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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

High speed optical quantum random number generation.

Martin Fürst1, Henning Weier, Sebastian Nauerth

  • 1Fakultät für Physik, Ludwig-Maximilians-Universität München, D-80799 München, Germany 2qutools GmbH, D-80539 München, Germany. martin.fuerst@qutools.com

Optics Express
|July 1, 2010
PubMed
Summary
This summary is machine-generated.

We developed a quantum random number generator (QRNG) using single photon detection. Annoying deadtime effects in photomultiplier tubes (PMT) are cleverly used to eliminate postprocessing, producing high-quality random numbers.

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Area of Science:

  • Quantum Physics
  • Information Technology
  • Applied Optics

Background:

  • Random number generation is crucial for secure communication and scientific simulations.
  • Existing methods often require complex postprocessing to ensure randomness.
  • Quantum phenomena offer a source of inherently unpredictable random numbers.

Purpose of the Study:

  • To present a fully integrated, ready-to-use quantum random number generator (QRNG).
  • To demonstrate the utility of photomultiplier tube (PMT) deadtime effects in QRNGs.
  • To achieve high-rate random number generation without postprocessing.

Main Methods:

  • Utilizing the stochastic nature of single photon detection in attenuated light.
  • Leveraging deadtime effects in photomultiplier tubes (PMTs) to mitigate bias and correlations.
  • Directly outputting random numbers to a PC at high generation rates.

Main Results:

  • A fully integrated and operational QRNG system was successfully developed.
  • Deadtime effects were effectively used to eliminate the need for postprocessing.
  • Generated random numbers passed all relevant tests for physical random number generators.

Conclusions:

  • The presented QRNG offers a practical solution for high-speed, high-quality random number generation.
  • The innovative use of PMT deadtime simplifies QRNG design and improves efficiency.
  • This work paves the way for more accessible and reliable quantum random number generation.