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Classical Fisher information in swap-test interfer- ometry with entangled coherent states

The highest quantum Fisher information (and therefore highest phase sensitivity) is achieved in the two limiting cases n1 = 0, n1 = n which correspond to the whole energy being con

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Swap-test interferometry with biased ancilla noise

quant-ph · 2021-12-05 · unverdicted · novelty 6.0

Swap tests on ancilla qubits project Fock and coherent states onto NOON and entangled coherent states inside a Mach-Zehnder interferometer, recovering Heisenberg scaling while tolerating biased ancilla phase-flip noise.

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  • Swap-test interferometry with biased ancilla noise quant-ph · 2021-12-05 · unverdicted · none · ref 3

    Swap tests on ancilla qubits project Fock and coherent states onto NOON and entangled coherent states inside a Mach-Zehnder interferometer, recovering Heisenberg scaling while tolerating biased ancilla phase-flip noise.