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12 papers · 2 filters
Brownian Entanglement
A. E. Allahverdyan, A. Khrennikov, Th. M. Nieuwenhuizen
We show that for two classical brownian particles there exists an analog of continuous-variable quantum entanglement: The common probability distribution of the two coordinates and…
Bath Assisted Cooling of Spins
A. E. Allahverdyan, R. Serral Gracia, Th. M. Nieuwenhuizen
A suitable sequence of sharp pulses applied to a spin coupled to a bosonic bath can cool its state, i.e., increase its polarization or ground state occupation probability. Starting…
Work extraction in the spin-boson model
A. E. Allahverdyan, R. Serral Gracia, Th. M. Nieuwenhuizen
We show that work can be extracted from a two-level system (spin) coupled to a bosonic thermal bath. This is possible due to different initial temperatures of the spin and the bath…
An atom interferometer enabled by spontaneous decay
R. A. Cornelussen, R. J. C. Spreeuw, H. B. van Linden van den Heuvell
We investigate the question whether Michelson type interferometry is possible if the role of the beam splitter is played by a spontaneous process. This question arises from an insp…
Multipartite Nonlocal Quantum Correlations Resistant to Imperfections
H. Buhrman, P. Hoyer, S. Massar +1
We use techniques for lower bounds on communication to derive necessary conditions in terms of detector efficiency or amount of super-luminal communication for being able to reprod…
Oscillator model for dissipative QED in an inhomogeneous dielectric
A. J. van Wonderen, L. G. Suttorp
The Ullersma model for the damped harmonic oscillator is coupled to the quantised electromagnetic field. All material parameters and interaction strengths are allowed to depend on…