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10 papers · 2 filters
Continuous variable entanglement in a cold-atoms mirrorless optical parametric oscillator
G. C. Borba, R. S. N. Moreira, L. S. Cruz +3
In this work, we explore both the internal and external atomic degrees of freedom to observe quantum entanglement between the modes produced by a mirrorless optical parametric osci…
Exact solution for a class of quantum models of interacting bosons
Valery Shchesnovich
Quantum models of interacting bosons have a wide range of applications, including the propagation of optical modes in nonlinear media, such as the -photon down-conversion. Many…
Improving parameters estimation in Gaussian channels using quantum coherence
Jonas F. G. Santos, Carlos H. S. Vieira, Wilder R. Cardoso
Gaussian quantum channels are relevant operations in continuous variable systems. In general, given an arbitrary state, the action on it is well-known provided that the quantum cha…
A Family of Local Deterministic Models for Singlet Quantum State Correlations
E. Aldo Arroyo
This work investigates the implications of relaxing the measurement independence assumption in Bell's theorem by introducing a new class of local deterministic models that account…
Enhancing Gaussian quantum metrology with position-momentum correlations
João C. P. Porto, Lucas S. Marinho, Pedro R. Dieguez +2
Quantum metrology offers significant improvements in several quantum technologies. In this work, we propose a Gaussian quantum metrology protocol assisted by initial position-momen…
Entanglement dynamics of two modes coupled through a dissipative movable mirror in an optomechanical system
Bruno P. Schnepper, Danilo Cius, Fabiano M. Andrade
Nonclassical states are an important class of states in quantum mechanics, particularly for applications in quantum information theory. Optomechanical systems are invaluable platfo…