Characteristics of quantum computers

• Communication Ability When they physically share entanglement,
  quantum information can be easily transmitted and
  shared with each other.
  Through this, communication complexity
  can be significantly reduced.
• Calculation Ability By using the superposition, interference, and
  entanglement characteristics of quantum information,
  it is easy to check the global characteristics of
  the data values to be processed, so it shows
  particularly excellent performance in problems
  that require a lot of complex parallel operations.
• Security Ability The observable collapsibility
  of quantum information, the impossibility of duplication,
  and the randomness of the expression method make
  it possible to use it more diversely than
  the existing method in information protection.

Source: Byungsoo Choi, Quantum Computing Development and Utilization Trend, 2016

Applications of quantum computers

Quantum Computing

key potential application

Source : “Nature.” Wikipedia
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• 
  Chemistry

  100s ~ 200s qubits
• 
  Optimization

  100s ~ 1,000s qubits
• 
  Machine Learning

  100s ~ 1,000s qubits
• 
  Material Science

  100s ~ 1,000s qubits
• 
  Unknown Problems

  100,000+ qubits