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  High-bandwidth squeezed light at 1550 nm from a compact monolithic PPKTP cavity

Ast, S., Mehmet, M., & Schnabel, R. (2013). High-bandwidth squeezed light at 1550 nm from a compact monolithic PPKTP cavity. Optics Express, 21(11), 13572-13579. doi:10.1364/OE.21.013572.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-A9D7-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-A9D8-C
Genre: Journal Article

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1303.1925.pdf (Preprint), 397KB
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 Creators:
Ast, Stefan1, Author              
Mehmet, Moritz1, Author              
Schnabel, Roman1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24010              

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Free keywords: Quantum Physics, quant-ph
 Abstract: We report the generation of squeezed vacuum states of light at 1550 nm with a broadband quantum noise reduction of up to 4.8 dB ranging from 5 MHz to 1.2 GHz sideband frequency. We used a custom-designed 2.6 mm long biconvex periodically-poled potassium titanyl phosphate (PPKTP) crystal. It featured reflectively coated end surfaces, 2.26 GHz of linewidth and generated the squeezing via optical parametric amplification. Two homodyne detectors with different quantum efficiencies and bandwidths were used to characterize the non-classical noise suppression. We measured squeezing values of up to 4.8 dB from 5 to 100 MHz and up to 3 dB from 100 MHz to 1.2 GHz. The squeezed vacuum measurements were limited by detection loss. We propose an improved detection scheme to measure up to 10 dB squeezing over 1 GHz. Our results of GHz bandwidth squeezed light generation provide new prospects for high-speed quantum key distribution.

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 Dates: 2013-03-082013-05-302013
 Publication Status: Published in print
 Pages: 8 pages, 4 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1303.1925
DOI: 10.1364/OE.21.013572
URI: http://arxiv.org/abs/1303.1925
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Title: Optics Express
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 21 (11) Sequence Number: - Start / End Page: 13572 - 13579 Identifier: ISSN: 1094-4087
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925609918