6,406 research outputs found
Bell states and entanglement of two-dimensional polar molecules in electric fields
Entanglement generated from polar molecules of two-dimensional rotation is
investigated in a static electric field. The electric field modulates the
rotational properties of molecules, leading to distinctive entanglement. The
concurrence is used to estimate the degree of entanglement. When the electric
field is applied parallel or perpendicular to the intermolecular direction, the
concurrences reveal two overlapping features. Such a pronounced signature
corresponds to the coexistence of all Bell-like states. The characteristics of
Bell-like states and overlapping concurrences are kept independent of the
modulation of dipole-field and dipole-dipole interactions. On the contrary, the
Bell-like states fail to coexist in other field directions, reflecting
nonoverlapping concurrences. Furthermore, the thermal effect on the
entanglement is analyzed for the Bell-like states. Dissimilar suppressed
concurrences occur due to different energy structures for the two specific
field directions.Comment: 6 pages, 7 figure
Generation of short hard X-ray pulses of tailored duration using a M\"ossbauer source
We theoretically investigate a scheme for generations of single hard X-ray
pulses of controllable duration in the range of 1 ns - 100 ns from a
radioactive M\"ossbauer source. The scheme uses a magnetically perturbed
FeBO crystal illuminated with recoilless 14.4 keV photons from a
radioisotope Co nuclide. Such compact X-ray source is useful for the
extension of quantum optics to 10 keV energy scale which has been spotlighted
in recent years. So far, experimental achievements are mostly performed in
synchrotron radiation facilities. However, tabletop and portable hard X-ray
sources are still limited for time-resolved measurements and for implementing
coherent controls over nuclear quantum optics systems. The availability of
compact hard X-ray sources may become the engine to apply schemes of quantum
information down to the subatomic scale. We demonstrate that the present method
is versatile and provides an economic solution utilizing a M\"ossbauer source
to perform time-resolved nuclear scattering, to produce suitable pulses for
photon storage and to flexibly generate X-ray single-photon entanglement.Comment: 8 pages, 6 figure
Triplet-based Deep Similarity Learning for Person Re-Identification
In recent years, person re-identification (re-id) catches great attention in
both computer vision community and industry. In this paper, we propose a new
framework for person re-identification with a triplet-based deep similarity
learning using convolutional neural networks (CNNs). The network is trained
with triplet input: two of them have the same class labels and the other one is
different. It aims to learn the deep feature representation, with which the
distance within the same class is decreased, while the distance between the
different classes is increased as much as possible. Moreover, we trained the
model jointly on six different datasets, which differs from common practice -
one model is just trained on one dataset and tested also on the same one.
However, the enormous number of possible triplet data among the large number of
training samples makes the training impossible. To address this challenge, a
double-sampling scheme is proposed to generate triplets of images as effective
as possible. The proposed framework is evaluated on several benchmark datasets.
The experimental results show that, our method is effective for the task of
person re-identification and it is comparable or even outperforms the
state-of-the-art methods.Comment: ICCV Workshops 201
The Reaction of a Water Soluble Platinum Compound with Methionine and Derivatives
Water soluble platinum complexes are a recent area of emphasis of cisplatin chemistry. The water soluble complexes could have a reduced toxicity compared with cisplatin. Oxaliplatin, which has an oxalate leaving group, has previously been shown to have less nephro-toxicity and higher water solubility than cisplatin. [Pt(en)(oxalate)] (en = ethylenediamine) has been prepared from Pt(en)Cl2 and silver oxalate. This complex has been reacted with methionine and N-acetylmethionine at different molar ratios. At high Pt: methionine ratios, chelates with the sulfur and nitrogen atoms of the methionine are dominant; at lower Pt: methionine ratios, a bis-methionine product is formed. The en ligand is displaced by methionine but not N-acetylmethionine
A Mechanism of Transferring Manufacturing Competences to Increase Market Performance
This study uses competence transferring theory to establish a mechanism for transferring competence from the outside of an organization. Data were collected in the US from over 300 manufacturing companies. The mechanism of competence transferring is empirically supported. Also, the transferred competences increase manufacturing process competences including process automation, process integration, and process modularity. Furthermore, the process competences lead to higher market performance of firms
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