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10 papers · 2 filters
Coherence effects in the performance of the quantum Otto heat engine
Patrice A. Camati, Jonas F. G. Santos, Roberto M. Serra
The working substance fueling a quantum heat engine may contain coherence in its energy basis, depending on the dynamics of the engine cycle. In some models of quantum Otto heat en…
Optical study of the anisotropic erbium spin flip-flop dynamics
B. Car, L. Veissier, A. Louchet-Chauvet +2
We investigate the erbium flip-flop dynamics as a limiting factor of the electron spin lifetime and more generally as an indirect source of decoherence in rare-earth doped insulato…
Generation of non-classical light in a photon-number superposition
J. C. Loredo, C. Antón, B. Reznychenko +12
The ability to generate light in a pure quantum state is essential for advances in optical quantum technologies. However, obtaining quantum states with control in the photon-number…
Communication through coherent control of quantum channels
Alastair A. Abbott, Julian Wechs, Dominic Horsman +2
A completely depolarising quantum channel always outputs a fully mixed state and thus cannot transmit any information. In a recent Letter [D. Ebler et al., Phys. Rev. Lett. 120, 12…
On the definition and characterisation of multipartite causal (non)separability
Julian Wechs, Alastair A. Abbott, Cyril Branciard
The concept of causal nonseparability has been recently introduced, in opposition to that of causal separability, to qualify physical processes that locally abide by the laws of qu…
Experimentally Probing the Algorithmic Randomness and Incomputability of Quantum Randomness
Alastair A. Abbott, Cristian S. Calude, Michael J. Dinneen +1
The advantages of quantum random number generators (QRNGs) over pseudo-random number generators (PRNGs) are normally attributed to the nature of quantum measurements. This is often…