856 citations
- Queen's University BelfastGB4 papers
- Leibniz University HannoverDE3 papers
- Max Planck Institute for Gravitational PhysicsDE3 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ2 papers
- Max Planck SocietyDE2 papers
- Slovak Academy of SciencesSK2 papers
- Universidad Complutense de MadridES2 papers
- Université Libre de BruxellesBE2 papers
- Aarhus UniversityDK1 paper
- Ghent UniversityBE1 paper
- Hanyang UniversityKR1 paper
- Institute for Nuclear ResearchRU1 paper
6 papers · 2 filters
Experimental test of uncertainty relations for quantum mechanics on a circle
J. Rehacek, Z. Bouchal, R. Celechovsky +2
We rederive uncertainty relations for the angular position and momentum of a particle on a circle by employing the exponential of the angle instead of the angle itself, which leads…
On the distillation and purification of phase-diffused squeezed states
B. Hage, A. Franzen, J. DiGuglielmo +3
Recently it was discovered that non-Gaussian decoherence processes, such as phase-diffusion, can be counteracted by purification and distillation protocols that are solely built on…
Experimental demonstration of continuous variable purification of squeezed states
A. Franzen, B. Hage, J. DiGuglielmo +2
We report on the first experimental demonstration of purification of nonclassical continuous variable states. The protocol uses two copies of phase-diffused states overlapped on a…
Probabilistic purification of noisy coherent states
Petr Marek, Radim Filip
A basic feasible probabilistic purification of unknown noisy coherent states, outgoing from different state preparations with unknown mean number of thermal photons, is proposed. T…
Several experimental realizations of symmetric phase-covariant quantum cloner of single-photon qubits
J. Soubusta, L. Bartuskova, A. Cernoch +2
We compare several optical implementations of phase-covariant cloning machines. The experiments are based on copying of the polarization state of a single photon in bulk optics by…
Nonclassicality in phase space and nonclassical correlation
Petr Marek, M. S. Kim, Jinhyoung Lee
Continuous variable entanglement is a manifestation of nonclassicality of quantum states. In this paper we attempt to analyze whether and under which conditions nonclassicality can…