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This study aimed to design a media for physics learning based on Android apps. The learning media are designed based on conceptual discussion, simulation, and video with mini-quizzes containing cognitive, affective, and psychomotor aspects. Android apps have been tested to be valid, practical, and effective for use in the classroom. The adopted model development is the ADDIE model which stand for Analysis, Design, Development, Implementation and Evaluation. The media were tested by physics education expert and experimented on a small group tests. Data were collected through questionnaires analyzed through descriptive statistics, interviews, and observations, and analyzed through qualitative analysis. The physics learning media was produced named Phy-Cast (Physics-Cast). The Android apps contain several senior high school physics topics namely discussing parabolic motion, fluid statics, and quantum phenomena. As a result of the study, it was found that Phy-Cast, physics learning media, has good compatibility, and there is no major problem when used. Phy-Cast has been tested in a small group, and the results have shown that the learning tool is valid, practical, and effective for use in the learning process. [ABSTRACT FROM AUTHOR]

Superconductors are demonstrated to profoundly differ in arrangement yet elusive and mysterious. To understand the Josephson Effect, it is advisable to first acquire some notion about the origin of the superconductivity. Macroscopically, superconductivity manifests itself as a lack of resistance, so that the current flows with no obstacles. The practical applications of superconductivity are consistently improving each year. However, the real utilization of superconducting devices is constrained by the way that they should be cooled to low temperatures to move toward becoming superconducting. The revelation of high-Tc superconductors broadens the feasible application of superconductors. The Josephson Effect has enabled the advancement of unique electrical devices and systems including SQUIDs, quantum computers, analog to digital (A/D) converters, Josephson voltage standard, THz emitters and detectors, single flux quantum devices, etc. In this research paper, we studied the Superconducting materials, its characteristics and applications in physics. [ABSTRACT FROM AUTHOR]

We demonstrate process characterization of basic gates of an optical cluster-state quantum computing. We present complete process tomography of a single-qubit gate and evaluate the bounds on the process fidelity of a two-qubit gate. [ABSTRACT FROM AUTHOR]

We propose and find pulse sequences for non-adiabatic two-qubit gates (CNOT, swap and controlled Z gates) for the Kane silicon-based electron mediated nuclear spin quantum computer architecture. These quantum gates are simpler, with higher fidelity and faster than existing proposals. Any two qubit gate may be implemented using similar pulse sequences. In this paper, we investigate the effect of decoherence on the operation of these quantum gates and some simple algorithms for a variety of dephasing rates. Our model shows that conservative estimates of the dephasing rates in the Kane architecture give gate fidelities comparable to that required for fault tolerant quantum computing. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Hypothesis elimination is a special case of Bayesian updating, where each piece of new data rules out a set of prior hypotheses. We describe an algorithm to perform hypothesis elimination for a class of probability distributions encoded on a register of qubits, and establish a lower bound on the computational resources it requires. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

The inherent resistance of geometric phase to decoherence may enable fault-tolerant quantum computation. However, as decoherence tends to affect many implementations, we must first understand the behavior of such phases for mixed states. Here we report an experimental measurement of geometric phase for polarization mixed states. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

The endohedral fullerene 15N@C60 comprises an electron spin S = 3/2 coupled to a nuclear spin I = 1/2 and is therefore ideally suited for experimental testing of basic properties of quantum mechanics. We will show that the 15N@C60 molecule represents a multi qubit system where different kinds of entangled states can be generated. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

In this paper a quantum computer based on the recombination processes happening in semiconductor devices is presented. A “data element” and a “computational element” are derived based on Schokley-Read-Hall statistics and they can later be used in order to manifest a simple and known quantum algorithm. Such a paradigm is shown by the application of the proposed technology onto the Shor’s period-finding algorithm. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Quantum computation in its binary concept requires a set of two different quantum states, a quantum two-level system that physically realizes the quantum bit (qubit). Amongst the many other existing proposals, we discuss qubits based on the charge distribution of a few electrons. Especially the role of higher lying states is investigated with respect to their role as source of decoherence for the two-level system of the qubit constructed in the ground state. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]