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http://dx.doi.org/10.3807/KJOP.2021.32.1.029

Simulation of Leggett-Garg Inequalities Using a Heralded-single-photon Source  

Kim, Su Hyun (Department of Physics, Pusan National University)
Moon, Han Seb (Department of Physics, Pusan National University)
Publication Information
Korean Journal of Optics and Photonics / v.32, no.1, 2021 , pp. 29-33 More about this Journal
Abstract
We have experimentally simulated the violation of the Leggett-Garg inequality (LGI) using a heralded-single-photon source via spontaneous parametric down-conversion (SPDC) in a periodically poled potassium titanyl phosphate (PPKTP) crystal. We measured the polarization fringe as a function of the angle of the linear polarization of the photons, and analyzed the LGI according to n measurement. Simulation results for LGI based on the polarization of the heralded single photon were in good agreement with theoretical calculations.
Keywords
Quantum optics; Spontaneous parametric down conversion (SPDC); Leggett-Garg inequality (LGI);
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1 A. Einstein, B. Podolsky, and N. Rosen, "Can quantum-mechanical description of physical reality be considered complete?" Phys. Rev. 47, 777-780 (1935).   DOI
2 J. S. Bell, "On the Einstein Podolsky Rosen paradox," Physics 1, 195-200 (1964).   DOI
3 W. Rosenfeld, D. Burchardt, R. Garthoff, K. Redeker, N. Ortegel, M. Rau, and H. Weinfurter, "Event-ready Bell test using entangled atoms simultaneously closing detection and locality loopholes," Phys. Rev. Lett. 119, 010402 (2017).   DOI
4 J. Park, H. Kim, and H. S. Moon, "Polarization-entangled photons from a warm atomic ensemble using a Sagnac interferometer," Phys. Rev. Lett. 122, 143601 (2019).   DOI
5 E. Schrodinger, "Die gegenwartige Situation in der Quantenmechanik," Naturwissenschaften 23, 823-828 (1935).   DOI
6 A. J. Leggett and A. Garg, "Quantum mechanics versus macroscopic realism: is the flux there when nobody looks?" Phys. Rev. Lett. 54, 857-860 (1985).   DOI
7 R. F. Werner, "Quantum states with Einstein-Podolsky-Rosen correlations admitting a hidden-variable model," Phys. Rev. A 40, 4277-4281 (1989).   DOI
8 M. E. Goggin, M. P. Almeida, M. Barbieri, B. P. Lanyon, J. L. O'Brien, A. G. White, and G. J. Pryde, "Violation of the Leggett-Garg inequality with weak measurements of photons," Proc. Natl. Acad. Sci. U.S.A. 108, 1256-1261 (2011).   DOI
9 C. Emary, N. Lambert, and F. Nori, "Leggett-Garg inequalities," Rep. Prog. Phys. 77, 016001 (2014).   DOI
10 Y. Aharonov and L. Vaidman, "Properties of a quantum system during the time interval between two measurements," Phys. Rev. A 41, 11-20 (1990).   DOI