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Scalable quantum computing with Josephson charge qubits.

J Q You1, J S Tsai, Franco Nori

  • 1Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi 351-0198, Japan.

Physical Review Letters
|November 22, 2002
PubMed
Summary
This summary is machine-generated.

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This study introduces a scalable quantum computing architecture using Josephson charge qubits. It enables efficient qubit coupling and a simplified conditional gate implementation, overcoming major quantum computing challenges.

Area of Science:

  • Quantum Information Technology
  • Quantum Computing

Background:

  • Scalability and controlled connectivity between qubits are significant challenges in quantum computing.
  • Current quantum computing architectures face limitations in efficiently controlling quantum states.

Purpose of the Study:

  • To propose an experimental method for scalable quantum computing using Josephson charge qubits.
  • To address the limitations of qubit connectivity and conditional gate implementation.

Main Methods:

  • Utilizing Josephson charge qubits for quantum state control.
  • Implementing an architecture where any two qubits can be coupled via an accessible inductance.
  • Developing a quantum computing scheme with a single two-bit operation for conditional gates.

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Main Results:

  • A scalable quantum computing architecture is proposed.
  • Efficient coupling between any two charge qubits is demonstrated through experimental inductance.
  • A simplified quantum computing scheme requiring only one two-bit operation for conditional gates is formulated.

Conclusions:

  • The proposed method efficiently solves scalability and connectivity problems in quantum computing.
  • The architecture offers a realizable and efficient approach to building quantum computers.
  • This work advances the development of practical quantum information technology.