Heisenberg-scaling measurement of the single-photon Kerr non-linearity using mixed states

Heisenberg-scaling measurement of the single-photon Kerr non-linearity using mixed states

Heisenberg-scaling measurement of the single-photon Kerr non-linearity using mixed states, Published online: 08 January 2018; doi:10.1038/s41467-017-02487-z

Quantum metrology usually relies on entanglement or squeezing for pursuing Heisenberg-limited precision. In this work, instead, the authors demonstrate Heisenberg-scaling measurement of a single photon Kerr's nonlinearity using less-demanding mixed states.

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