Results 1 to 10 of about 3,503,750 (176)

Entanglement, Complementarity, and Vacuum Fields in Spontaneous Parametric Down-Conversion [PDF]

Atoms, 2019
Using two crystals for spontaneous parametric down-conversion in a parallel setup, we observe two-photon interference with high visibility. The high visibility is consistent with complementarity and the absence of which-path information. The observations
Peter W. Milonni, Ralf Menzel, Axel Heuer   +2 more
exaly   +6 more sources

Classical model of spontaneous parametric down-conversion

Physical Review Research, 2022
We model spontaneous parametric down-conversion (SPDC) as classical difference frequency generation (DFG) of the pump field and a hypothetical stochastic “vacuum” seed field.
Girish Kulkarni, Jeremy Rioux, Boris Braverman, Maria V. Chekhova, Robert W. Boyd   +4 more
doaj   +4 more sources

Observation of frequency-uncorrelated photon pairs generated by counter-propagating spontaneous parametric down-conversion. [PDF]

Sci Rep, 2021
We report the generation of frequency-uncorrelated photon pairs from counter-propagating spontaneous parametric down-conversion in a periodically-poled KTP waveguide.
Liu YC, Guo DJ, Ren KQ, Yang R, Shang M, Zhou W, Li X, Sun CW, Xu P, Xie Z, Gong YX, Zhu SN.   +11 more
europepmc   +2 more sources

Towards Terahertz Detection and Calibration Through Spontaneous Parametric Down-Conversion in the Terahertz Idler-Frequency Range Generated by a 795 nm Diode Laser System

APL Photonics, 2018
We study a calibration scheme for terahertz wave nonlinear-optical detectors based on spontaneous parametric down-conversion. Contrary to the usual low wavelength pump in the green, we report here on the observation of spontaneous parametric down ...
Harald G. L. Schwefel, Kitaeva GKh, Vladimir V Kornienko   +2 more
exaly   +2 more sources

Full Characterization of Spontaneous Parametric Down Conversion in Non-Ideal Quarter-Wavelength Semiconductor Bragg Reflection Waveguide

Frontiers in Physics, 2023
Entangled photons are important for testing foundations of quantum physics and are at the heart of quantum technology. Integrated photonics has overwhelming dominance in terms of density and performance, making it a promise route for scalable quantum ...
Liangliang Lu, Tangsheng Chen
exaly   +3 more sources

Spontaneous parametric down conversion without poling for silicon carbide and lithium niobate photonics. [PDF]

Sci Rep
State-of-the-art photon sources based on spontaneous parametric down-conversion (SPDC) currently rely on artificial structuring of the material nonlinearity to satisfy phase-matching conditions. This technique, known as periodic poling, is available only
Weiss TF, Arianfard H, Yang Y, Peruzzo A.   +3 more
europepmc   +2 more sources

Efficient Polarization-Entangled Photon-Pair Generation by a Fiber-In-Line van der Waals Material. [PDF]

Adv Sci (Weinh)
The recent emergence of van der Waals (vdW) materials with exceptional optical nonlinearity has driven advances in next‐generation nonlinear photonic devices beyond classical optics.
Choi J, Ha S, Lim S, Ahn J, Kim J, Yim JH, Park NH, Yoo Y, Lee JU, Park HS, Lee SM, Yeom DI.   +11 more
europepmc   +2 more sources

X-ray parametric down-conversion reveals EUV-polariton. [PDF]

Nat Commun
Spontaneous parametric down-conversion (PDC) of photons is a gateway into the quantum realm – thoroughly studied in nonlinear optics and ubiquitously used to generate non-classical states of light.
Krebs D, Kerker F, Brockmüller X, Sahle CJ, Detlefs B, Huotari S, Rohringer N, Bömer C.   +7 more
europepmc   +2 more sources

Spontaneous Parametric Down-Conversion from GaAs Nanowires at Telecom Wavelength [PDF]

EPJ Web of Conferences, 2022
We report on the generation of photon pairs at 1550 nm from free-standing epitaxially grown self-assisted micrometre long GaAs nanowires. The efficiency of the spontaneous parametric down-conversion process has a rate of 320 GHz/Wm normalized to the ...
Saerens Grégoire, Duong Ngoc My Hanh, Solntsev Alexander S., Karvounis Artemios, Dursap Thomas, Regreny Philippe, Morandi Andrea, Chapman Robert J., Maeder Andreas, Danescu Alexandre, Penuelas José, Chauvin Nicolas, Grange Rachel   +12 more
doaj   +1 more source

General simulation method for spontaneous parametric down- and parametric up-conversion experiments

SciPost Physics Core, 2023
Spontaneous parametric down-conversion (SPDC) sources are an important technology for quantum sensing and imaging. We demonstrate a general simulation method, based on modeling from first principles, reproducing the spectrally and spatially resolved ...
Felix Riexinger, Mirco Kutas, Björn Haase, Patricia Bickert, Daniel Molter, Michael Bortz, Georg von Freymann
doaj   +1 more source