiqian +3 more
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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
doaj +1 more source
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
doaj +1 more source
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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Amplification and cross-Kerr nonlinearity in waveguide quantum electrodynamics [PDF]
Physical Review A, 2020 We explore amplification and cross-Kerr nonlinearity by a three-level emitter (3LE) embedded in a waveguide and driven by two light beams. The coherent amplification and cross-Kerr nonlinearity were demonstrated in recent experiments, respectively, with a V and a ladder-type 3LE coupled to an open superconducting transmission line carrying two ...
Athul Vinu, Dibyendu Roy
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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 ...
Massel Francesco +3 more
openaire +6 more sources