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24 papers · 2 filters
Measurement-induced disturbances and nonclassical correlations of Gaussian states
Ladislav Mišta, Richard Tatham, Davide Girolami +2
We study quantum correlations beyond entanglement in two-mode Gaussian states of continuous variable systems, by means of the measurement-induced disturbance (MID) and its ameliora…
Using Berry's phase to detect the Unruh effect at lower accelerations
E. Martin-Martinez, I. Fuentes, R. B. Mann
We show that a detector acquires a Berry phase due to its motion in spacetime. The phase is different in the inertial and accelerated case as a direct consequence of the Unruh effe…
Quantum filtering for systems driven by fermion fields
J. E. Gough, M. I. Guta, M. R. James +1
Recent developments in quantum technology mean that is it now possible to manipulate systems and measure fermion fields (e.g. reservoirs of electrons) at the quantum level. This pr…
Lorentz invariance of entanglement classes in multipartite systems
Marcus Huber, Nicolai Friis, Andreas Gabriel +2
We analyze multipartite entanglement in systems of spin-1/2 particles from a relativistic perspective. General conditions which have to be met for any classification of multipartit…
Collective photon emission from symmetric states created with Rydberg atoms on a ring lattice
B. Olmos, I. Lesanovsky
We discuss the creation of non-classical light from collective atomic states that are prepared in a ring-shaped lattice. These states are realized by exploiting the strong interact…
Teleportation of squeezing: Optimization using non-Gaussian resources
F. Dell'Anno, S. De Siena, G. Adesso +1
We study the continuous-variable quantum teleportation of states, statistical moments of observables, and scale parameters such as squeezing. We investigate the problem both in ide…