Now showing items 12-31 of 33

    • Fisher Information, Weak Values and Correlated Noise in Interferometry 

      Carrasco, Sergio; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (Cornell University, 2019-02-25)
      In this article we present an experimental proposal for quantum enhanced estimation of optomechanical parameters. The precision of the estimation is improved by using the technique of weak value amplification, which can ...
    • Ground-state cooling of a nanomechanical oscillator with N spins 

      Coto, Raúl [Univ Mayor, Santiago, Chile]; Orszag, Miguel [Univ Mayor, Santiago, Chile]; Montenegro, Victor; Eremeev, Vitalie (AMER PHYSICAL SOC, 2018)
      It is typical of modern quantum technologies employing nanomechanical oscillators to demand few mechanical quantum excitations, for instance, to prolong coherence times of a particular task or to engineer a specific ...
    • Highly efficient cooling of mechanical resonator with square pulse drives 

      He, Bing [Univ Mayor, Ctr Quantum Opt & Quantum Informat, Camino Piramide 5750, Huechuraba, Chile]; Lin, Qing (OPTICAL SOC AMER, 2018)
      Ground state cooling of mechanical resonator is a way to generate macroscopic quantum states. Here we present a study of optomechanical cooling under the drive of square pulses without smooth profile. By illustrating the ...
    • Influence of squeezing on the weak-to-strong measurement transition 

      Araya-Sossa, Kevin; Orszag, Miguel [Univ Mayor, Ctr Opt & Informac Cuant, Chile] (AMER PHYSICAL SOC, 2021-06-11)
      In this work, we study the measurement transition for a coherent squeezed pointer state through a transition factor Gamma that involves a system-pointer coupling by using an arbitrary measured observable A. In addition, ...
    • Macroscopic nonclassical-state preparation via postselection 

      Montenegro V., Eremeev V.; Coto, Raúl [Universidad Mayor, Chile]; Orszag, Miguel [Universidad Mayor, Chile] (American Physical Society, 2017)
      Macroscopic quantum superposition states are fundamental to test the classical-quantum boundary and present suitable candidates for quantum technologies. Although the preparation of such states has already been realized, ...
    • Mechanical oscillations frozen on discrete levels by two optical driving fields 

      He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Lin, Qing; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Xiao, Min (American Physical Society, 2020-07-20)
      We report a synchronization phenomenon which is simulated with an optomechanical system driven by two equally strong fields with different frequencies. Once the frequencies of the driving fields are properly matched, the ...
    • Mutual Information and Quantum Discord in Quantum State Discrimination with a Fixed Rate of Inconclusive Outcomes 

      Jiménez, Omar [Centro de Óptica e Información Cuántica, Facultad de Ciencias, Universidad Mayor, Chile]; Solís-Prosser, Miguel Angel; Neves, Leonardo; Delgado, Aldo (MDPI Multidisciplinary Digital Publishing Institute, 2021-01-6)
      We studied the mutual information and quantum discord that Alice and Bob share when Bob implements a discrimination with a fixed rate of inconclusive outcomes (FRIO) onto two pure non-orthogonal quantum states, generated ...
    • Mutual Information and Quantum Discord in Quantum State Discrimination with a Fixed Rate of Inconclusive Outcomes 

      Solis-Prosser, Miguel Ángel; Neves, Leonardo; Delgado, Aldo; Jimenez, Omar [Univ Mayor, Fac Ciencias, Ctr Opt & Informac Cuant, Chile] (MDPI, 2021-01)
      We studied the mutual information and quantum discord that Alice and Bob share when Bob implements a discrimination with a fixed rate of inconclusive outcomes (FRIO) onto two pure non-orthogonal quantum states, generated ...
    • Nonlinear optomechanical resonance entering a self-organized energy transfer pattern 

      Lin, Qing; Wu, Yi; Li, Gang; He, Bing [Center for Quantum Optics and Quantum Information, Universidad Mayor, Chile] (Chaos, Solitons and Fractals, 2023-08)
      The energy transfer between different subsystems or different vibration modes is always one of the most interested problems in the study of the resonance phenomena in coupled nonlinear dynamical systems. With an optomechanical ...
    • Optical qubit generation via atomic postselection in a Ramsey interferometer 

