Characterizing the attenuation of coaxial and rectangular microwave-frequency waveguides at cryogenic temperatures
Low-loss waveguides are required for quantum communication at distances beyond the chip-scale for any low-temperature solid-state implementation of quantum information processors. We measure and analyze the attenuation constant of commercially available microwave-frequency waveguides down to millike...
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description | Low-loss waveguides are required for quantum communication at distances beyond the chip-scale for any low-temperature solid-state implementation of quantum information processors. We measure and analyze the attenuation constant of commercially available microwave-frequency waveguides down to millikelvin temperatures and single photon levels. More specifically, we characterize the frequency-dependent loss of a range of coaxial and rectangular microwave waveguides down to \(0.005\,\rm{dB}/\rm{m}\) using a resonant-cavity technique. We study the loss tangent and relative permittivity of commonly used dielectric waveguide materials by measurements of the internal quality factors and their comparison with established loss models. The results of our characterization are relevant for accurately predicting the signal levels at the input of cryogenic devices, for reducing the loss in any detection chain, and for estimating the heat load induced by signal dissipation in cryogenic systems. |
doi_str_mv | 10.48550/arxiv.1612.07977 |
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We measure and analyze the attenuation constant of commercially available microwave-frequency waveguides down to millikelvin temperatures and single photon levels. More specifically, we characterize the frequency-dependent loss of a range of coaxial and rectangular microwave waveguides down to \(0.005\,\rm{dB}/\rm{m}\) using a resonant-cavity technique. We study the loss tangent and relative permittivity of commonly used dielectric waveguide materials by measurements of the internal quality factors and their comparison with established loss models. The results of our characterization are relevant for accurately predicting the signal levels at the input of cryogenic devices, for reducing the loss in any detection chain, and for estimating the heat load induced by signal dissipation in cryogenic systems.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1612.07977</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Cryogenic temperature ; Dielectric waveguides ; Microwave attenuation ; Permittivity ; Physics - Mesoscale and Nanoscale Physics ; Physics - Quantum Physics ; Physics - Superconductivity ; Quantum phenomena ; Quantum theory ; Wave attenuation</subject><ispartof>arXiv.org, 2016-12</ispartof><rights>2016. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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We measure and analyze the attenuation constant of commercially available microwave-frequency waveguides down to millikelvin temperatures and single photon levels. More specifically, we characterize the frequency-dependent loss of a range of coaxial and rectangular microwave waveguides down to \(0.005\,\rm{dB}/\rm{m}\) using a resonant-cavity technique. We study the loss tangent and relative permittivity of commonly used dielectric waveguide materials by measurements of the internal quality factors and their comparison with established loss models. The results of our characterization are relevant for accurately predicting the signal levels at the input of cryogenic devices, for reducing the loss in any detection chain, and for estimating the heat load induced by signal dissipation in cryogenic systems.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1612.07977</doi><oa>free_for_read</oa></addata></record> |
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subjects | Cryogenic temperature Dielectric waveguides Microwave attenuation Permittivity Physics - Mesoscale and Nanoscale Physics Physics - Quantum Physics Physics - Superconductivity Quantum phenomena Quantum theory Wave attenuation |
title | Characterizing the attenuation of coaxial and rectangular microwave-frequency waveguides at cryogenic temperatures |
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