1,738 research outputs found
Generation of Atomic Cluster States through the Cavity Input-Output Process
We propose a scheme to implement a two-qubit controlled-phase gate for single
atomic qubits, which works in principle with nearly ideal success probability
and fidelity. Our scheme is based on the cavity input-output process and the
single photon polarization measurement. We show that, even with the practical
imperfections such as atomic spontaneous emission, weak atom-cavity coupling,
violation of the Lamb-Dicke condition, cavity photon loss, and detection
inefficiency, the proposed gate is feasible for generation of a cluster state
in that it meets the scalability criterion and it operates in a conclusive
manner. We demonstrate a simple and efficient process to generate a cluster
state with our high probabilistic entangling gate
The contribution of molecular interaction potentials to properties and activities of ionic liquid ions in solution
Ionic liquids (ILs) have attracted significant interest due to their beneficial and tuneable physicochemical properties. To experimentally identify the IL structure(s) most suited for a certain technical purpose with no adverse effects to man and the environment, it would result in a nearly insurmountable number of trial and error experiments. Therefore, it is essential to understand their molecular interaction potentials. Thus, experiments were carried out with high performance liquids chromatography to estimate the molecular interaction potentials of 30 cations and 20 anions. An in silico method, i.e. COSMO-calculation, was employed to calculate the descriptors for more conventional and easily accessible approaches. Then using the measured and calculated molecular interaction potentials, it was established prediction models for the physicochemical and biological property of ILs in various environments
Controlled Unitary Operation between Two Distant Atoms
We propose a scheme for implementing a controlled unitary gate between two
distant atoms directly communicating through a quantum transmission line. To
achieve our goal, only a series of several coherent pulses are applied to the
atoms. Our scheme thus requires no ancilla atomic qubit. The simplicity of our
scheme may significantly improve the scalability of quantum computers based on
trapped neutral atoms or ions
Variational Deep Image Restoration
This paper presents a new variational inference framework for image
restoration and a convolutional neural network (CNN) structure that can solve
the restoration problems described by the proposed framework. Earlier CNN-based
image restoration methods primarily focused on network architecture design or
training strategy with non-blind scenarios where the degradation models are
known or assumed. For a step closer to real-world applications, CNNs are also
blindly trained with the whole dataset, including diverse degradations.
However, the conditional distribution of a high-quality image given a diversely
degraded one is too complicated to be learned by a single CNN. Therefore, there
have also been some methods that provide additional prior information to train
a CNN. Unlike previous approaches, we focus more on the objective of
restoration based on the Bayesian perspective and how to reformulate the
objective. Specifically, our method relaxes the original posterior inference
problem to better manageable sub-problems and thus behaves like a
divide-and-conquer scheme. As a result, the proposed framework boosts the
performance of several restoration problems compared to the previous ones.
Specifically, our method delivers state-of-the-art performance on Gaussian
denoising, real-world noise reduction, blind image super-resolution, and JPEG
compression artifacts reduction.Comment: IEEE Transactions on Image Processing (TIP 2022
DEVELOPMENT OF A K-NN MODEL TO PREDICT THE POLARITY OF KOREAN GAME REVIEW COMMENTS
The purpose of this paper is to develop the machine learning model to evaluate game software in quantitative scale using opinion mining with the review comments which are provided by users in Korean. To do this, we first decompose the review comments into a lot of meaningful morphemes, and second construct a dictionary for opinion mining. Third, we develop a k-NN model to predict the polarity of review comment. Finally, we predict the polarity for each review comment which is included in validation data set by the model. The experimental results of the developed model are performed by the model which is implemented by JAVA and R language
- …