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Researchers have repurposed quantum teleportation to sample random quantum circuits, a key task for demonstrating quantum computational supremacy. This novel quantum-inspired classical computing approach significantly reduces the number of qubits needed for complex simulations.

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Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Classical Computing

Background:

  • Quantum teleportation is a fundamental protocol for transferring quantum information via entanglement.
  • It has applications in quantum computing, including one-way quantum computation.
  • Sampling random quantum circuits is crucial for demonstrating quantum computational supremacy.

Purpose of the Study:

  • To explore the application of quantum teleportation to classical computing tasks.
  • To develop a new method for sampling random quantum circuits relevant to quantum supremacy.
  • To introduce a quantum-inspired classical computing technology.

Main Methods:

  • Converted classical computation in physical-qubit state space to simulate teleportation in logical-qubit state space.
  • Tested the method on 1D and 2D lattices with up to 1000 qubits.

Main Results:

  • Demonstrated that quantum teleportation can facilitate the classical task of sampling random quantum circuits.
  • Achieved a significant reduction in the number of qubits required for classical simulation.
  • Successfully tested the method on large-scale qubit lattices.

Conclusions:

  • This work presents a novel quantum-inspired classical computing technology.
  • The method is valuable for designing and optimizing quantum sampling experiments.
  • It offers a new pathway for simulating complex quantum systems classically.