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Cryogenic Measurement Set-Up for Characterization of Superconducting Nano Structures for Single-Photon Detection Applications


Affiliations
1 Academy of Scientific and Innovative Research, CSIR-NPL Campus, Dr K. S. Krishnan Marg, New Delhi 110 012, India
2 Microelectronics Research Lab, Department of Engineering Physics, Delhi Technological University, Bawana Road, Delhi 110 042, India
 

We discuss the design and development of a cryogenic set-up down to ~1.8 K for carrying out measurements on superconducting nanowire single-photon detectors. The set-up consists of two separate low-temperature inserts, one for electrical characterization and the other for optical measurements and characterization of single-photon detectors. A sample holder with necessary arrangements for precise alignment of laser light with the active area of the device to enhance optical coupling efficiency has been designed for the optical probe. The invar alloy has been used for the sample holder to ensure that the alignment is not disturbed at low temperature. Single-mode fibres due to their high transmission rate, minimum attenuation and least distortion have been used to shine light on the samples. The sample holder with 20-pin LCC socket and matching chip carrier provides convenient and fast sample mounting in the electrical insert. Mumetal has been employed to cover the sample space in both the inserts in order to attenuate any electromagnetic interference. Temperature stability with the passage of time has been monitored. It has been found that variation in temperature is less than 10 mK at the lowest operating temperature. Another important advantage of the system is its low enough liquid helium loss rate (~100 ml/h) with all inserts, which allows uninterrupted measurements for several days without any refilling of liquid helium.

Keywords

Device Packaging, Optical Alignment, Liquid Helium Cryostat, Low Temperature Measurement Probe.
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  • Yin, J. et al., Quantum teleportation and entanglement distribution over 100-kilometre free-space channels. Nature, 2012, 488, 185–188.

  • Xiao-Song Ma, X.-S. et al., Quantum teleportation over 143 kilometres using active feed-forward. Nature, 2012, 489, 269–273.

  • Takesue, H., Dyer, S. D., Stevens, M. J., Verma, V., Mirin, R. P. and Nam, S. W., Quantum teleportation over 100 km of fiber using highly efficient superconducting nanowire single-photon detectors. Optica, 2015, 2, 832–835.

  • Hadfield, R. H., Single-photon detectors for optical quantum information applications. Nature Photonics, 2009, 3, 696–705, and references therein.

  • Wang, S. et al., 2 GHz clock quantum key distribution over 260 km of standard telecom fiber. Opt. Lett., 2012, 37, 1008–1010.

  • Yao, X.-C. et al., Experimental demonstration of topological error correction. Nature, 2012, 482, 489–494.

  • Shimizu, K. et al., Performance of long-distance quantum key distribution over 90-km optical links installed in a field environment of Tokyo metropolitan area. J. Lightwave Technol., 2014, 32, 141– 151.

  • Northup, T. E. and Blatt, R., Quantum information transfer using photons. Nature Photonics, 2014, 8, 356–363.

  • Korzh, B. et al., Provably secure and practical quantum key distribution over 307 km of optical fibre. Nature Photonics, 2014, 9, 163–168.

  • Yuana, Z. L., Dynes, J. F. and Shields, A. J., Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography. Appl. Phys. Lett., 2011, 98, 231104(1–3).

  • Itzler, M. A. et al., Advances in InGaAsP-based avalanche diode single photon detectors. J. Mod. Opt., 2011, 58, 174–200.

  • Gol’tsman, G. N. et al., Picosecond superconducting singlephoton optical detector. Appl. Phys. Lett., 2001, 79, 705–707.

  • Eisaman, M. D., Fan, J., Migdal, A. and Polyakov, S. V., Invited review article: Single-photon sources and detectors. Rev. Sci. Instrum., 2011, 82, 071101(1–25), and references therein.

  • Natarajan, C. M., Tanner, M. G. and Hadfield, R. H., Superconducting nanowire single-photon detectors: physics and applications. Supercond. Sci. Technol., 2012, 25, 063001(1–16), and references therein.

  • Lita, A. E., Miller, A. J. and Nam, S. W., Counting near-infrared single-photons with 95% efficiency. Opt. Express, 2008, 16, 3032–3040.

  • Miki, S. et al., Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates. Appl. Phys. Lett., 2008, 92, 061116(1–3).

  • Korneev, A. et al., Recent nanowire superconducting singlephoton detector optimization for practical applications. IEEE Trans. Appl. Supercond., 2013, 23, 2201204(1–4).

  • Salim, A. J., Eftekharian, A. and Majedi, A. H., High quantum efficiency and low dark count rate in multi-layer superconducting nanowire single-photon detectors. J. Appl. Phys., 2014, 115, 054514(1–4).

  • Akhlaghi, M. K., Atikian, H., Eftekharian, A., Loncar, M. and Majedi, A. H., Reduced Dark Counts in Optimized Geometries for Superconducting Nanowire Single Photon Detectors. Opt. Express, 2012, 20, 23610–23616.

  • Orgiazzi, J.-L. F.-X. and Majedi, A. H., Robust packaging technique and characterization of fiber-pigtailed superconducting NbN nanowire single photon detectors. IEEE Trans. Appl. Supercond., 2009, 19, 341–345.


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  • Cryogenic Measurement Set-Up for Characterization of Superconducting Nano Structures for Single-Photon Detection Applications

Abstract Views: 434  |  PDF Views: 122

Authors

Manju Singh
Academy of Scientific and Innovative Research, CSIR-NPL Campus, Dr K. S. Krishnan Marg, New Delhi 110 012, India
Rishu Chaujar
Microelectronics Research Lab, Department of Engineering Physics, Delhi Technological University, Bawana Road, Delhi 110 042, India
R. K. Rakshit
Academy of Scientific and Innovative Research, CSIR-NPL Campus, Dr K. S. Krishnan Marg, New Delhi 110 012, India

Abstract


We discuss the design and development of a cryogenic set-up down to ~1.8 K for carrying out measurements on superconducting nanowire single-photon detectors. The set-up consists of two separate low-temperature inserts, one for electrical characterization and the other for optical measurements and characterization of single-photon detectors. A sample holder with necessary arrangements for precise alignment of laser light with the active area of the device to enhance optical coupling efficiency has been designed for the optical probe. The invar alloy has been used for the sample holder to ensure that the alignment is not disturbed at low temperature. Single-mode fibres due to their high transmission rate, minimum attenuation and least distortion have been used to shine light on the samples. The sample holder with 20-pin LCC socket and matching chip carrier provides convenient and fast sample mounting in the electrical insert. Mumetal has been employed to cover the sample space in both the inserts in order to attenuate any electromagnetic interference. Temperature stability with the passage of time has been monitored. It has been found that variation in temperature is less than 10 mK at the lowest operating temperature. Another important advantage of the system is its low enough liquid helium loss rate (~100 ml/h) with all inserts, which allows uninterrupted measurements for several days without any refilling of liquid helium.

Keywords


Device Packaging, Optical Alignment, Liquid Helium Cryostat, Low Temperature Measurement Probe.

References





DOI: https://doi.org/10.18520/cs%2Fv115%2Fi6%2F1085-1090