Electron Teleportation in Multi-Terminal Majorana Islands: Statistical Transmutation and Fractional Quantum Conductance

We study a topological superconductor island with spatially separated Majorana modes coupled to multiple normal metal leads by single electron tunneling in the Coulomb blockade regime. We show that low-temperature transport in such Majorana island is carried by an emergent charge-$e$ boson composed of a Majorana mode and an electron from the leads. This transmutation from Fermi to Bose statistics has remarkable consequences. For noninteracting leads, the system flows to a non-Fermi liquid fixed point, which is stable against tunnel couplings anisotropy or detuning away from the charge-degeneracy point. As a result, the system exhibits a universal conductance at zero temperature, which is a fraction of the conductance quantum, and low-temperature corrections with a universal power-law exponent. In addition, we consider Majorana islands connected to interacting one-dimensional leads, and find different stable fixed points near and far from the charge-degeneracy point.Comment: 10+ pages, 5 figure

Economic restructuring in New York State

When economic activity slows down, labor markets may undergo extensive structural change-the permanent reallocation of workers across industries. Job losses can be heavy, and creating new jobs and retraining displaced workers to fill them can take time. A high degree of restructuring may help to explain why New York State's most recent downturn persisted for well over two years. Subseries: Second District Highlights.Employment - New York (State) ; Labor market - New York (State) ; Industries - New York (State) ; Federal Reserve District, 2nd

Quantum Stirring in low dimensional devices

A circulating current can be induced in the Fermi sea by displacing a scatterer, or more generally by integrating a quantum pump into a closed circuit. The induced current may have either the same or the opposite sense with respect to the "pushing" direction of the pump. We work out explicit expressions for the associated geometric conductance using the Kubo-Dirac monopoles picture, and illuminate the connection with the theory of adiabatic passage in multiple path geometry.Comment: 6 pages, 5 figures, improved versio

Roadmap to Majorana surface codes

Surface codes offer a very promising avenue towards fault-tolerant quantum computation. We argue that two-dimensional interacting networks of Majorana bound states in topological superconductor/semiconductor heterostructures hold several distinct advantages in that direction, both concerning the hardware realization and the actual operation of the code. We here discuss how topologically protected logical qubits in this Majorana surface code architecture can be defined, initialized, manipulated, and read out. All physical ingredients needed to implement these operations are routinely used in topologically trivial quantum devices. In particular, we show that by means of quantum interference terms in linear conductance measurements, composite single-electron pumping protocols, and gate-tunable tunnel barriers, the full set of quantum gates required for universal quantum computation can be implemented.Comment: 23 pages, 8 figure

Towards realistic implementations of a Majorana surface code

Surface codes have emerged as promising candidates for quantum information processing. Building on the previous idea to realize the physical qubits of such systems in terms of Majorana bound states supported by topological semiconductor nanowires, we show that the basic code operations, namely projective stabilizer measurements and qubit manipulations, can be implemented by conventional tunnel conductance probes and charge pumping via single-electron transistors, respectively. The simplicity of the access scheme suggests that a functional code might be in close experimental reach.Comment: 5 pages, 1 p. suppl.mat, PRL in pres

Electron Pair Resonance in the Coulomb Blockade

We study many-body corrections to the cotunneling current via a localized state with energy $\epsilon_d$ at large bias voltages $V$. We show that the transfer of {\em electron pairs}, enabled by the Coulomb repulsion in the localized level, results in ionization resonance peaks in the third derivative of the current with respect to $V$, centered at $eV=\pm 2\epsilon_d/3$. Our results predict the existence of previously unnoticed structure within Coulomb-blockade diamonds.Comment: 5 pages, 4 figure

Nonequilibrium charge-Kondo transport through negative-U molecules

Low-temperature transport through molecules with effectively negative charging energy U exhibits a charge-Kondo effect. We explore this regime analytically by establishing an exact mapping between the negative-U and the positive-U Anderson models, which is suitable for the description of nonequilibrium transport. We employ this mapping to demonstrate the intimate relation between nonequilibrium tranport in the spin-Kondo and charge-Kondo regimes, and derive analytical expressions for the nonlinear current-voltage chracteristics as well as the shot noise in the latter regime. Applying the mapping in the opposite direction, we elucidate the finding of super-Poissonian noise in the positive-U Anderson model at high temperatures, by relating the correlations between spin flips to pair-tunneling processes at negative U.Comment: 11 pages, 5 figure

Redesain Kantor Bupati Minahasa (Refleksi Budaya Sub-etnis Toulour Dalam Rancangan Arsitektur)

