Results 161 to 170 of about 13,197 (190)

Decoherence-induced cross-Kerr nonlinearity for quantum entanglement

Laser Physics Letters
Abstract In this paper, we show that the cross-Kerr nonlinearity is induced by the ground-state decoherence in a Λ system even under the exact one- and two-photon resonance conditions, which is attributed to the fact that the dark-state resonance is broken slightly.
Zhicai Chen, Fei Wang
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Polarization-entanglement purification and concentration using cross-Kerr nonlinearity

Quantum Information and Computation, 2011
We present an entanglement purification protocol and an entanglement concentration protocol in this paper, resorting to cross-Kerr nonlinearities and interference of two coherent beams. Our purification protocol can be used to purify photon pairs not only from an ideal entangled source but also from a parametric down-conversion source by the ...
Chuan Wang, Yong Zhang, Guang-Sheng Jin
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Cross-Kerr nonlinearities in an optically dressed periodic medium

Physica Scripta, 2011
Cross-Kerr nonlinearities are analyzed for two light beams propagating in an atomic medium in the tripod configuration, dressed by a strong standing-wave laser field that induces periodic optical properties. The reflection and transmission spectra as well as the phases of both the reflected and transmitted components of the two beams are analyzed ...
Slowik K, Raczynski A, Zaremba J, Zielinska Kaniasty S, Artoni M, LA ROCCA, Giuseppe Carlo   +5 more
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Generation of Multiple-Atom Entangled States with Weak Cross-Kerr Nonlinearity

International Journal of Theoretical Physics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiong, Wei, Ye, Liu
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Effective scheme for $$W$$ W -state fusion with weak cross-Kerr nonlinearities

Quantum Information Processing, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Han, Xue, Hu, Shi, Guo, Qi, Wang, Hong-Fu, Zhang, Shou   +4 more
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Splitting Single-Photon Polarization State with Weak Cross—Kerr Nonlinearity

Communications in Theoretical Physics, 2014
We propose a three-party scheme for quantum information splitting (QIS) of an arbitrary single-photon polarization state based on weak cross-Kerr nonlinearity combined with linear optics elements such as polarization beam splitters (PBSs) and half wave plates (HWPs). The scheme is generalized to the arbitrary-party case.
Pin-Shu Rui, Kuang-Wei Xiong, Wen Zhang, Zi-Yun Zhang   +3 more
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Nearly deterministic Fredkin gate based on weak cross-Kerr nonlinearities

Journal of the Optical Society of America B, 2016
A Fredkin gate is an indispensable logic gate for the applications of the scalable quantum network. Weak cross-Kerr nonlinearities serve as the intermediary between photons and coherent states and thus provide the indirect interaction between photons. By means of weak cross-Kerr nonlinearities, we propose a construction scheme of a nearly deterministic
Li Dong, Yan-Fang Lin, Jun-Xi Wang, Qing-Yang Li, Hong-Zhi Shen, Hai-Kuan Dong, Yuan-Peng Ren, Xiao-Ming Xiu, Ya-Jun Gao, Choo Hiap Oh   +9 more
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Nearly deterministic controlled-NOT gate with weak cross-Kerr nonlinearities

Quantum Information and Computation, 2012
On the basis of the probe coherent state and weak cross-Kerr nonlinearities, we present a scheme of a nearly deterministic Controlled-NOT gate. In this construction, feed-forward methods, quantum nondemolition detectors and several optical elements are applied. It is a potentially practical quantum gate with certain features.
Xiu, Xiao-Ming, Dong, Li, Gao, Ya-Jun, Yi, Xue Xi   +3 more
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Simplified optical quantum-information processing via weak cross-Kerr nonlinearities

Physical Review A, 2011
We propose a simplified parity meter for photonic qubits with cross-Kerr nonlinearities, homodyne measurement, and some optical elements. Our scheme has lower error probability than the protocol proposed in Nemoto and Munro [Phys. Rev. Lett. 93, 250502 (2004)].
Qi Guo, Juan Bai, Liu-Yong Cheng, Xiao-Qiang Shao, Hong-Fu Wang, Shou Zhang   +5 more
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Nonlinear cross-Kerr quasiclassical dynamics

2014
We study the quasiclassical dynamics of the cross-Kerr effect. In this approximation, the typical periodical revivals of the decorrelation between the two polarization modes disappear and remain entangled. By mapping the dynamics onto the Poincaré space, we find simple conditions for polarization squeezing.
Rigas, Ioannes, Klimov, A. B., Sánchez-Soto, L. L., Leuchs, Gerd   +3 more
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