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+
+# Quantum Tech
+
+
+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](https://www.youtube.com/watch?v=b-aGIvUomTA)
+
+## 5. Quantum Sensors
+
+Next up let's  see how  we use  them  -->