Ramsey interferometry is a quantum measurement technique used to analyze the coherence properties of quantum states by splitting a quantum system into two paths, applying a phase shift, and then recombining the paths. This method allows for high-precision measurements of frequency differences and phase shifts, making it crucial for applications in quantum sensing. It connects with fundamental concepts such as coherence and decoherence, highlights the effectiveness of various quantum sensing techniques, distinguishes quantum from classical measurements, and plays a role in advanced methods like spin squeezing and atomic interferometry.
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