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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Compact field programmable gate array-based pulse-sequencer and radio-frequency generator for experiments with

Thaned Pruttivarasin1, Hidetoshi Katori1

  • 1Quantum Metrology Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan.

The Review of Scientific Instruments
|December 3, 2015
PubMed
Summary

We developed a compact FPGA-based pulse sequencer and RF generator for cold atom and ion experiments. This device offers precise control with 32 TTL channels and 16 RF sources for advanced quantum research.

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Area of Science:

  • Atomic, Molecular, and Optical (AMO) Physics
  • Quantum Information Science
  • Experimental Physics

Background:

  • Precise control of experimental parameters is crucial for advancements in cold atom and ion research.
  • Existing equipment can be bulky and lack the integrated functionality required for complex quantum experiments.

Purpose of the Study:

  • To develop a compact, versatile, and high-performance pulse sequencer and radio-frequency (RF) generator.
  • To provide researchers with an integrated solution for controlling cold trapped ions and atoms.

Main Methods:

  • Utilized a field-programmable gate array (FPGA) for pulse sequencing and RF generation.
  • Integrated 32 transistor-transistor logic (TTL) channels with 40 ns timing resolution.
  • Incorporated 16 independent direct-digital-synthesizer (DDS) RF sources with sub-mHz frequency tuning (0-800 MHz) and fast amplitude switching (∼60 ns rise-time).
  • Included a 100 MHz frequency counter for photo-multiplier tube (PMT) pulse detection.

Main Results:

  • Demonstrated a compact unit capable of generating complex pulse sequences.
  • Achieved high timing resolution (40 ns) for precise experimental control.
  • Provided 16 independent RF sources with flexible frequency and amplitude modulation.
  • Successfully integrated a frequency counter for real-time data acquisition.

Conclusions:

  • The developed FPGA-based pulse sequencer and RF generator is a suitable tool for cold trapped ion and atom experiments.
  • The device offers significant advantages in terms of compactness, channel count, timing precision, and RF control.
  • This technology can facilitate new experimental possibilities and accelerate research in quantum science.