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9 papers · 2 filters
Manipulating Transverse Modes of Photons for Quantum Cryptography
Marcelo Alejandro Luda, Miguel Antonio Larotonda, Juan Pablo Paz +1
Several schemes have been proposed to extend Quantum Key Distribution protocols aiming at improving their security or at providing new physical substrates for qubit implementation.…
Dynamical energy transfer in ac driven quantum systems
Maria Florencia Ludovico, Jong Soo Lim, Michael Moskalets +2
We analyze the time-dependent energy and heat flows in a resonant level coupled to a fermionic continuum. The level is periodically forced with an external power source that suppli…
Preparing arbitrary pure states of spatial qudits with a single phase-only spatial light modulator
M. A. Solís-Prosser, A. Arias, J. J. M. Varga +4
Spatial qudits are D-dimensional () quantum systems carrying information encoded in the discretized transverse momentum and position of single photons. We present a proof-…
Quantum Speed Limit and optimal evolution time in a two-level system
P. M. Poggi, F. C. Lombardo, D. A. Wisniacki
Quantum mechanics establishes a fundamental bound for the minimum evolution time between two states of a given system. Known as the quantum speed limit (QSL), it is a useful tool i…
Formal features of a General Theoretical Framework for Decoherence in open and closed systems
Mario Castagnino, Sebastian Fortin
Two complementary decoherence formalisms, Environment Induced Decoherence (EID) for open systems and Self Induced Decoherence (SID) for close systems are compared under a common Ge…
The Paraconsistent Logic of Quantum Superpositions
Newton da Costa, Christian de Ronde
Physical superpositions exist both in classical and in quantum physics. However, what is exactly meant by 'superposition' in each case is extremely different. In this paper we disc…