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Towards the Heisenberg limit in microwave photon detection by a qubit array

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arxiv 2009.11271 v3 pith:72LK4WW4 submitted 2020-09-23 quant-ph cond-mat.supr-con

classification quant-phcond-mat.supr-con
keywords heisenberglimitmicrowavequbitachieveallowsanalyticallyarray
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Using an analytically solvable model, we show that a qubit array-based detector allows to achieve the fundamental Heisenberg limit in detecting single photons. In case of superconducting qubits, this opens new opportunities for quantum sensing and communications in the important microwave range.

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