A Systems Theory Approach to the Synthesis of Minimum Noise Phase-Insensitive Quantum Amplifiers

We present a systems theory approach to the proof of a result bounding the required level of added quantum noise in a phase-insensitive quantum amplifier. We also present a synthesis procedure for constructing a quantum optical phase-insensitive quantum amplifier which adds the minimum level of quantum noise and achieves a required gain and bandwidth. This synthesis procedure is based on a singularly perturbed quantum system and leads to an amplifier involving two squeezers and two beamsplitters.Comment: To appear in the Proceedings of the 2018 European Control Conferenc

Quantum filtering for multiple input multiple output systems driven by arbitrary zero-mean jointly Gaussian input fields

In this paper, we treat the quantum filtering problem for multiple input multiple output (MIMO) Markovian open quantum systems coupled to multiple boson fields in an arbitrary zero-mean jointly Gaussian state, using the reference probability approach formulated by Bouten and van Handel as a quantum version of a well-known method of the same name from classical nonlinear filtering theory, and exploiting the generalized Araki-Woods representation of Gough. This includes Gaussian field states such as vacuum, squeezed vacuum, thermal, and squeezed thermal states as special cases. The contribution is a derivation of the general quantum filtering equation (or stochastic master equation as they are known in the quantum optics community) in the full MIMO setup for any zero-mean jointy Gaussian input field states, up to some mild rank assumptions on certain matrices relating to the measurement vector.Comment: 19 pages, no figures. Published in a special issue of the Russian Journal of Mathematical Physics dedicated to the memory of Slava Belavki

Implementasi Kebijakan Pembagian Kewenangan Dalam Mengelola Izin Usaha Pertambangan (Studi Kasus Di Kabupaten Aceh Singkil)

This study aims at analyzing the implementation of authorization policies and its impact, in relation to managing the mining licences in Aceh Singkil. This study is qualitative, which produces outcomes such as descriptive data in the form of written documents, oral information, and images or photos. Data were gathered by interview, observation, and document review. The policies aspects which were studied were communication, resources, disposition, and structure. The study was focused on the internal impact within the Government of Aceh Singkil. The problem was that implementing the policy were overlapping between Central, Provincial and District Governments making it difficult to implement the policies and had less of a substantial impact on the stakeholders. This study focused on the implementation of authorization policies as an impact, regarding the mining licences authorization in Aceh Singkil and did not discuss in detail about the policy itself. This study showed that the authorization of mining license was delegated by the government of Aceh Singkil to the Singkil District Sekratariat (Setdakab) and the Office of One Stop Licence Service (KP2TSP). While actually in exercising mining deconcentration authority the Aceh Provincial Government which authority was forwarded from the Ministry of Mines and Energy had delegated it to the Mining and Energy Office of the Aceh Province. Other findings related to the Government of Aceh Singkil was the proposal to create a new city of Subbulusalam within Aceh Singkil to improve services and reduce personnel and assets

Penggunaan Lahan Kering di DAS Limboto Provinsi Gorontalo untuk Pertanian Berkelanjutan

Lahan kering merupakan salah satu agroekosistem yang berpotensi besar untuk USAha pertanian. Daerah aliransungai (DAS) Limboto mempunyai lahan kering yang sesuai untuk pengembangan pertanian seluas 37.049 ha,sedangkan lahan datar sampai bergelombang yang potensial untuk pertanian 33.144 ha. Untuk memanfaatkanlahan kering tersebut, dapat diterapkan beberapa strategi dan teknologi yang meliputi: 1) pengelolaan sistem budidaya, yang mencakup pengelompokan tanaman dalam suatu bentang lahan mengikuti kebutuhan air yang sama,penentuan pola tanam yang tepat, pemberian mulsa dan bahan organik, pembuatan pemecah angin, dan penerapansistem agroforestry, 2) pengembangan ekonomi, sosial, dan budaya melalui penyuluhan, penyediaan sarana danprasarana produksi serta permodalan petani, pemberdayaan kelembagaan petani dan penyuluh, serta penerapansistem agribisnis, dan 3) implementasi kebijakan yang berpihak kepada pertanian, yang meliputi pemberian subsidikepada petani di daerah hulu untuk melaksanakan konservasi lahan, pemberian subsidi pajak kepada petani didaerah hulu, penetapan peraturan daerah yang berkaitan dengan pengelolaan lahan berbasis konservasi, danpengelolaan lahan dengan sistem hak guna USAha (HGU). Hal lain yang terpenting dalam pemanfaatan lahan keringadalah sinkronisasi dan koordinasi antarinstitusi pemerintah dengan melibatkan petani untuk menghindari tumpangtindih kepentingan

Land Suitability Assessment for Maize Development in Dulamayo Garden Farming of Gorontalo Regency

The aimed of this research was to determining of upland suitability for maize commodity development and its limiting factors based on land quality. This research conducted at three month in Dulamayo garden farming of Gorontalo State University. Assessments of land suitability classes using the framework of land evaluation and parametric approach with root square land index as methods. The result of this research showed that the land suitability classes showed that land utilization type (LUT) for Local Maize of patterns A (none fertilizing) + B (national fertilizing dosage) were dominantly of moderately suitable with nutrient availability as limiting factors (S2na), while for pattern C (prescription fertilizing dosage) was very suitable but any small amount of nutrient availability as limiting factors (S1na). The LUT Composite Maize to pattern A was marginally suitable with nutrient availability as limiting factors (S3na), pattern B same as LUT Local Maize limiting factors, but pattern C with very suitable classes but differences of limiting factors (S1wa). For LUT Hybrids Maize dominantly of marginally suitable with water availability as limiting factors (S3wa) to pattern A+B, but pattern C dominantly of moderately suitable with water availability as limiting factors (S2wa)

Pengaruh Minat Baca, Pemanfaatan Fasilitas dan Sumber Belajar terhadap Prestasi Belajar IPS Terpadu SMP Negeri 13 Bandar Lampung

Penelitian ini bertujuan untuk mengetahui pengaruh minat baca, pemanfaatan fasilitas belajar, dan pemanfaatan sumber belajar terhadap prestasi belajar IPS Terpadu siswa kelas VIII SMP Negeri 13 Bandar Lampung tahun pelajaran 2009/2010. Metode yang digunakan di dalam penelitian ini adalah penelitian verifikatif dengan pendekatan ex post facto. Pengujian untuk hipotesis 1 dan 2 menggunakan uji t dan hipotesis 3 menggunakan uji F. Berdasarkan analisis data diperoleh hasil penelitian yang menunjukkan bahwa ada pengaruh minat baca, pemanfaatan fasilitas belajar, dan pemanfaatan sumber belajar terhadap prestasi belajar IPS Terpadu siswa kelas VIII SMP Negeri 13 Bandar Lampung tahun pelajaran 2009/2010. Hal ini ditunjukan dengan uji F yang menunjukkan bahwa Fhitung > F¬tabel yaitu 51,913 > 2,864 yang berarti prestasi belajar IPS Terpadu dipengaruhi oleh minat baca, pemanfaatan fasilitas belajar, dan pemanfaatan sumber belaja