Quantum Tech

If you would still feel rusty on your foundational quantum knowledge, please visit Quantum 101 - Alt. Resources for additional resource I've gathered to help.

Undoubtedly, quantum technologies have the potential to dramatically change certain areas and industries as know it as we apply it and as the sector develops. There are 4 main kinds of quantum technologies that will come up:

1. Quantum computers

• These devices are here and san speed up certain calculations dramatically
• Not just both 0 and 1 but rather in between 0 and 1
• Can process much more information with qubits than bits
• This speedup  only works with certain calculations
• To be useful  - need to bring  a large number of  qubits (~1 mill qubits)
• Question is not will it work, it is rather will it scale
  • quantum computers already exist today
  • yet status is similar to how nuclear fusion worked 50 years ago, effective and still in process

2. Quantum internet

• Information transmitted with quantum effects
• Uses quantum cryptography as a security protocol
• It irreversibly changes the state of an information particle
• Cannot transfer info faster than speed of light or with any other quantum effect
• quantum computer can break current protocols
• Quantum internet can be safe from hacking by quantum computers
• Caveat - Post quantum or quantum-safe cryptography
  • People that work on quantum  things dont like to mention this though

3. Quantum metrology

• Collection of measurements to improve quantum effects
• Medicine and material science
• Can make do with very few particles with minimal damage to sample
• Most promising quantum technology

4. Quantum simulations

• Very useful in trying to understand complicated system
• By reproducing system that you can control better to better predict system
• Dramatic shift in modern physics as you can take out mathematics
• Instead of simulating with mathematics you model it directly  with another system
• Simulate particles similar to the higgs which you cannot do in any other way
  • though headlines like the simulated wormhole is nonsense
    via source

5. Quantum Sensors

Next up : let's see how we use them with existing quantum software & hardware -->

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