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MA         Dr. Miguel Ángel García-March
  
   Research Fellow
   ICFO – The Institute of Photonic Sciences
   Mediterranean Technology Park EPJD Distinguished referee 2015
   Av. Carl Friedrich Gauss, 3
   08860 Castelldefels (Barcelona), Spain
   Tel.: (+34) 93 553 4002
   Fax: (+34) 93 553 4000
   email: ga
rciamarchma@gmail.com
   email: Miguel.Garcia-March@icfo.eu

  
   Previous position:
   Postdoctoral Researcher   EPJD distinguished referee 2016
   Dept. d'Estructura i Constituents de la Matèria
   Facultat de Física

   Universitat de Barcelona
  

  


Recent papers
Selected Papers

Miscellany



 

Recent Papers

 
f4We introduced a model in which a particle performs continuous Brownian motion with changes of diffusion coefficients induced by transient molecular interactions with diffusive binding partners. The model shows subdiffusion and nonergodicity similar to the heavy-tailed continuous time random walk. These properties depend on the density of binding partners. This model provides an experimentally testable microscopic model to investigate the nature of nonergodicity in disordered media. PRE 95 032403


f5We applied the framework of non-equilibrium quantum thermodynamics to the physics of quenched small-sized bosonic quantum gases in a one-dimensional harmonic trap. We showed that dynamical orthogonality can occur in these few-body systems with strong interactions after a quench. We established a clear qualitative link between the amount of (irreversible) work performed on the system and the establishment of entanglement. NJP 18 103035



jphysbWe proposed a novel procedure to solve the Schrödinger equation with the initial condition being a multi-singular vortex Gaussian beam. This procedure permits to find the trajectories of the singularities by solving an algebraic equation. Thus it represents a new strategy to investigate vortex knots and loops in singular optics with analytical tools. J. Opt. 18 064006

 

jphysbWe analyzed the entanglement of an impurity with a small ultracold bosonic gas in a parabollic trap. We vary the repulsive contact interactions and the relative mass between the two species. We found that there exist a critical mass for which the entanglement has a peak. For larger values of the mass of the impurity, it localizes in the centre of the trap. JphysB 49 075303


f4We analyzed the role of impurities in the fractional quantum Hall effect using a highly controllable system of ultracold atoms. We investigate the mechanism responsible for the formation of plateaux in the resistivity as a function of the applied magnetic field in the lowest Landau level regime. NJP 17 125009

f4f5We demonstrated that superpositions of Tonks-Girardeau gases can exist in a double well. We reconciled the existence of such states with the predictions from the Bose-Fermi mapping theorem. PRA 92 033621


f4We proposed a technique to generate macroscopic superposition states of vortices with ultracold bosons in a 3D double well. The distinguishable macroscopic property in these superpositions is associated with the angular properties of the vortices. PRA 91 033626

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Selected papers


f5 We proved that the charge of a discrete vortex soliton in a discrete symmetric system presents a cut-off, when the vortex has only one singularity. PRL 95 043901  



f5 We showed how a highly charged vortex can be transformed into a vortex with the opposed sign of the phase singularity by means of a discrete symmetric system. PRL 95 123901




f5 We showed how macroscopic superpositions of ultracold bosons can be obtained in tilted double wells dynamically. EPL 90 10005 




f4f5We studied a small mixture of bosons in a 1D trap when one of the species is kept non-interacting while all other repulsive interactions are tuned from zero to infinity.  NJP 16 103004



f6We studied a bosonic mixture in a 1D double well, when the two components are assumed to be two hyperfine internal states of the same atom that are spin-orbit coupled. We disentangle different Josephson scenarios, which are associated on how the interactions compare with the different transfer and tunneling processes in the system, giving rise to internal, external, and mixed Josephson effects. PRA 89 063607 



f4f5 We studied the dynamics of two strongly interacting bosons when the interactions with an impurity are suddenly quenched. We found that, even in such a small system, evidence of Anderson's orthogonality catastrophe can be witnessed. PRA 90, 013617  



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Miscellany


f4f5We studied a system of two bosons plus one extra atom, when all repulsive interactions in the system are ranged from zero to infinity. PRA 90 063605

f4f5We studied a sharp crossover that occurs in small mixtures of ultracold bosons in 1D between different strongly interacting regimes. PRA 88 063604



f4f5We studied the phase separation process in few-atom strongly interacting mixtures of ultracold bosons in 1D.  PRA 87 063633   



f4f5 We experimentally illustrated the key role of off-axis singularities in the phenomena of vortex transmutation. Appl. Phys. B  116, 779 See also J. Opt. 15 044014




f6We studied a four-mode  BEC trapped in a 1D double well with a semiclassical model. The additional modes represent two  in-well excited localized  states. PRA 89 023614  



f6We presented the concept of measure synchronization for two coupled quantum many-body systems. We assumed that the coupling is due to contact interactions and showed that it produced quantum measure synchronization, which manifested itself in many-body quantum properties like the condensed fractions and particle fluctuations. To illustrate the concept, we consider two species of bosons in a double well potential. PRA 89 033603



 
f2f3We extended the cut-off theorem to discrete vortex solitons with off-diagonal singularities, and presented some examplary vortex solitons with many singularities.  PRA 79 053820 




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