Document Type
Article
Department
Physics
Publication Date
1-18-2011
Abstract
We present a multichannel coincidence-counting module for use in quantum optics experiments. The circuit takes up to four transistor–transistor logic pulse inputs and counts either twofold, threefold, or fourfold coincidences, within a user-selected coincidence-time window as short as 12 ns. The module can accurately count eight sets of multichannel coincidences, for input rates of up to 84 MHz. Due to their low cost and small size, multiple modules can easily be combined to count arbitrary M-order coincidences among N inputs.
Comments
Originally published in Review of Scientific Instruments 82 (2011): 016102. http://link.aip.org/link/doi/10.1063/1.3524571 Provided by the Trinity College Digital Repository in accordance with the publisher's archiving policies.