2,818 karma · joined May 2, 2013
We're hiring software engineers, hardware engineers, RF engineers, FPGA and ASIC engineers, Optics/Mechanical/Optomech engineers, and Physicists with a background in atomic physics and/or characterization of quantum systems.
We trap Ytterbium atoms with lasers, and then use each atom as a qubit in a quantum register. A flash of green light accomplishes the quantum analog of a NOT gate. Two atoms held sufficiently close followed by a flash of UV light accomplishes the quantum analog of an XOR gate. The company is well funded and growing quickly. We have an endless supply of rich and interesting signal processing challenges. Atoms, famously used in atomic clocks, are very precise and sensitive to all the imperfections in your system. This makes for very demanding signal paths. Compiling programs for this architecture also involves interesting compiler challenges/optimizations. You'll have fun.
Edit: They did it with Colossus and now they're doing the exact same thing with Colossus2. https://www.selc.org/news/xai-built-an-illegal-power-plant-t...
Shor’s algorithm works on the quantum Fourier transform. The quantum Fourier transform works because you can pick a frequency out of a signal using a “test wave.” The test wave can select out the amplitude of interest because the information of the test wave constructively interferes, whereas every other frequency cancels. This is the interference effect that can only happen with complex/negative probability amplitudes.