We propose a quantum-optics model of laser light interacting with\nan N-qubit system, say a polyatomic molecule, via a generalized Jaynes-Cummings\ninteraction which, in principle, could achieve the exponentially enhanced\nprecision.Shasanka Roy...
The output noise has the same magnitude as the input noise, and hence taking advantage of our enhanced QFI does not need following amplification stages to be quantum limited. This represents a significant practical advantage. We also note that Ref. 5 studied non-Hermitian quantum sensing that ...
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