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Quantum teleportation of physical qubits into logical code spaces.

Yi-Han Luo1,2,3, Ming-Cheng Chen1,2,3, Manuel Erhard4,5

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Quantum error correction is vital for quantum computing. This study demonstrates quantum gate teleportation to reliably implement essential operations, achieving high fidelities for future fault-tolerant quantum technologies.

Keywords:
quantum computingquantum entanglementquantum error correctionquantum teleportation

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Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Quantum Error Correction

Background:

  • Large-scale quantum information processing relies on quantum error correction.
  • Integrating essential nontransverse operations into quantum circuits is challenging due to error propagation.
  • Quantum gate teleportation offers a potential solution by replacing inline gates with entangled resource states.

Purpose of the Study:

  • To demonstrate the teleportation of quantum information into an error-correctable logical qubit.
  • To establish a maximally entangled state between a physical and a logical qubit for teleportation.
  • To advance fault-tolerant quantum computation through a robust gate implementation scheme.

Main Methods:

  • Creation of a maximally entangled state between a physical qubit and an error-correctable logical qubit.
  • Utilization of this entangled state as a resource for quantum gate teleportation.
  • Teleportation of quantum information from the physical qubit to the logical qubit.

Main Results:

  • Successful creation of entanglement between physical and logical qubits.
  • Demonstration of quantum information teleportation with fidelities reaching up to 0.786.
  • Validation of the scheme's potential for fault-tolerant implementation.

Conclusions:

  • Quantum gate teleportation is a viable method for implementing nontransverse operations in quantum circuits.
  • The developed scheme provides a pathway towards fault-tolerant quantum computation.
  • This approach is crucial for the development of scalable quantum technologies.