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.
Composite Superconductors for Improved Quantum Coherence
Summary Conventional superconductors have trouble performing well in magnetic fields required for electron spin resonance (ESR) – based quantum information processing applications. We can, however, use proximity engineering to select desired properties from different materials and combine them for improved superconducting performance in magnetic fields — an improvement that would have strong implications for […]
December 12, 2018
A Reformulation of Quantum Game Theory
Summary Classical game theory – conducted at the interface between economics and computer science – has found applications in topics ranging from networking and security to online markets. Despite over 20 years of research into connections between game theory and quantum information, we have yet to see any significant implications of quantum information when applied […]
April 1, 2020
Topological Quantum Computing on Majorana Platform
Full-scale quantum computing will require the capability for error-tolerant quantum information processing.
January 11, 2017
Engineering and Characterizing Programmable Interaction Graphs in a Trapped Ion Quantum Simulator
Summary Quantum simulators have the potential to bring unprecedented capabilities in areas such as the discovery of new materials and drugs. Engineering precise and programmable interaction graphs between qubits or spins forms the backbone of simulator applications. The trapped ion system is unique in that the interaction graph between qubits can be programmed, in […]
July 24, 2018