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Teleportation-based noiseless quantum amplification of coherent states of light
Jaromír Fiurášek
We propose and theoretically analyze a teleportation-based scheme for high-fidelity noiseless quantum amplification of coherent states of light. In our approach, the probabilistic…
Experimental demonstration of optimal probabilistic enhancement of quantum coherence
Robert Stárek, Michal Mičuda, Michal Kolář +2
We theoretically and experimentally investigate conditional enhancement of overall coherence of quantum states by probabilistic quantum operations that apply to the input state a q…
Quantum non-Gaussianity criteria based on vacuum probabilities of original and attenuated state
Jaromír Fiurášek, Lukáš Lachman, Radim Filip
Quantum non-Gaussian states represent an important class of highly non-classical states whose preparation requires quantum operations or measurements beyond the class of Gaussian o…
Optimal implementation of two-qubit linear optical quantum filters
Jaromír Fiurášek, Robert Stárek, Michal Mičuda
We design optimal interferometric schemes for implementation of two-qubit linear optical quantum filters diagonal in the computational basis. The filtering is realized by interfere…
Direct experimental certification of quantum non-Gaussian character and Wigner function negativity of single-photon detectors
Josef Hloušek, Miroslav Ježek, Jaromír Fiurášek
Highly nonclassical character of optical quantum detectors, such as single-photon detectors, is essential for preparation of quantum states of light and a vast majority of applicat…