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Synchronized time tagger for single-photon detection in one- and two-dimension quantum experiments.

Runchuan Ye1, Xue Lin1, Feifei Zhou1

  • 1School of Microelectronics, Hefei University of Technology, Hefei, Anhui 230009, China.

The Review of Scientific Instruments
|July 1, 2022
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Summary
This summary is machine-generated.

We developed a fast, synchronized time tagger using a field-programmable-gate-array chip for quantum experiments. This device enhances experimental efficiency and data collection for precise single-photon detection.

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Area of Science:

  • Quantum Information Science
  • Experimental Physics
  • Nanotechnology

Background:

  • Precise timing is crucial for advanced quantum experiments, particularly those involving single-photon detection.
  • Conventional synchronization methods in quantum experiments can limit efficiency and data acquisition speed.
  • Nitrogen-vacancy (NV) centers in diamond are promising qubits for quantum computing and sensing, requiring high-resolution characterization.

Purpose of the Study:

  • To develop and demonstrate a high-precision, hardware-synchronized time tagger for quantum experiments.
  • To improve the efficiency and speed of quantum experiments through hardware synchronization.
  • To enable advanced optical characterization of quantum systems like NV centers.

Main Methods:

  • Implementation of a synchronized time tagger on a field-programmable-gate-array (FPGA) chip.
  • Utilizing hardware synchronization to ensure precise correlation between control parameters and acquired data.
  • Employing the time tagger for single-photon detection in quantum experiments, including those with NV centers.

Main Results:

  • Achieved a 9.2 ps single-shot root-mean-square precision for time tagging.
  • Integrated 1 GB dynamic memory for substantial data storage.
  • Demonstrated up to 61.3% efficiency improvement in a typical NV center quantum experiment due to hardware synchronization.
  • Enabled detailed electrical benchmarking and advanced optical feature analysis of quantum systems.

Conclusions:

  • The FPGA-based synchronized time tagger significantly enhances efficiency and precision in quantum experiments.
  • Hardware synchronization offers a substantial advantage over software synchronization for faster and more efficient quantum control.
  • The developed technique is versatile and can be readily applied to various quantum control systems and experiments.