Nanowire superconducting single photon detectors (SSPDs) are unique detectors for many applications in quantum information and communications technology, owing to their ultrafast photoresponse, low dark count rate and low timing jitter. However, they have limited detection efficiency due to small optical absorption in ultrathin wires. A promising approach to increase the photon absorption in SSPDs, is integrating them with advanced optical structures. We demonstrate the successful integration of SSPDs with optical microcavities based on GaAs/AlAs Bragg mirrors. Characterization of these devices reveals clear cavity enhancement of the detection efficiency, resulting in a peak value of18% at 2=l300nm and T=4.2K
|Title of host publication||Proceedings of the 15th Annual Symposium of the IEEE Photonics Benelux Chapter, 18-19 November 2010, Delft, The Netherlands|
|Editors||J. Pozo, M. Mortensen, P. Urbach, X. Leijtens, M. Yousefi|
|Place of Publication||Delft|
|Publication status||Published - 2010|
Jahanmirinejad, S., Gaggero, A., Bitauld, D., Marsili, F., Sahin, D., Mattioli, F., Leoni, R., Hamhuis, G. J., Nötzel, R., Sanjines, R., & Fiore, A. (2010). Cavity-enhanced superconducting single-photon detectors on GaAs substrate. In J. Pozo, M. Mortensen, P. Urbach, X. Leijtens, & M. Yousefi (Eds.), Proceedings of the 15th Annual Symposium of the IEEE Photonics Benelux Chapter, 18-19 November 2010, Delft, The Netherlands (pp. 21-24). TNO.