Summary
As part of an effort to improve quantum sensing, we are developing new semiconductor p-n junctions and designing novel nanowire arrays that have the potential to significantly enhance the ability to detect light at the single photon level over an unprecedented wavelength range from the ultraviolet to infrared. We are working to demonstrate high-speed single-photon detection with broadband high efficiency from the visible to near-infrared range (450-900 nm), with no need for cryogenic cooling. In the future, it will be possible to extend detection into the infrared wavelengths by changing the semiconductor material from InP to InGaAs. Applications resulting from this work can improve a broad range of technologies. These include quantum computing, quantum cryptography, single-molecule fluorescence spectroscopy, laser remote sensing (LIDAR), and single oxygen luminescence for cancer treatment dose monitoring.
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