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15 papers · 2 filters
Photonic Discrete-time Quantum Walks and Applications
Leonardo Neves, Graciana Puentes
We present a review of photonic implementations of discrete-time quantum walks (DTQW) in the spatial and temporal domains, based on spatial- and time-multiplexing techniques, respe…
Cooling to absolute zero: The unattainability principle
Nahuel Freitas, Rodrigo Gallego, Lluís Masanes +1
The unattainability principle (UP) is an operational formulation of the third law of thermodynamics stating the impossibility to bring a system to its ground state in finite time.…
State dependent motional squeezing of a trapped ion: new method and applications
Martín Drechsler, María Belén Farías Nahuel Freitas, Christian Tomás Schmiegelow +1
We show that the motion of a cold trapped ion can be squeezed by modulating the intensity of a phase-stable optical lattice placed inside the trap. As this method is reversible and…
Role of indistinguishability in interferometric phase estimation
Laura T. Knoll, Gustavo M. Bosyk, Ignacio H. López Grande +1
We report a theoretical and experimental study on the role of indistinguishability in the estimation of an interferometric phase. In particular, we show that the quantum Fisher inf…
Exploiting Landscape Geometry to Enhance Quantum Optimal Control
Martin Larocca, Esteban A. Calzetta, Diego A. Wisniacki
The successful application of Quantum Optimal Control (QOC) over the past decades unlocked the possibility of directing the dynamics of quantum systems. Nevertheless, solutions obt…
The importance of being measurement
Esteban Calzetta
Energy exchanges under form of heat is neither the most natural or efficient way to operate an engine in the quantum realm. Recently there have been in the literature several propo…