Exploració per tema "Quantum optics"

Ara es mostren els items 84-93 de 93

    • The solar cell efficiency improvement with the organic concentrator 

      Vasic, Bojana (Universitat Politècnica de Catalunya, 2011-09-08)
      Projecte Final de Màster Oficial
      Accés obert
      English: The Organic Concentrator is considered one of the most efficient methods in attempt to provide lower costs of solar cells and photovoltaic power. In this experiment, our main goal was to improve the initial ...

    • Transformation Optics in Coupled Waveguides 

      Kumar, Shubham (Universitat Politècnica de Catalunya / Universitat Autònoma de Barcelona, 2011-09-08)
      Projecte Final de Màster Oficial
      Accés obert
      English: The technique of transformation optics is applied to a system of three coupled waveguides undergoing adiabatic passage of a light beam. We show that it is possible, by applying different transformations to different ...

    • Tuning long-range fermion-mediated interactions in cold-atom quantum simulators 

      Argüello Luengo, Javier; González-Tudela, Alejandro; González-Cuadra, Daniel (American Institute of Physics (AIP), 2022-08-17)
      Article
      Accés obert
      Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Fermionic atoms in ultracold atomic mixtures can act as mediators, giving rise to long-range Ruderman-Kit ...

    • Ultra-long quantum walks via spin–orbit photonics 

      Di Colandrea, Francesco; Babazadeh, Amin; Dauphin, Alexandre; Massignan, Pietro Alberto; Marrucci, Lorenzo; Cardano, Filippo (Optical Society of American (OSA), 2023-03-01)
      Article
      Accés obert
      The possibility of fine-tuning the couplings between optical modes is a key requirement in pho- tonic circuits for quantum simulations. In these architectures, emulating the long-time evolution of particles across large ...

    • Ultranarrow Faraday rotation filter for creating narrowband atom-resonant entangled photon pairs 

      Zielińska, Joanna Ada (Universitat Politècnica de Catalunya, 2013-07-19)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] We describe experimental results on a novel optical filter based on the FADOF (Faraday Anomalous Dispersion Optical Filter) principle, and its application to production of atom-resonant entangled photon pairs at ...

    • Universality of the unitary Fermi gas: A few-body perspective 

      Levinsen, Jesper; Massignan, Pietro Alberto; Endo, Shimpei; Parish, Meera M (2017)
      Article
      Accés obert
      We revisit the properties of the two-component Fermi gas with short-range interactions in three dimensions, in the limit where the s -wave scattering length diverges. Such a unitary Fermi gas pos- sesses universal thermodynamic ...

    • Variational quantum cloning on a quantum photonic processor 

      Nicolau Orell, Sebastià (Universitat Politècnica de Catalunya, 2021-07-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Sorbonne Université
      The Variational Quantum Cloning algorithm uses machine learning to obtain through optimization a circuit capable of generating approximate clones from unknown input quantum states. We adapt this algorithm to a boson sampling ...

    • Velocity Filtering via Adiabatic Passage for subnanometer atom localization 

      Rubio López, Juan Luis (Universitat Politècnica de Catalunya / Universitat Autònoma de Barcelona, 2011-09-08)
      Projecte Final de Màster Oficial
      Accés obert
      English: A novel technique named Velocity Filtering via Adiabatic Passage (VFAP) is proposed and theoretically investigated to reduce the transverse velocity of an atomic beam. The role of the Doppler effect and the transfer ...

    • Weak measurements with orbital-angular-momentum pointer states 

      Puentes, G.; Hermosa, N.; Pérez Torres, Juan (2012-07-24)
      Article
      Accés obert
      Weak measurements are a unique tool for accessing information about weakly interacting quantum systems with minimal back action. Joint weak measurements of single-particle operators with pointer states characterized by ...

    • Weak value amplification and Hong Ou Mandel effects for quantum sensing 

      Migó Lluis, Anna (Universitat Politècnica de Catalunya, 2021-07-13)
      Treball Final de Grau
      Accés obert
      The use of new states of light (quantum sensing and quantum imaging) has opened the door to new protocols for parameter estimation with enhanced resolution. In this project we study two techniques that allow increasing the ...