      Orszag, M. [Univ Mayor, Avda Alonso de Cordova 5495, Santiago, Chile] (IOP PUBLISHING LTD, 2018)
      We propose a realizable experimental scheme to prepare a superposition of the vacuum and one-photon states using a typical cavity QED-setup. This is different from previous schemes, where the superposition state of the ...
    • Optimizing synthetic diamond samples for quantum sensing technologies by tuning the growth temperature 

      Martínez, Lj [Univ Mayor, Ctr Quantum Opt & Quantum Informat]; Chouaieb, S.; Akhtar, W.; Robert-Philip, I; Dreau, A.; Brinza, O.; Achard, J.; Tallaire, A.; Jacques, V (ELSEVIER SCIENCE SA, 2019)
      Control of the crystalline orientation of nitrogen-vacancy (NV) defects in diamond is here demonstrated by tuning the temperature of chemical vapor deposition (CVD) growth on a (113)-oriented diamond substrate. We show ...
    • Phonon maser stimulated by spin postselection 

      Eremeev, Vitalie; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (American Physical Society, 2020-06-09)
      In a sequence of single spins interacting longitudinally with a mechanical oscillator, and using the micromaser model with random injection, we show that after an appropriate postselection of each spin, a phonon laser ...
    • Photon cooling by dispersive atom-field coupling with atomic postselection 

      Oyarce, Felipe; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (Cornell University, 2019-04-16)
      We propose, in a Ramsey interferometer, to cool the cavity field to its ground state, starting from a thermal distribution by a dispersive atom-field coupling followed by an atomic postselection. We also analyze the effect ...
    • PT-symmetric phonon laser under gain saturation effect 

      Xie, Yi Fei; Cao, Zhen; He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Qing, Lin (The Optical Society, 2020-07-20)
      As an analog of optical laser, phonon laser has potential applications in various areas. We study a type of phonon laser implemented by two coupled micro-cavities, one of which carries optical gain medium. The phonon laser ...
    • Quantifying phonon-induced non-Markovianity in color centers in diamond 

      Norambuena, Ariel [Univ Mayor, Fac Ciencias, Ctr Opt & Informac Cuant, Santiago, Chile]; Maze, Jeronimo R.; Rabl, Peter; Coto, Raul (AMER PHYSICAL SOC, 2020)
      We propose the application of a coherence-based measure for non-Markovianity to study the dynamics of color centers in diamond, where the optical coherence between two orbital states is affected by interactions with a ...
    • Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy 

      Jimenez, Omar [Univ Mayor, Fac Ciencias, Ctr Opt & Informac Cuantica]; Angel Solis-Prosser, Miguel; Neves, Leonardo; Delgado, Aldo (MDPI, 2019)
      We study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation. We ...
    • Semi-exact solutions of sextic potential plus a centrifugal term 

      Dong, Qian; Sun, Guo-Hua; He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Dong, Shi-Hai (SPRINGER, 2020-11)
      We revisit the one-dimensional quantum system of a sextic potential added with a centrifugal term, V(x)=ax(-2)+bx(2)+cx(4)+dx(6), where the parameters a,b,c and d are arbitrary. We find that its solutions can be expressed ...
    • Stimulated Raman adiabatic control of a nuclear spin in diamond 

      Jacques V., Hétet G., Maze J.R.; Coto, Raúl [Centro de Física y Nanotecnología, Facultad de Ciencias, Universidad Mayor, Chile] (American Physical Society, 2017)
      Coherent manipulation of nuclear spins is a highly desirable tool for both quantum metrology and quantum computation. However, most of the current techniques to control nuclear spins lack fast speed, impairing their ...
    • Storage and retrieval of interacting photons in a Rydberg medium 

      He, Bing [Univ Mayor, Ctr Quantum Opt & Quantum Informat]; Yang, Liu; Xiao, Min (AMER PHYSICAL SOC, 2019)
      Storing interacting photons in ensembles of highly excited Rydberg atoms makes it possible to realize photon-photon gates. The efficiency of stopping and retrieving pairs of single-photon pulses in any Rydberg medium is, ...
    • The power of a control qubit in weak measurements 

      Montenegro V., Eremeev V., Mundarain D., Orszag M.; Coto, Raúl [Universidad Mayor, Chile] (NATURE PUBLISHING GROUP, 2017)
      In the late 80 s, a curious effect suggested by Aharanov et al. was found to lead to an anomalous amplification based on quantum measurements of weakly coupled systems. In this paper, we investigate the quantum control of ...


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