A. Cidrim

University of Colorado Boulder

Physical systemPhysicsStatistical physicsModulational instabilityKinetic energyVortexWave turbulenceComponent (thermodynamics)DipoleQuantum fluidExcited stateIsotropyAtomic physicsLiquid heliumField (physics)TurbulenceSuperfluidityCondensed matter physicsTwistQuantum turbulenceVortex stateQuantized vorticesQuantum electrodynamicsBose–Einstein condensateHomonuclear moleculeMolecular physicsMomentumQuantum mechanicsFeynman diagramKelvin waveParticle numberClassical mechanicsQuantumSolitonAutocatalytic reaction

21Publications

5H-index

191Citations

Publications 17

Newest

#1Alan C. SantosH-Index: 12

#2A. CidrimH-Index: 5

Last. Romain BachelardH-Index: 15

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Considering the paradigmatic case of a cloud of two-level atoms interacting through common vacuum modes, we show how cooperative spontaneous emission, which is at the origin of superradiance, leads the system to long-lived entangled states at late times. These subradiant modes are characterized by an entanglement between all particles, independently of their geometrical configuration. While there is no threshold on the interaction strength necessary to entangle all particles, stronger interactio...

#1Arnol Daniel García-OrozcoH-Index: 3

#2Lucas MadeiraH-Index: 7

Last. Vanderlei Salvador BagnatoH-Index: 64

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We study the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, parametrically driven to a turbulent state. We demonstrate that the out-of-equilibrium dynamics post excitation is described by a single function due to nearby non-thermal fixed points. The observed behavior connects the dynamics of a quantum turbulent state to several far-from-equilibrium phenomena. We present a controllable protocol to exp...

#1A. CidrimH-Index: 5

#2A. Piñeiro OrioliH-Index: 2

Last. Ana Maria ReyH-Index: 62

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Dipole-dipole interactions lead to frequency shifts that are expected to limit the performance of next-generation atomic clocks. In this work, we compute dipolar frequency shifts accounting for the intrinsic atomic multilevel structure in standard Ramsey spectroscopy. When interrogating the transitions featuring the smallest Clebsch-Gordan coefficients, we find that a simplified two-level treatment becomes inappropriate, even in the presence of large Zeeman shifts. For these cases, we show a net...

#1A. CidrimH-Index: 5

#2Luca SalasnichH-Index: 37

Last. Tommaso MacrìH-Index: 17

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We investigate the quench dynamics of a two-component Bose mixture and study the onset of modulational instability, which leads the system far from equilibrium. Analogous to the single-component counterpart, this phenomenon results in the creation of trains of bright solitons. We provide an analytical estimate of the number of solitons at long times after the quench for each of the two components based on the most unstable mode of the Bogoliubov spectrum, which agrees well with our simulations f...

#1Lucas Madeira (USP: University of São Paulo)H-Index: 7

#2A. Cidrim (UFSCar: Federal University of São Carlos)H-Index: 5

Last. Vanderlei Salvador Bagnato (USP: University of São Paulo)H-Index: 64

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The field of quantum turbulence is related to the manifestation of turbulence in quantum fluids, such as liquid helium and ultracold gases. The concept of turbulence in quantum systems was conceived more than 70 years ago by Onsager and Feynman, but the study of turbulent ultracold gases is very recent. Although it is a young field, it already provides new approaches to the problem of turbulence. The authors review the advances and present status, of both theory and experiments, concerning atomi...

#1A. CidrimH-Index: 5

#2T. S. do Espirito SantoH-Index: 4

Last. Romain BachelardH-Index: 15

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We show that induced dipole-dipole interactions allow for photon blockade in subwavelength ensembles of two-level, ground-state neutral atoms. Our protocol relies on the energy shift of the single-excitation, superradiant state of Natoms, which can be engineered to yield an effective two-level system. A coherent pump induces Rabi oscillation between the ground state and a collective bright state, with at most a single excitation shared among all atoms. The possibility of using clock transitio...

#1Áttis V. M. MarinoH-Index: 1

#2Lucas Madeira (USP: University of São Paulo)H-Index: 7

Last. Vanderlei Salvador BagnatoH-Index: 64

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The decay of multicharged vortices in trapped Bose-Einstein condensates may lead to a disordered vortex state consistent with the Vinen regime of turbulence, characterized by an absence of large-scale flow and an incompressible kinetic energy spectrum E\propto k^{-1} In this work, we study numerically the dynamics of a three-dimensional harmonically trapped Bose-Einstein condensate excited to a Vinen regime of turbulence through the decay of two doubly-charged vortices. First, we study the mo...

#1A. CidrimH-Index: 5

#2Tommaso MacrìH-Index: 17

Last. Romain BachelardH-Index: 15

view all 4 authors...

#1A. CidrimH-Index: 5

#2Francisco Ednilson Alves dos Santos (UFSCar: Federal University of São Carlos)H-Index: 4

Last. Tommaso MacrìH-Index: 17

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Quantized vortices have been observed in a variety of superfluid systems, from ^4e to Bose-Einstein condensates and ultracold Fermi gases along the BEC-BCS crossover. In this article we study the stability of singly quantized vortex lines in dilute dipolar self-bound droplets. We first discuss the energetic stability region of dipolar vortex excitations within a variational ansatz in the generalized nonlocal Gross-Pitaevskii functional that includes quantum fluctuation corrections. We find a ...

#1A. CidrimH-Index: 5

#2Angela WhiteH-Index: 11

Last. Carlo F. BarenghiH-Index: 53

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We investigate a procedure to generate turbulence in a trapped Bose-Einstein condensate which takes advantage of the decay of multicharged vortices. We show that the resulting singly-charged vortices twist around each other, intertwined in the shape of helical Kelvin waves, which collide and undergo vortex reconnections, creating a disordered vortex state. By examining the velocity statistics, the energy spectrum, the correlation functions and the temporal decay, and comparing these properties w...

Close Researchers

Vanderlei Salvador Bagnato

H-index : 64

Carlo F. Barenghi

H-index : 53

F.E.A. dos Santos

H-index : 4

A. R. Fritsch

H-index : 4

P. E. S. Tavares

H-index : 6

Tommaso Macrì

H-index : 17

F. E. A. dos Santos

H-index : 7

Lucas Madeira

H-index : 7

Angela White

H-index : 11

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