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Setting Limits on Supersymmetry Using Simplified Models
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Experimental Gaussian Boson sampling.

Han-Sen Zhong1, Li-Chao Peng1, Yuan Li1

  • 1Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.

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|January 20, 2023
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Summary
This summary is machine-generated.

Gaussian Boson sampling (GBS) offers a faster quantum computation method using squeezed states. This study demonstrates GBS with high efficiency, achieving quantum speed-up for complex problems.

Keywords:
Boson samplingGaussian Boson samplingQuantum advantageQuantum approximate optimizationQuantum informationSqueezed state

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Area of Science:

  • Quantum Information Science
  • Quantum Computing

Background:

  • Gaussian Boson sampling (GBS) leverages squeezed states for efficient computation.
  • It offers advantages over standard Boson sampling with Fock states.
  • GBS has potential applications in optimization and molecular simulations.

Purpose of the Study:

  • To experimentally demonstrate GBS using high-quality squeezed-state sources.
  • To validate the performance of GBS for 3-, 4-, and 5-photon scenarios.
  • To investigate the potential for quantum speed-up in solving NP-hard problems.

Main Methods:

  • Utilized squeezed-state sources with high photon indistinguishability and collection efficiency.
  • Implemented and validated 3-, 4-, and 5-photon GBS experiments.
  • Compared computational performance against simulated thermal and uniform samplers.

Main Results:

  • Achieved high sampling rates: 832 kHz (3-photon), 163 kHz (4-photon), and 23 kHz (5-photon).
  • Demonstrated sampling rates significantly faster (4.4x to 29.5x) than previous experiments.
  • Observed a quantum speed-up for an NP-hard optimization problem.

Conclusions:

  • The first experimental demonstration of GBS with high-performance squeezed-state sources was successful.
  • The results confirm the efficiency and scalability of GBS for quantum computation.
  • GBS shows promise for accelerating solutions to classically intractable problems.