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High Quality Factor Platinum Silicide Microwave Kinetic Inductance Detectors

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Title: High Quality Factor Platinum Silicide Microwave Kinetic Inductance Detectors
Authors: Szypryt, P., Mazin, B. A., Ulbricht, G., Bumble, B., Meeker, S. R., Bockstiegel, C., Walter, A. B.
Publication Year: 2016
Collection: Astrophysics
Physics (Other)
Subject Terms: Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
More Details: We report on the development of Microwave Kinetic Inductance Detectors (MKIDs) using platinum silicide as the sensor material. MKIDs are an emerging superconducting detector technology, capable of measuring the arrival times of single photons to better than two microseconds and their energies to around ten percent. Previously, MKIDs have been fabricated using either sub-stoichiometric titanium nitride or aluminum, but TiN suffers from spatial inhomogeneities in the superconducting critical temperature and Al has a low kinetic inductance fraction, causing low detector sensitivity. To address these issues, we have instead fabricated PtSi microresonators with superconducting critical temperatures of 944$\pm$12~mK and high internal quality factors ($Q_i \gtrsim 10^6$). These devices show typical quasiparticle lifetimes of $\tau_{qp} \approx 30$--$40~\mu$s and spectral resolution, $R = \lambda / \Delta \lambda$, of 8 at 406.6~nm. We compare PtSi MKIDs to those fabricated with TiN and detail the substantial advantages that PtSi MKIDs have to offer.
Comment: 5 pages, 5 figures, accepted by APL
Document Type: Working Paper
DOI: 10.1063/1.4964665
Access URL: http://arxiv.org/abs/1610.00725
Accession Number: edsarx.1610.00725
Database: arXiv
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  Data: <searchLink fieldCode="AR" term="%22Szypryt%2C+P%2E%22">Szypryt, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Mazin%2C+B%2E+A%2E%22">Mazin, B. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Ulbricht%2C+G%2E%22">Ulbricht, G.</searchLink><br /><searchLink fieldCode="AR" term="%22Bumble%2C+B%2E%22">Bumble, B.</searchLink><br /><searchLink fieldCode="AR" term="%22Meeker%2C+S%2E+R%2E%22">Meeker, S. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Bockstiegel%2C+C%2E%22">Bockstiegel, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Walter%2C+A%2E+B%2E%22">Walter, A. B.</searchLink>
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  Data: We report on the development of Microwave Kinetic Inductance Detectors (MKIDs) using platinum silicide as the sensor material. MKIDs are an emerging superconducting detector technology, capable of measuring the arrival times of single photons to better than two microseconds and their energies to around ten percent. Previously, MKIDs have been fabricated using either sub-stoichiometric titanium nitride or aluminum, but TiN suffers from spatial inhomogeneities in the superconducting critical temperature and Al has a low kinetic inductance fraction, causing low detector sensitivity. To address these issues, we have instead fabricated PtSi microresonators with superconducting critical temperatures of 944$\pm$12~mK and high internal quality factors ($Q_i \gtrsim 10^6$). These devices show typical quasiparticle lifetimes of $\tau_{qp} \approx 30$--$40~\mu$s and spectral resolution, $R = \lambda / \Delta \lambda$, of 8 at 406.6~nm. We compare PtSi MKIDs to those fabricated with TiN and detail the substantial advantages that PtSi MKIDs have to offer.<br />Comment: 5 pages, 5 figures, accepted by APL
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      – SubjectFull: Astrophysics - Instrumentation and Methods for Astrophysics
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