Interferences between Bogoliubov excitations and their impact on the evidence of superfluidity in a paraxial fluid of light

• URL: http://arxiv.org/abs/2005.14328v2
• Date: Wed, 3 Jun 2020 08:23:37 GMT
• Title: Interferences between Bogoliubov excitations and their impact on the evidence of superfluidity in a paraxial fluid of light
• Authors: Quentin Fontaine, Pierre-Elie Larr\'e, Giovanni Lerario, Tom Bienaim\'e, Simon Pigeon, Daniele Faccio, Iacopo Carusotto, Elisabeth Giacobino, Alberto Bramati, and Quentin Glorieux
• Abstract summary: Paraxial fluids of light are an alternative platform to atomic Bose-Einstein condensates and superfluid liquids. We show that interferences between the phonon excitations that would be a clear signature of the collective superfluid behaviour have not been observed to date. Results are evidence of a key signature of light superfluidity and provide a novel characterization tool for quantum simulations with photons.
• Score: 0.8336477625900557
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Paraxial fluids of light represent an alternative platform to atomic Bose-Einstein condensates and superfluid liquids for the study of the quantum behaviour of collective excitations. A key step in this direction is the precise characterization of the Bogoliubov dispersion relation, as recently shown in two experiments. However, the predicted interferences between the phonon excitations that would be a clear signature of the collective superfluid behaviour have not been observed to date. Here, by analytically, numerically, and experimentally exploring the phonon phase-velocity, we observe the presence of interferences between counter-propagating Bogoliubov excitations and demonstrate their critical impact on the measurement of the dispersion relation. These results are evidence of a key signature of light superfluidity and provide a novel characterization tool for quantum simulations with photons.

Related papers

• Dispersive shock waves in a one-dimensional droplet-bearing environment [7.370081795303041]
  We demonstrate the controllable generation of distinct types of dispersive shock-waves emerging in a quantum droplet bearing environment. Surprisingly, dispersive shock waves persist across the hyperbolic-to-elliptic threshold. A plethora of additional wave patterns arise, such as rarefaction waves, traveling dispersive shock waves, (anti)kinks and droplet wavetrains.
  arXiv  Detail & Related papers  (2024-04-03T18:39:57Z)
• Observation of vortices in a dipolar supersolid [0.0]
  Supersolids are states of matter that spontaneously break two continuous symmetries. Our work reveals a fundamental difference in vortex seeding dynamics between unmodulated and modulated quantum fluids.
  arXiv  Detail & Related papers  (2024-03-27T12:39:50Z)
• Suppression of Bogoliubov momentum pairing and emergence of non-Gaussian correlations in ultracold interacting Bose gases [0.0]
  Strongly correlated quantum matter possesses properties that cannot be understood in terms of linear fluctuations and free quasi-particles. Quantum fluctuations in these systems are indeed large and generically exhibit non-Gaussian statistics. We experimentally study interacting Bose gases from the weakly to the strongly interacting regime through single-atom-resolved correlations in momentum space.
  arXiv  Detail & Related papers  (2024-01-27T08:17:15Z)
• Lattice-induced wavefunction effects on trapped superfluids [0.0]
  We propose gauge-independent tensors describing Bloch wavefunction effects on local interaction between correlated particles. We derive an effective hydrodynamic theory for ultracold bosons in optical lattices. Our discovery advances the connections between the modern band theory and quantum many-body physics.
  arXiv  Detail & Related papers  (2024-01-25T08:04:47Z)
• Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory [58.720142291102135]
  Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials. We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model. We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
  arXiv  Detail & Related papers  (2023-07-21T18:00:07Z)
• Helical superfluid in a frustrated honeycomb Bose-Hubbard model [1.5197843979051469]
  We study a "helical" superfluid, a nonzero-momentum condensate in a frustrated bosonic model. At mean-field Bogoliubov level, such a novel state exhibits "smectic" fluctuation that are qualitatively stronger than that of a conventional superfluid.
  arXiv  Detail & Related papers  (2022-05-31T18:00:01Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Observation-dependent suppression and enhancement of two-photon coincidences by tailored losses [68.8204255655161]
  Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter. In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement. Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
  arXiv  Detail & Related papers  (2021-05-12T06:47:35Z)
• Towards probing for hypercomplex quantum mechanics in a waveguide interferometer [55.41644538483948]
  We experimentally investigate the suitability of a multi-path waveguide interferometer with mechanical shutters for performing a test for hypercomplex quantum mechanics. We systematically analyse the influence of experimental imperfections that could lead to a false-positive test result.
  arXiv  Detail & Related papers  (2021-04-23T13:20:07Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Entanglement dynamics in dissipative photonic Mott insulators [62.997667081978825]
  In spite of particle losses the quantum entanglement propagation exhibits a ballistic character with propagation speeds related to the differerent quasiparticles that are involved in the dynamics. Our analysis reveals that photon dissipation has a strikingly asymmetric behavior in the two configurations with a much more dramatic role on the holon entanglement propagation than for the doublon case.
  arXiv  Detail & Related papers  (2020-04-27T15:48:24Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.