Direct generation of genuine single-longitudinal-mode narrowband photon pairs
The practical prospect of quantum communication and information processing relies on sophisticated single-photon pairs, which feature a controllable waveform, narrow spectrum, excellent purity, fiber compatibility, and miniaturized design. For practical realizations, stable, miniaturized, low-cost d...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/7/073039 |
| _version_ | 1797751139528081408 |
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| author | Kai-Hong Luo Harald Herrmann Stephan Krapick Benjamin Brecht Raimund Ricken Viktor Quiring Hubertus Suche Wolfgang Sohler Christine Silberhorn |
| author_facet | Kai-Hong Luo Harald Herrmann Stephan Krapick Benjamin Brecht Raimund Ricken Viktor Quiring Hubertus Suche Wolfgang Sohler Christine Silberhorn |
| author_sort | Kai-Hong Luo |
| collection | DOAJ |
| description | The practical prospect of quantum communication and information processing relies on sophisticated single-photon pairs, which feature a controllable waveform, narrow spectrum, excellent purity, fiber compatibility, and miniaturized design. For practical realizations, stable, miniaturized, low-cost devices are required. Sources with one or some of the above characteristics have already been demonstrated, but it is quite challenging to obtain a source with all of the described characteristics simultaneously. Here we report on an integrated single-longitudinal-mode, non-degenerate, narrowband photon pair source that exhibits all the requirements needed for quantum applications. The device is composed of a periodically poled, Ti-indiffused, lithium niobate waveguide with high reflective dielectric mirror coatings deposited on the waveguide end-faces. Photon pairs with wavelengths around 890 and 1320 nm are generated via type II phase-matched parametric down-conversion (PDC). Clustering in this dispersive cavity restricts the whole conversion spectrum to one single-longitudinal mode in a single cluster, yielding a narrow bandwidth of only 60 MHz. The high conversion efficiency in the waveguide, together with the spectral clustering in the doubly resonant waveguide, leads to a high brightness of $3\times {10}^{4}$ pairs/(s mW MHz). This source exhibits prominent single-longitudinal-mode purity and remarkable temporal shaping capability. In particular, due to temporal broadening, we can observe that the coherence time of the two-photon component of the PDC state is actually longer than that of the single-photon states. The miniaturized monolithic design enables this source to have various fiber communication applications. |
| first_indexed | 2024-03-12T16:44:07Z |
| format | Article |
| id | doaj.art-070402330c234e259eb6d309b359d6a0 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:44:07Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-070402330c234e259eb6d309b359d6a02023-08-08T14:19:06ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117707303910.1088/1367-2630/17/7/073039Direct generation of genuine single-longitudinal-mode narrowband photon pairsKai-Hong Luo0Harald Herrmann1Stephan Krapick2Benjamin Brecht3Raimund Ricken4Viktor Quiring5Hubertus Suche6Wolfgang Sohler7Christine Silberhorn8Integrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyIntegrated Quantum Optics, Applied Physics, University of Paderborn, Warburger Str. 100, 33098, Paderborn, GermanyThe practical prospect of quantum communication and information processing relies on sophisticated single-photon pairs, which feature a controllable waveform, narrow spectrum, excellent purity, fiber compatibility, and miniaturized design. For practical realizations, stable, miniaturized, low-cost devices are required. Sources with one or some of the above characteristics have already been demonstrated, but it is quite challenging to obtain a source with all of the described characteristics simultaneously. Here we report on an integrated single-longitudinal-mode, non-degenerate, narrowband photon pair source that exhibits all the requirements needed for quantum applications. The device is composed of a periodically poled, Ti-indiffused, lithium niobate waveguide with high reflective dielectric mirror coatings deposited on the waveguide end-faces. Photon pairs with wavelengths around 890 and 1320 nm are generated via type II phase-matched parametric down-conversion (PDC). Clustering in this dispersive cavity restricts the whole conversion spectrum to one single-longitudinal mode in a single cluster, yielding a narrow bandwidth of only 60 MHz. The high conversion efficiency in the waveguide, together with the spectral clustering in the doubly resonant waveguide, leads to a high brightness of $3\times {10}^{4}$ pairs/(s mW MHz). This source exhibits prominent single-longitudinal-mode purity and remarkable temporal shaping capability. In particular, due to temporal broadening, we can observe that the coherence time of the two-photon component of the PDC state is actually longer than that of the single-photon states. The miniaturized monolithic design enables this source to have various fiber communication applications.https://doi.org/10.1088/1367-2630/17/7/073039integrated quantum opticsnarrowband photon sourcenonlinear waveguides |
| spellingShingle | Kai-Hong Luo Harald Herrmann Stephan Krapick Benjamin Brecht Raimund Ricken Viktor Quiring Hubertus Suche Wolfgang Sohler Christine Silberhorn Direct generation of genuine single-longitudinal-mode narrowband photon pairs New Journal of Physics integrated quantum optics narrowband photon source nonlinear waveguides |
| title | Direct generation of genuine single-longitudinal-mode narrowband photon pairs |
| title_full | Direct generation of genuine single-longitudinal-mode narrowband photon pairs |
| title_fullStr | Direct generation of genuine single-longitudinal-mode narrowband photon pairs |
| title_full_unstemmed | Direct generation of genuine single-longitudinal-mode narrowband photon pairs |
| title_short | Direct generation of genuine single-longitudinal-mode narrowband photon pairs |
| title_sort | direct generation of genuine single longitudinal mode narrowband photon pairs |
| topic | integrated quantum optics narrowband photon source nonlinear waveguides |
| url | https://doi.org/10.1088/1367-2630/17/7/073039 |
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