Superconducting single-photon ultrathin NbN film detector

Korneev, A.; Minaeva, Olga; Rubtsova, I.; Milostnaya, I.; Chulkova, G.; Voronov, B.; Смирнов, К. В.; Seleznev, V.; Gol'Tsman, G.; Pearlman, Aaron; Slysz, W.; Cross, A.; Alvarez, Paula; Verevkin, A.; Sobolewski, Roman

doi:10.1070/qe2005v035n08abeh009152

Cited by 3 publications

(4 citation statements)

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“…For example, thin NbN patterns are used to fabricate a hot electron bolometer [11,12]. NbN singlephoton detectors are of special interest for the growing field of quantum cryptography [13]. Finally, owning a rather simple crystal structure, refractory nitrides provide an excellent basis for fundamental studies of the correlations between the crystal structure and the electronic properties as the superconducting transition temperatures [14].…”

Section: Introductionmentioning

confidence: 99%

Ion-beam-assisted deposition of textured NbN thin films

Kidszun¹,

Hühne²,

Holzäpfel³

et al. 2009

Supercond. Sci. Technol.

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Ion-beam-assisted deposition (IBAD) offers the opportunity to prepare thin textured films on non-textured substrates. The approach was used to study if superconducting NbN can be textured in this way. Therefore, a reactive process using pulsed laser deposition of pure Nb in combination with a nitrogen-containing ion beam was utilized for the preparation of textured NbN on amorphous seed layers. It is shown that NbN reveals a textured nucleation similar to IBAD-MgO or IBAD-TiN. The biaxial texture was stabilized in thicker layers using homoepitaxial growth leading to highly textured NbN layers with an in-plane alignment below 5 • . The dependence of the lattice parameter as well as of the superconducting transition temperature T c on the deposition conditions, such as, for example, the N 2 partial pressure during the homoepitaxial growth, was studied in detail. A clear correlation between structural and superconducting properties was found for the deposited NbN thin films. As a result, highly textured NbN layers were prepared showing a T c up to 14 K.

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Section: Introductionmentioning

confidence: 99%

Ion-beam-assisted deposition of textured NbN thin films

Kidszun¹,

Hühne²,

Holzäpfel³

et al. 2009

Supercond. Sci. Technol.

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“…Although a theoretical model for the resistive state formation in SNSPDs is not available, several important aspects of this contribution to the detection efficiency can be investigated experimentally. As expected, a high bias current is critical to achieving a high internal detection efficiency [1-2, 8, 14, 31-33], particularly at long wavelengths (lower energy photons) [14]. The maximum achievable internal detection efficiency increases at lower temperatures [31], likely due in large part to the increased critical current in the nanowires.…”

Section: Internal Detection Efficiencymentioning

confidence: 88%

“…Single photon detectors provide timing information about a digital event -the detection of single quantum of electromagnetic radiation. Superconducting nanowire single photon detectors (SNSPDs), also known as superconducting single photon detectors (SSPDs), [1][2][3][4][5][6][7][8][9][10][11][12] can provide very precise, ~ 30 ps, timing information [8,13] for electromagnetic radiation over a wide range of frequencies -from ultraviolet to middle infrared [14][15]. With the exception of their small active area and cryogenic operating temperatures, SNSPDs are an ideal candidate for many applications [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Superconducting Nanowire Single-Photon Detectors

Berggren

Anant

Baek³

et al. 2011

CLEO:2011 - Laser Applications to Photonic Applications

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Single-photon-detector arrays can provide unparalleled performance and detailed information in applications that require precise timing and single photon sensitivity. Such arrays have been demonstrated using a number of single-photon-detector technologies, but the high performance of superconducting nanowire single photon detectors (SNSPDs) and the unavoidable overhead of cryogenic cooling make SNSPDs particularly likely to be used in applications that require detectors with the highest performance available. These applications are also the most likely to benefit from and fully utilize the large amount of information and performance advantages provided by a single-photon-detector array.Although the performance advantages of individual superconducting nanowire single photon detectors (SNSPDs) have been investigated since their first demonstration in 2001, the advantages gained by building arrays of multiple SNSPDs may be even more unique among single photon detector technologies. First, the simplicity and nanoscale dimensions of these detectors make it possible to easily operate multiple elements and to closely space these elements such that the active area of an array is essentially identical to that of a single element. This ability to eliminate seam-loss between elements, as well as the performance advantages gained by using multiple smaller elements, makes the multi-element approach an attractive way to increase the general detector performance (detection efficiency and maximum counting rate) as well as to provide new capabilities (photon-number, spatial, and spectral resolution). Additionally, in contrast to semiconductor-based single-photon detectors, SNSPDs have a negligible probability of spontaneously emitting photons during the detection process, eliminating a potential source of crosstalk between array elements. However, the SNSPD can be susceptible to other forms of crosstalk, such as thermal or electromagnetic interactions between elements, so it was important to investigate the operation and limitations of multi-element SNSPDs. This thesis will introduce the concept of a multi-element SNSPD with a continuous active area and will investigate its performance advantages, its potential drawbacks and finally its application to intensity correlation measurements.

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Section: Chapter Introductionmentioning

confidence: 99%

Superconducting Nanowire Single-Photon Detectors

Kerman

Barron

Caplan

et al.

2006 Digest of the LEOS Summer Topical Meetings

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Single-photon-detector arrays can provide unparalleled performance and detailed information in applications that require precise timing and single photon sensitivity. Such arrays have been demonstrated using a number of single-photon-detector technologies, but the high performance of superconducting nanowire single photon detectors (SNSPDs) and the unavoidable overhead of cryogenic cooling make SNSPDs particularly likely to be used in applications that require detectors with the highest performance available. These applications are also the most likely to benefit from and fully utilize the large amount of information and performance advantages provided by a single-photon-detector array. Although the performance advantages of individual superconducting nanowire single photon detectors (SNSPDs) have been investigated since their first demonstration in 2001, the advantages gained by building arrays of multiple SNSPDs may be even more unique among single photon detector technologies. First, the simplicity and nanoscale dimensions of these detectors make it possible to easily operate multiple elements and to closely space these elements such that the active area of an array is essentially identical to that of a single element. This ability to eliminate seam-loss between elements, as well as the performance advantages gained by using multiple smaller elements, makes the multi-element approach an attractive way to increase the general detector performance (detection efficiency and maximum counting rate) as well as to provide new capabilities (photon-number, spatial, and spectral resolution). Additionally, in contrast to semiconductor-based single-photon detectors, SNSPDs have a negligible probability of spontaneously emitting photons during the detection process, eliminating a potential source of crosstalk between array elements. However, the SNSPD can be susceptible to other forms of crosstalk, such as thermal or electromagnetic interactions between elements, so it was important to investigate the operation and limitations of multi-element SNSPDs. This thesis will introduce the concept of a multi-element SNSPD with a continuous active area and will investigate its performance advantages, its potential drawbacks and finally its application to intensity correlation measurements.

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Superconducting single-photon ultrathin NbN film detector

Cited by 3 publications

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Ion-beam-assisted deposition of textured NbN thin films

Ion-beam-assisted deposition of textured NbN thin films

Superconducting Nanowire Single-Photon Detectors

Superconducting Nanowire Single-Photon Detectors

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