Projects per year
In this work we report on a single photon detector system which offers near-unity detection efficiency using waveguide-coupled superconducting nanowires with lengths on the order of 1 μm. This is achieved by embedding the nanowires in a racetrack resonator where the interaction time with the photons trapped in the cavity is increased, thereby allowing for shorter nanowires. We expect this to lead to a higher fabrication yield as the amount of inhomogeneities decreases for shorter nanowires. Our simulations show a system with a 1 μm long superconducting nanowire single photon detector (SNSPD) operating at near-unity detection efficiency using design parameters that can be realistically achieved with conventional fabrication processes. The resonant cavity introduces spectral selectivity to the otherwise broad-band SNSPDs and the cavity induced timing jitter is shown to be insignificant for SNSPDs longer than 1 μm.
- Optical resonators
- Integrated optics
- Wavelength filtering devices
- Photonic integrated circuits
FingerprintDive into the research topics of 'Modelling superconducting nanowire single photon detectors in a waveguide cavity'. Together they form a unique fingerprint.
O'Brien, J. L.
1/02/13 → 31/01/23
1/04/16 → 30/06/22
Thompson, M. G.
1/05/15 → 16/04/19
- School of Physics - Senior Lecturer
- Department of Electrical & Electronic Engineering - Senior Lecturer
- Quantum Engineering Centre for Doctoral Training (EPSRC)
- QET Labs
- The Bristol Centre for Nanoscience and Quantum Information
Person: Academic , Member