Coherently controlled entanglement generation in a binary Bose-Einstein condensate

Considering a two-component Bose-Einstein condensate in a double-well potential, a method to generate a Bell state consisting of two spatially separated condensates is suggested. For repulsive interactions, the required tunnelling control is achieved numerically by varying the amplitude of a sinusoidal potential difference between the wells. Both numerical and analytical calculations reveal the emergence of a highly entangled mesoscopic state.Comment: 6 pages, 6 figures, epl2.cl

Kadar Protein Makanan Masak, Yang Diperoleh Dari Hasil Perhitungan Dan Analisa

Kadar protein 23 makanan masak ditentukan menurut dua cara. Pertama, dihitung dari kadar protein bahan mentahnya dikalikan angka rasio berat mentah : masak. Kedua, menganalisa kandungan nitrogen makanan masak kemudian mengalikannya dengan 6,25. Ternyata kadar protein hitung lebih tinggi daripada kadar protein hasil analisa langsung. Secara keseluruhan, perbedaan kadar protein hitung dan analisa makanan masak yang diselidiki pukul rata 3,6 gram atau 14%

Pengujian Aktivitas Antibakterial Pada Tempe Terhadap Bakteri Penyebab Diare

Tempe adalah bahan makanan yang sudah populer di Indonesia. Selain sumber zat gizi yang bernilai tinggi, tempe juga diduga mempunyai khasiat lain.Penelitian ini bertujuan untuk mempelajari daya hambat zat antibakterial dalam tempe terhadap beberapa jenis bakteri termasuk bakteri penyebab diare.Pada prinsipnya dalam penelitian ini dipelajari pengaruh penambahan ekstrak tempe terhadap pertumbuhan bakteri. Jenis bakteri penguji diambil dua jenis gram-positif dan empat jenis gram-negatif. Tempe sebagai sumber zat antibakterial, berupa tempe yang dibuat dengan menggunakan Rhizopus oligosporus dalam bentuk biakan murni, USAr dan laru; dua jenis yang terakhir ini dibeli dari pedagang tempe. Pengukuran pertumbuhan bakteri dilakukan dengan menggunakan Spectronic-20, Bausch dan Lomb.Hasil penelitian menunjukkan bahwa dalam tempe yang dibuat dengan biakan murni terdapat zat antibakterial yang dapat menghambat pertumbuhan bakteri.Dihasilkannya zat antibakterial tersebut pada proses fermentasi, sangat dipengaruhi oleh kemurnian jenis kapang dan media tempat pertumbuhan kapang

Penerapan Model Pembelajaran Kooperatif Tipe Group Investigation (Gi) Untuk Meningkatkan Hasil Belajar IPS Siswa Kelas IV Sdn 016 Basilam Baru

, This research represent the Research of Class Action (CAR) conducted to increase result of learning student of class of IV SDN 016 Basilam Baru by applying model the study of co-operative of type of Group Investigation (GI). This Research is conducted at April 2014 executed by 2 is cycle. this Subjek Research is student of class of IV SDN 016 Basilam Baru amounting to 28 one who is made by a data source. Instrument of data collecting of at this research is sheet of activity perception learn and student and also result of learning. Mean of result of learning previous student that is 58,2 from 28 complete student people only 6 completely is klasikal 21,4% while student which is not complete 22 people completely is klasikal 78,6%. At this research is presented by a activity percentage learn and student and also result of daily restating of cycle of I and cycle II. Activity Percentage learn at cycle of I and II is 58,4% mounting to become 79,2%. percentage of student Activity of at cycle of I and II is 52,1% mounting to become 81,3% Mean of result of learning student of at cycle I is 67,5 from 28 student, complete 17 people with the percentage 60,7% and which is not complete 11 people with the percentage 39,3%. Mean of result of learning student of cycle II is 88,5 from 28 one who complete 28 people with the percentage 100%. Inferential thereby that this research hypothesis that is if applied by model of study of co-operative of type of Group Investigation (GI) if can improve the result learn the student of class of IV SDN 016 Basilam Baru is accepted

Quantum Chaos in the Bose-Hubbard model

We present a numerical study of the spectral properties of the 1D Bose-Hubbard model. Unlike the 1D Hubbard model for fermions, this system is found to be non-integrable, and exhibits Wigner-Dyson spectral statistics under suitable conditions.Comment: 4 pages, 4 figure

Creation of macroscopic quantum superposition states by a measurement

We propose a novel protocol for the creation of macroscopic quantum superposition (MQS) states based on a measurement of a non-monotonous function of a quantum collective variable. The main advantage of this protocol is that it does not require switching on and off nonlinear interactions in the system. We predict this protocol to allow the creation of multiatom MQS by measuring the number of atoms coherently outcoupled from a two-component (spinor) Bose-Einstein condensate.Comment: 4 pages (revtex4), 2 figure