Suppose we apply the following replacement rules:
|0> ⇒ 0, |1> ⇒ 1
The probability that the measurement result by the current Basis becomes |0> can be get by the function below. This function is equivalent to Fig.1.
I am a professor emeritus of CS at Kanagawa Institute of Technology, Japan. Originally my specialty was parallel and distributed systems. My current interests include machine learning, natural language processing, creating mobile apps with MIT App Inventor, and quantum computing. In the web version of this blog, clicking the icon on the right (a plastic sphere) will take you to the "List of Quantum Computing Articles". - Fujio Yamamoto (for e-mail, add "@ieee.org" after "yamamotof")
2023年7月12日水曜日
Continuously measure quantum states with different orthonormal bases
Quantum entanglement plays an important role in Bell's theorem and the quantum key distribution protocol Ekert. But there is one more important thing. It is to successively measure the quantum state with different orthonormal bases. Both Fig.1 and Fig.2 give information about it, but isn't the graphical Fig.1 clearer than the mathematical representation of Fig.2?
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