Academic literature on the topic 'Biphoton state'

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Journal articles on the topic "Biphoton state"

1

Frolovtsev, Dmitry N., Sergey A. Magnitskiy, and Andrey V. Demin. "Quantum tomograph for measurement and characterization of quantum states of biphoton sources." Izmeritel`naya Tekhnika, no. 4 (April 2020): 20–26. http://dx.doi.org/10.32446/0368-1025it.2020-4-20-26.

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The method and prototype of a device for characterizing of biphoton light sources based on spontaneous parametric downdonversion by quantum tomography are described. The prototype is an experimental implementation of a specialized quantum tomograph designed to measure the quantum polarization states of radiation generated by biphoton sources. Specially developed software will determine the statistical characteristics of the measured quantum state, calculate the tomographic and likelihood estimations of the density matrix, calculate the measurement errors of the density matrix elements and eval
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2

Wong, Y.-E., N.-Y. Tsai, W. S. Hiew, and H. H. Jen. "Spectral compression and entanglement reduction in the cascaded biphoton state with cavities." Journal of Physics B: Atomic, Molecular and Optical Physics 54, no. 19 (2021): 195501. http://dx.doi.org/10.1088/1361-6455/ac31c7.

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Abstract The cascaded biphoton state generated from a cold atomic ensemble presents one of the strongly correlated resources that can preserve and relay quantum information. Under the four-wave mixing condition, the emitted signal and idler photons from the upper and lower excited states become highly correlated in their traveling directions and entangled in continuous frequency spaces. In this system, we theoretically study the spectral compression of the biphoton source using an external cavity and show the reduction in its frequency entanglement entropy. This indicates, respectively, an imp
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3

Fedorov, M. V. "State entanglement of biphoton qutrits and ququarts." Bulletin of the Russian Academy of Sciences: Physics 76, no. 3 (2012): 233–36. http://dx.doi.org/10.3103/s1062873812030082.

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4

Burlakov, A. V., M. V. Chekhova, O. A. Karabutova, D. N. Klyshko, and S. P. Kulik. "Polarization state of a biphoton: Quantum ternary logic." Physical Review A 60, no. 6 (1999): R4209—R4212. http://dx.doi.org/10.1103/physreva.60.r4209.

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5

Tian, Ying, Wu-Hao Cai, Zi-Xiang Yang, Feng Chen, Rui-Bo Jin, and Qiang Zhou. "Hong-Ou-Mandel interference of entangled photons generated under pump-tight-focusing condition." Acta Physica Sinica 71, no. 5 (2022): 054201. http://dx.doi.org/10.7498/aps.71.20211783.

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Hong-Ou-Mandel (HOM) interference is a non-classical effect of photons and plays an important role in quantum optics. The <i>β</i>-barium borate (BBO) has a high nonlinear efficiency, and is commonly used to generate biphoton states, thereby exhibiting HOM interference. However, in previous experiments, researchers often used band-pass filters, so the resulting spectrum was directly determined by the band-pass filter. As a result, the original spectrum of the BBO crystal, especially the spectrum under tight focusing, was lack of systematic research. In this paper, the biphoton spec
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6

Lin, Qing. "Bidirectional Mapping between a Biphoton Polarization State and a Single-Photon Two-Qubit State." Chinese Physics Letters 27, no. 12 (2010): 120302. http://dx.doi.org/10.1088/0256-307x/27/12/120302.

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7

Chang, T. H., G.-D. Lin, and H. H. Jen. "Spectral shaping of the biphoton state from multiplexed thermal atomic ensembles." Journal of Physics B: Atomic, Molecular and Optical Physics 53, no. 8 (2020): 085403. http://dx.doi.org/10.1088/1361-6455/ab7556.

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8

Kojima, Jun, та Quang-Viet Nguyen. "Entangled biphoton virtual-state spectroscopy of the A2Σ+–X2Π system of OH". Chemical Physics Letters 396, № 4-6 (2004): 323–28. http://dx.doi.org/10.1016/j.cplett.2004.08.051.

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9

Jeong, Heejeong, Shengwang Du, and Na Young Kim. "Proposed narrowband biphoton generation from an ensemble of solid-state quantum emitters." Journal of the Optical Society of America B 36, no. 3 (2019): 646. http://dx.doi.org/10.1364/josab.36.000646.

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10

Chang, T. H., G.-D. Lin, and H. H. Jen. "Spectrally entangled biphoton state of cascade emissions from a Doppler-broadened atomic ensemble." Journal of Physics B: Atomic, Molecular and Optical Physics 52, no. 13 (2019): 135501. http://dx.doi.org/10.1088/1361-6455/ab1303.

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