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APS » Journals » Phys. Rev. A » Volume 78 » Issue 5
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Phys. Rev. A 78, 053826 (2008) [4 pages]

Measuring intensity correlations with a two-element superconducting nanowire single-photon detector

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Eric A. Dauler1,2, Martin J. Stevens3, Burm Baek3, Richard J. Molnar2, Scott A. Hamilton2, Richard P. Mirin3, Sae Woo Nam3, and Karl K. Berggren1
1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420, USA
3National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA

Received 12 May 2008; published 24 November 2008

Second-order intensity correlation measurements were made using a two-element superconducting nanowire single photon detector (SNSPD) without the need for an optical beam splitter. This approach can be used to obtain a 50‐ps full width at half maximum timing resolution over a wide range of visible and near-infrared wavelengths and can be extended to measure higher-order intensity correlations. Measurements of the second-order intensity correlation of a pulsed laser and an InGaAs quantum dot were made using both a two-element SNSPD and a conventional Hanbury Brown–Twiss interferometer to demonstrate the accuracy and advantages of the multielement SNSPD.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.78.053826
DOI:
10.1103/PhysRevA.78.053826
PACS:
42.50.Ar, 85.25.Oj, 42.50.Dv, 03.67.Dd
 
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