Papers publicados por CQOQI: Envíos recientes
Mostrando ítems 21-33 de 33
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Breaking the optomechanical cooling limit by two drive fields on a membrane-in-the-middle system
(AMER PHYSICAL SOC, 2019)We present a theoretical scheme for ground-state cooling of a mechanical resonator in a membrane-in-themiddle optomechanical system (OMS) driven by two red-detuned drive fields. The details of dynamical evolution of OMS ... -
Storage and retrieval of interacting photons in a Rydberg medium
(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, ... -
Optimizing synthetic diamond samples for quantum sensing technologies by tuning the growth temperature
(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 ... -
Experimental quantum tomography assisted by multiply symmetric states in higher dimensions
(AMER PHYSICAL SOC, 2019)High-dimensional quantum information processing has become a mature field of research with several different approaches being adopted for the encoding of D-dimensional quantum systems. Such progress has fueled the search ... -
Quantifying phonon-induced non-Markovianity in color centers in diamond
(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 ... -
Effects of gain saturation on the quantum properties of light in a non-Hermitian gain-loss coupler
(AMER PHYSICAL SOC, 2019)Gain saturation is ubiquitous but has not been fully explored in the newly developed field of non-Hermitian optics. On the other hand, the nonclassical properties of light are highly relevant to the gain saturation that ... -
Weak-value amplification of photon-number operators in the optomechanical interaction
(AMER PHYSICAL SOC, 2019)An experimental proposal is presented in which dark port postselection together with weak measurements are used to enlarge the radiation pressure effect of a single photon on a mechanical oscillator placed in the middle ... -
Entangling Two Macroscopic Mechanical Resonators at High Temperature
(AMER PHYSICAL SOC, 2020)At high temperature, thermal decoherence dominates so that the entanglement of quantum states is difficult to preserve. Realizing high-temperature entanglement is, therefore, a challenge to the current quantum technologies. ... -
Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy
(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 ... -
Coherent population trapping with a controlled dissipation: applications in optical metrology
(IOP PUBLISHING LTD, 2018)We analyze the properties of a pulsed coherent population trapping protocol that uses a controlled decay from the excited state in a Lambda-level scheme. We study this problem analytically and numerically and find regimes ... -
Highly efficient cooling of mechanical resonator with square pulse drives
(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 ... -
Ground-state cooling of a nanomechanical oscillator with N spins
(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 ... -
Optical qubit generation via atomic postselection in a Ramsey interferometer
(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 ...