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Long-distance quantum information transfer with strong coupling hybrid solid system.

Feng-Yang Zhang1,2, Xin-Yu Chen2, Chong Li2

  • 1School of Physics and Materials Engineering, Dalian Nationalities University, Dalian 116600, China.

Scientific Reports
|November 21, 2015
PubMed
Summary
This summary is machine-generated.

This study shows how quantum information transfers between nitrogen-vacancy (NV) ensembles and LC circuits using a flux qubit interface. The hybrid solid architecture ensures high-fidelity information transfer, robust against system decay.

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Area of Science:

  • Quantum Computing
  • Solid-State Physics
  • Quantum Information Science

Background:

  • Quantum information transfer is crucial for scalable quantum computing.
  • Nitrogen-vacancy (NV) ensembles offer promising solid-state memory capabilities.
  • Hybrid architectures are explored to integrate different quantum components.

Purpose of the Study:

  • To demonstrate quantum information transfer in a novel hybrid solid architecture.
  • To utilize NV ensembles as long-distance memory units.
  • To employ an LC circuit as a transmitter/receiver and a flux qubit as an interface.

Main Methods:

  • Numerical simulations were performed to model the system.
  • The architecture integrates NV ensembles, LC circuits, and flux qubits.
  • The fidelity of quantum information transfer was analyzed.

Main Results:

  • High-fidelity quantum information transfer between the NV memory unit and the LC circuit transmitter/receiver was achieved.
  • The quantum information transfer process demonstrated robustness against LC circuit decay.
  • The process was also robust against spontaneous emission from the NV ensemble.

Conclusions:

  • A hybrid solid architecture enables robust, high-fidelity quantum information transfer.
  • NV ensembles are viable long-distance quantum memory units in such systems.
  • The proposed system is a promising step towards scalable quantum information processing.