47 lines
2.1 KiB
Markdown
47 lines
2.1 KiB
Markdown
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# Quantum Tech
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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:
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## 1. Quantum computers
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- These devices are here and san speed up certain calculations dramatically
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- Not just both 0 and 1 but rather in between 0 and 1
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- Can process much more information with qubits than bits
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- This speedup only works with certain calculations
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- To be useful - need to bring a large number of qubits (~1 mill qubits)
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- Question is not will it work, it is rather **will it scale**
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- quantum computers already exist today
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- yet status is similar to how nuclear fusion worked 50 years ago, effective and still in process
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## 2. Quantum internet
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- Information transmitted with quantum effects
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- Uses quantum cryptography as a security protocol
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- It irreversibly changes the state of an information particle
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- Cannot transfer info faster than speed of light or with any other quantum effect
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- quantum computer can break current protocols
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- Quantum internet can be safe from hacking by quantum computers
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- Caveat - Post quantum or quantum-safe cryptography
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- People that work on quantum things dont like to mention this though
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## 3. Quantum metrology
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- Collection of measurements to improve quantum effects
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- Medicine and material science
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- Can make do with very few particles with minimal damage to sample
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- Most promising quantum technology
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## 4. Quantum simulations
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- Very useful in trying to understand complicated system
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- By reproducing system that you can control better to better predict system
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- Dramatic shift in modern physics as you can take out mathematics
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- Instead of simulating with mathematics you model it directly with another system
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- Simulate particles similar to the higgs which you cannot do in any other way
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- though headlines like the simulated wormhole is nonsense
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via [source](https://www.youtube.com/watch?v=b-aGIvUomTA)
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## 5. Quantum Sensors
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Next up let's see how we use them -->
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