Academic Libraries in Poland University of Warsaw Library as an Example of Library Transformation in Post-Communist Poland

This article examines the complex changes that have occurred in Polish academic libraries, especially the University of Warsaw Library (UWL), after the fall of communism in 1989.Shortly afterwards, thanks to grants from the Andrew W. Mellon Foundation, an accelerated transformation in all library practices began. In preparation for automation, the authority file was created, introducing the process of applying international standards in bibliographic description in a new climate of interlibrary cooperation. The Library of Congress classification and access to open stacks were introduced for the first time in Poland in a newly constructed UWL building. A crowning achievement of the transformation is the first Polish union catalog, Narodowy Uniwersalny Katalog Centralny [National Union Catalog], NUKAT, launched in 2002

Pauli Spin Blockade of Heavy Holes in a Silicon Double Quantum Dot

In this work, we study hole transport in a planar silicon metal-oxide-semiconductor based double quantum dot. We demonstrate Pauli spin blockade in the few hole regime and map the spin relaxation induced leakage current as a function of inter-dot level spacing and magnetic field. With varied inter-dot tunnel coupling we can identify different dominant spin relaxation mechanisms. Applying a strong out-of-plane magnetic field causes an avoided singlet-triplet level crossing, from which the heavy hole g-factor $\sim$ 0.93, and the strength of spin-orbit interaction $\sim$ 110 $\mu$eV, can be obtained. The demonstrated strong spin-orbit interaction of heavy hole promises fast local spin manipulation using only electrical fields, which is of great interest for quantum information processing.Comment: 15 pages, 4 figure

Silicon CMOS architecture for a spin-based quantum computer

Recent advances in quantum error correction (QEC) codes for fault-tolerant quantum computing \cite{Terhal2015} and physical realizations of high-fidelity qubits in a broad range of platforms \cite{Kok2007, Brown2011, Barends2014, Waldherr2014, Dolde2014, Muhonen2014, Veldhorst2014} give promise for the construction of a quantum computer based on millions of interacting qubits. However, the classical-quantum interface remains a nascent field of exploration. Here, we propose an architecture for a silicon-based quantum computer processor based entirely on complementary metal-oxide-semiconductor (CMOS) technology, which is the basis for all modern processor chips. We show how a transistor-based control circuit together with charge-storage electrodes can be used to operate a dense and scalable two-dimensional qubit system. The qubits are defined by the spin states of a single electron confined in a quantum dot, coupled via exchange interactions, controlled using a microwave cavity, and measured via gate-based dispersive readout \cite{Colless2013}. This system, based entirely on available technology and existing components, is compatible with general surface code quantum error correction \cite{Terhal2015}, enabling large-scale universal quantum computation

Charge Offset Stability in Si Single Electron Devices with Al Gates

We report on the charge offset drift (time stability) in Si single electron devices (SEDs) defined with aluminum (Al) gates. The size of the charge offset drift (0.15 $e$) is intermediate between that of Al/AlO$_x$/Al tunnel junctions (greater than 1 $e$) and Si SEDs defined with Si gates (0.01 $e$). This range of values suggests that defects in the AlO$_x$ are the main cause of the charge offset drift instability

The Challenge of Evaluating and Developing an Interdisciplinary Collection: The East Asian Collection at the Public College

When the faculty of the College of Staten Island, CUNY (CSI) introduced a new baccalaureate level program in East Asian Studies the library faced the challenge of evaluating the adequacy of its holdings to support the program and its future development. Multidisciplinary fields of study (e.g., East Asian Studies) that pertain to a specific geographical or cultural area present a unique set of evaluative issues because their subject content cannot be confined to set classification ranges, rendering the traditional methods of collection analysis inadequate. This poster will present the results of an evaluation of CSI’s East Asian Studies collection, discuss some of the challenges the authors encounter when analyzing this collection, and it will propose ways that the collection can be strengthened in the future. This analysis, as any analysis of a multidisciplinary field, must begin with clearly defining its span—in this case the scope of the East Asian Studies program at CSI. Then the authors will identify a few peer institutions with East Asian collections that can be used for purposes of comparison. Then the authors will examine how to best use the available tools (e.g., Aleph integrated library system, OCLC WorldShare Collection evaluation tool, and the CSI stacks). The poster will then explore strategies for specific (call number, subject, and keyword) catalog searches and the types of searches available by the WorldShare Collection Evaluation tool which could render results relevant for the purpose of multidisciplinary content evaluation. The authors will share related subject headings lists and call number ranges that could be successfully used to cover the area of interest and the keywords crucial to successful searches

Cotunneling thermopower of single electron transistors

We study the thermopower of a quantum dot weakly coupled to two reservoirs by tunnel junctions. At low temperatures the transport through the dot is suppressed by charging effects (Coulomb blockade). As a result the thermopower shows an oscillatory dependence on the gate voltage. We study this dependence in the limit of low temperatures where the transport through the dot is dominated by the processes of inelastic cotunneling. We also obtain a crossover formula for intermediate temperatures which connects our cotunneling results to the known sawtooth behavior in the sequential tunneling regime. As the temperature is lowered, the amplitude of thermopower oscillations increases, and their shape changes qualitatively.Comment: 9 pages, including 4 figure