OREO is a numerically optimized protocol for direct estimation of arbitrary observables in quantum harmonic oscillators via mapping to an ancillary qubit in bosonic cQED.
Fiur´ aˇ sek, Efficient construction of witnesses of the stel- lar rank of nonclassical states of light, Optics Express30, 30630 (2022)
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Direct estimation of arbitrary observables of an oscillator
OREO is a numerically optimized protocol for direct estimation of arbitrary observables in quantum harmonic oscillators via mapping to an ancillary qubit in bosonic cQED.