856 citations
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ30 papers
- Czech Academy of SciencesCZ15 papers
- Argonne National LaboratoryUS14 papers
- Centre National de la Recherche ScientifiqueFR14 papers
- Fermi National Accelerator LaboratoryUS14 papers
- Radboud University NijmegenNL14 papers
- Sorbonne UniversitéFR14 papers
- Charles UniversityCZ13 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR13 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL13 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR13 papers
- Instituto de Física CorpuscularES13 papers
14 papers · 2 filters
Fibre-optics implementation of asymmetric phase-covariant quantum cloner
Lucie Bartuskova, Miloslav Dusek, Antonin Cernoch +2
We present the experimental realization of optimal symmetric and asymmetric phase-covariant 1->2 cloning of qubit states using fiber optics. State of each qubit is encoded into a s…
Diluted maximum-likelihood algorithm for quantum tomography
Jaroslav Rehacek, Zdenek Hradil, E. Knill +1
We propose a refined iterative likelihood-maximization algorithm for reconstructing a quantum state from a set of tomographic measurements. The algorithm is characterized by a very…
Optimal multicopy asymmetric Gaussian cloning of coherent states
Jaromir Fiurasek, Nicolas J. Cerf
We investigate the asymmetric Gaussian cloning of coherent states which produces M copies from N input replicas, such that the fidelity of all copies may be different. We show that…
Experimental phase-covariant cloning of polarization states of single photons
A. Cernoch, L. Bartuskova, J. Soubusta +3
The experimental realization of optimal symmetric phase-covariant 1->2 cloning of qubit states is presented. The qubits are represented by polarization states of photons generated…
Squeezed state purification with linear optics and feed forward
O. Glöckl, U. L. Andersen, R. Filip +2
A scheme for optimal and deterministic linear optical purification of mixed squeezed Gaussian states is proposed and experimentally demonstrated. The scheme requires only linear op…
Optimal probabilistic estimation of quantum states
Jaromir Fiurasek
We extend the concept of probabilistic unambiguous discrimination of quantum states to quantum state estimation. We consider a scenario where the measurement device can output eith…