69 research outputs found
A classical groupoid model for quantum networks
No full textWe give a mathematical analysis of a new type of classical computer network
architecture, intended as a model of a new technology that has recently been
proposed in industry. Our approach is based on groubits, generalizations of
classical bits based on groupoids. This network architecture allows the direct
execution of a number of protocols that are usually associated with quantum
networks, including teleportation, dense coding and secure key distribution
Zooplankton of Western Lake Erie at Put-In-Bay: A Quantitative Study, April 1973 - March 1974
No full textAuthor Institution: Center for Lake Erie Area Research, The Ohio State UniversityREUTTER, VERONICA M. AND JEFFREY M. REUTTER. Zooplankton of western Lake Erie at Put-in-Bay: a quantative study, April 1973-March 1974. Ohio J. Sci. 75(5): 256, 1975
A Classical Groupoid Model for Quantum Networks
No full textWe give a mathematical analysis of a new type of classical computer network architecture, intended as a model of a new technology that has recently been proposed in industry. Our approach is based on groubits, generalizations of classical bits based on groupoids. This network architecture allows the direct execution of a number of protocols that are usually associated with quantum networks, including teleportation, dense coding and secure key distribution
A 2-Categorical Approach to Composing Quantum Structures
No full textWe present an infinite number of construction schemes for quantum structures, including unitary error bases, Hadamard matrices, quantum Latin squares and controlled families, many of which have not previously been described. Our results rely on the type structure of biunitary connections, 2-categorical structures which play a central role in the theory of planar algebras. They have an attractive graphical calculus which allows simple correctness proofs for the constructions we present. We apply these techniques to construct a unitary error basis that cannot be built using any previously known method
A European union and Canadian review of public health nursing preparation and practice.
No full textThis study explores the preparation and role of the public health nurse (PHN) across European Union (EU) countries (Finland, Sweden, and the United Kingdom) and Canadian provinces (Alberta, New Brunswick, and Prince Edward Island)
Operating Principles, Common Questions, and Performance Data for an Atmospheric Driven Atmos Clock
No full textThe elegance of the Atmos clock and the curiosity of mankind in self-operational mechanical systems have propelled this time device into our collective desire for more knowledge. The search for a self-winding time piece, based on normal atmospheric fluctuations, was pursued for centuries by horologists with the well-known clock proposed by J. L. Reutter and commercialized by Jaeger LeCoultre. This clock has generated numerous discussions throughout the years as noted in past Bulletin articles and other correspondences within the time keeping community. In this paper, the operating principles of the Atmos clock will be reviewed using fundamental science and engineering principles. Next, key questions and experimental observations will be discussed in light of the operating concepts to clarify the clock’s performance. Finally, an extensive database will be introduced which was gathered through physical measurements and data recording of an Atmos 540 clock
Biunitary constructions in quantum information
No full textWe present an infinite number of construction schemes involving unitary error
bases, Hadamard matrices, quantum Latin squares and controlled families, many
of which have not previously been described. Our results rely on biunitary
connections, algebraic objects which play a central role in the theory of
planar algebras. They have an attractive graphical calculus which allows simple
correctness proofs for the constructions we present. We apply these techniques
to construct a unitary error basis that cannot be built using any previously
known method.Comment: 48 pages, Mathematica notebook attached; final versio
A Celebration of Twentieth Century Art Song, April 29, 1992
No full textThis is the concert program of the A Celebration of Twentieth Century Art Song performance on Wednesday, April 29, 1992 at 8:30 p.m., at the Concert Hall, 855 Commonwealth Avenue. Works performed were Let the Florid Music Praise! by Benjamin Britten, Weep You No More, Sad Fountains by Arnold Freed, At Saint Patrick's Purgatory by Samuel Barber, Wie erkenn' ich mein Treulieb vor den andern nun? by Hermann Reutter, Auf Morgen, ist Sankt-Valentinstag by H. Reutter, Pourquoi by Olivier Messiaen, Twas Just This Time Last Year by Martha Alter, A Clear Midnight by Kent Kennan, Grandma's Kitchen by Lorri Froggét, The Old by L. Froggét, The Housatonic at Stockbridge by Charles Ives, The Things Our Fathers Loved (An the Greatest of These Was Liberty) by C. Ives, The Circus Band by C. Ives, Canto Negro by Xavier Montsalvatge, Song of Black Max by William Bolcom, Silhouette by Leonard Bernstein, Wir haben winterlange Nacht by Kurt Weill, Wo zwei Herzenliebe by K. Weill, April Fool Baby by Paul Bowles, Galathea by Arnold Schoenberg, Gigerlette by A. Schoenberg, Quel rosignuol che sì soave piagne by Ildebrando Pizzetti, To Lizbie Browne by Gerald Finzi, Schenk mir deinen goldenen Kamm by Arnold Schoenberg, and Erhebung by A. Schoenberg. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
Shaded tangles for the design and verification of quantum programs
No full textWe give a scheme for interpreting shaded tangles as quantum programs, with the property that
isotopic tangles yield equivalent programs. We analyze many known quantum programs in this
way—including entanglement manipulation and error correction—and in each case present a fullytopological
formal verification, yielding in several cases substantial new insight into how the program
works. We also use our methods to identify several new or generalized procedures
Biunitary constructions in quantum information
No full textWe present an infinite number of construction schemes involving unitary error bases, Hadamard matrices, quantum Latin squares and controlled families, many of which have not previously been described. Our results rely on biunitary connections, algebraic objects which play a central role in the theory of planar algebras. They have an attractive graphical calculus which allows simple correctness proofs for the constructions we present. We apply these techniques to construct a unitary error basis that cannot be built using any previously known method
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