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6 papers · 2 filters
Deterministic Generation of Photon Pairs within the Bad Cavity Limit
Yue Chang, Alejandro González-Tudela, Carlos Sánchez-Muñoz +2
The development, characterization and control of -photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction,…
Quantum Phase Transitions detected by a local probe using Time Correlations and Violations of Leggett-Garg Inequalities
F. J. Gómez-Ruiz, J. J. Mendoza-Arenas, F. J. Rodríguez +2
In the present paper we introduce a way of identifying quantum phase transitions of many-body systems by means of local time correlations and Leggett-Garg inequalities. This proced…
A chiral route to spontaneous entanglement generation
Carlos Gonzalez-Ballestero, Alejandro Gonzalez-Tudela, Francisco J. Garcia-vidal +1
We study the generation of spontaneous entanglement between two qubits chirally coupled to a waveguide. The maximum achievable concurrence is demonstrated to increase by a factor o…
Degenerate parametric oscillation in quantum membrane optomechanics
Mónica Benito, Carlos Sánchez Muñoz, Carlos Navarrete-Benlloch
The promise of innovative applications has triggered the development of many modern technologies capable of exploiting quantum effects. But in addition to future applications, such…
Cavity-induced modifications of molecular structure in the strong coupling regime
Javier Galego, Francisco J. Garcia-Vidal, Johannes Feist
In most theoretical descriptions of collective strong coupling of organic molecules to a cavity mode, the molecules are modeled as simple two-level systems. This picture fails to d…
Entanglement over the rainbow
Giovanni Ramírez, Javier Rodríguez-Laguna, Germán Sierra
In one dimension the area law for the entanglement entropy is violated maximally by the ground state of a strong inhomogeneous spin chain, the so called concentric singlet phase (C…