Input and Output with a Quantum Computer etc

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SUMMARY

The discussion focuses on the physical processes involved in inputting and outputting information from a quantum computer, specifically regarding qubits and quantum dots. It is established that manipulating the state of these quantum systems requires a "knob" to adjust their position on the Bloch sphere. This manipulation is typically achieved through resonant microwave pulses, commonly utilized in Nuclear Magnetic Resonance (NMR) and solid-state computing. The effectiveness of these techniques is crucial for achieving desired entangled states between qubits.

PREREQUISITES
  • Understanding of qubits and quantum dots
  • Familiarity with the Bloch sphere representation
  • Knowledge of resonant microwave pulse techniques
  • Basic principles of entanglement in quantum mechanics
NEXT STEPS
  • Research the application of resonant microwave pulses in quantum computing
  • Explore the Bloch sphere and its significance in quantum state manipulation
  • Study the principles of entanglement and its role in quantum information processing
  • Investigate advancements in solid-state quantum computing technologies
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Quantum physicists, quantum computing researchers, and engineers working on quantum information systems will benefit from this discussion.

jaketodd
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What physical processes input information into and extract information out of a quantum computer? What I really want to know is: How do you get a qubit or quantum dot to take on a particular state and cause its' entangled partner to choose a state?

Thank you!
 
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It depends on the system. In general you need a "knob" that you can use to move the state of the system around on the Bloch sphere.
In most systems this is done using resonant pulses of some sort, usually (in e.g. NMR and solid state computing) this means applying short microwave pulses to the system.
 

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