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73 papers · 1 filter
Interaction-free measurement of multiple objects using a universal integrated photonic processor
Sara Franco, Anita Camillini, Ernesto F. Galvão
The phenomenon of interaction-free measurement (IFM) enables the probabilistic detection of an absorbing object with reduced photon absorption. We report the experimental implement…
Preparation of the single-spinon wave function on a quantum computer
D. Faílde, A. Gómez, J. Fernández-Rossier
We address the problem of how to prepare single-spinon wave functions, relevant for one-dimensional spin models, in a quantum computer. We adopt the recently proposed ansat…
Multi-state imaginarity and coherence in qubit systems
Mao-Sheng Li, Rafael Wagner, Lin Zhang
Traditionally, the characterization of quantum resources has focused on individual quantum states. Recent literature, however, has increasingly explored the characterization of res…
An Elementary Characterization of Bargmann Invariants
Sagar Silva Pratapsi, João Gouveia, Leonardo Novo +1
Bargmann invariants, also known as multivariate traces of quantum states , are unitary invariant quantities used to characterize weak values,…
Estimation of multivariate traces of states given partial classical information
Kyrylo Simonov, Rafael Wagner, Ernesto Galvão
Bargmann invariants of order , defined as multivariate traces of quantum states , are useful in applications ranging from quantum metrology to cert…
Bayesian Quantum Amplitude Estimation
Alexandra Ramôa, Luis Paulo Santos
We present BAE, a problem-tailored and noise-aware Bayesian algorithm for quantum amplitude estimation. In a fault tolerant scenario, BAE is capable of saturating the Heisenberg li…