Kabupaten Minahasa merupakan sebuah daerah otonom yang memiliki struktur Pemerintahan yang berfungsi untuk mengatur berbagai aspek dan bidang demi kelangsungan hidup di Tanah Minahasa. Sistem Pemerintah Daerah Kabupaten merupakan ujung tombak pelaksanaan pembangunan, maka diperlukan peningkatan kebutuhan sarana dan prasarana perkantoran sesuai dengan standart daerah otonom. Pada Kenyataan sekarang ini, melalui metode observasi dan wawancara Kantor Bupati yang ada di Minahasa mengalami penurunan mutu dan kualitas serta terdapat beberapa masalah yang terjadi pada kondisi lapangan kawasan sekitar. Berdasarkan Kenyataan ini, diperlukan sebuah gagasan Redesain untuk menata dan merancang kembali Kantor Bupati Minahasa. Dengan penerapan strategi ini, diharapkan terciptanya Kantor Bupati Minahasa yang terdesain dengan baik. Kabupaten Minahasa merupakan sebuah wilayah yang besar dan sangat luas serta terdapat 9 sub-etnis suku asli orang Minahasa. Sekarang ini banyak terjadinya pemekaran-pemekaran di Tanah Minahasa yang ingin berdiri sendiri, mandiri dan menjadi daerah otonom. Daerah-daerah yang sudah resmi dimekarkan seperti Kabupaten Minahasa Utara, Kabupaten Minahasa Selatan, Kota Tomohon, Kabupaten Minahasa Tenggara. Daerah-daerah Kabupaten ini berdiri sendiri dengan menggunakan sub-etnis masing-masing daerah sesuai dengan pembagian sub-etnis di Tanah Minahasa. Hal ini menjadi dasar pertimbangan diangkatnya tema “ Refleksi Budaya sub-etnis Toulour dalam Rancangan Arsitektur”, karena Kantor Bupati Minahasa terletak di Tondano dengan sub-etnis Toulour. Sebagai hasilnya adalah rancangan Kantor Bupati yang efisien dan mencerminkan kebudayaan Toulour. Diharapkan Kantor Bupati ini bisa meningkatkan kualitas dan kuantitas Pemerintah Kabupaten Minahasa, mensejahterakan kehidupan masyarakat tanah Minahasa dan masyarakat Minahasa bisa melestarikan kebudayaan sub-etnis Toulour. Kata kunci : Kabupaten Minahasa, Kantor, sub-etnis Toulour [1] Mahasiswa PS1 Arsitektur UNSRAT [2] Staf Dosen Pengajar Arsitektur UNSRA

Low-temperature ordered phases of the spin-12\frac{1}{2} XXZ chain system Cs2_2CoCl4_4

In this study the magnetic order of the spin-1/2 XXZ chain system Cs$_2$CoCl$_4$ in a temperature range from 50 mK to 0.5 K and in applied magnetic fields up to 3.5 T is investigated by high-resolution measurements of the thermal expansion and the specific heat. Applying magnetic fields along a or c suppresses $T_\textrm{N}$ completely at about 2.1 T. In addition, we find an adjacent intermediate phase before the magnetization saturates close to 2.5 T. For magnetic fields applied along b, a surprisingly rich phase diagram arises. Two additional transitions are observed at critical fields $\mu_0 H_{SF1}\simeq 0.25$ T and $\mu_0 H_{SF2}\simeq 0.7$ T, which we propose to arise from a two-stage spin-flop transition.Comment: 10 pages, 10 figure

ANALISIS PRASARANA DAN SARANA DI KECAMATAN LOLAK KABUPATEN BOLAANG MONGONDOW

Untuk menentukan kesuksesan pembangunan suatu wilayah diperlukan prasarana dan sarana yang memadai agar suatu pembangunan dapat berjalan dengan baik. Kecamatan Lolak merupakan ibukota dari Kabupaten Bolaang Mongondow dengan jumlah penduduk 32.373, sebagai ibukota kabupaten yang menjadi pusat pemerintahan tentunya harus diperlukan prasarana dan sarana yang memadai maka dari itu tujuan dari penelitian ini adalah menganalisis ketersediaan serta mengetahui keinginan/kebutuhan masyarakat tentang prasarana sarana di Kecamatan Lolak dan menganalisis kebutuhan prasarana dan sarana. Metode yang digunakan adalah metode kuantitatif untuk menganalisis bagaimana ketersediaan dan kebutuhan sarana prasarana permukiman di Kecamatan Lolak yang berdasarkan pada acuan SPM dan SNI. Metode deskriptif di pakai untuk menganalisis Kuesioner yang dilakukan dengan menggunakan distribusi frekuensi dan bar chart berdasarkan analisis tersebut akan diketahui kebutuhan dari masyarakat. Hasil analisis menyatakan ketersediaan prasarana berupa jalan,drainase,dan air bersih sudah memadai. tapi untuk persampahan di kecamatan lolak perlu penambahan seperti truck sampah atau gerobak sampah yang akan membawa sampah tersebut di TPA, dan penyediaan sarana berupa sarana pendidikan dan kesehatan menurut standar belum memenuhi. Keinginan masyarakat akan prasarana dan sarana di Kecamatan Lolak ada yang masih menginginkan penambahan dan ada juga yang sudah tidak menginginkan penambahan berupa sarana pendidikan. Kebutuhan prasarana dan sarana 20 tahun mendatang masih memerlukan penyediaan berupa air bersih, persampahan, sarana pendidikan, kesehatan, perdagangan dan ruang terbuka hijau. Kata Kunci : Prasarana,Sarana,Ketersediaan,Kebutuha