67,787 research outputs found
Quantum Robot: Structure, Algorithms and Applications
A kind of brand-new robot, quantum robot, is proposed through fusing quantum
theory with robot technology. Quantum robot is essentially a complex quantum
system and it is generally composed of three fundamental parts: MQCU (multi
quantum computing units), quantum controller/actuator, and information
acquisition units. Corresponding to the system structure, several learning
control algorithms including quantum searching algorithm and quantum
reinforcement learning are presented for quantum robot. The theoretic results
show that quantum robot can reduce the complexity of O(N^2) in traditional
robot to O(N^(3/2)) using quantum searching algorithm, and the simulation
results demonstrate that quantum robot is also superior to traditional robot in
efficient learning by novel quantum reinforcement learning algorithm.
Considering the advantages of quantum robot, its some potential important
applications are also analyzed and prospected.Comment: 19 pages, 4 figures, 2 table
Synthesis and Optimization of Reversible Circuits - A Survey
Reversible logic circuits have been historically motivated by theoretical
research in low-power electronics as well as practical improvement of
bit-manipulation transforms in cryptography and computer graphics. Recently,
reversible circuits have attracted interest as components of quantum
algorithms, as well as in photonic and nano-computing technologies where some
switching devices offer no signal gain. Research in generating reversible logic
distinguishes between circuit synthesis, post-synthesis optimization, and
technology mapping. In this survey, we review algorithmic paradigms ---
search-based, cycle-based, transformation-based, and BDD-based --- as well as
specific algorithms for reversible synthesis, both exact and heuristic. We
conclude the survey by outlining key open challenges in synthesis of reversible
and quantum logic, as well as most common misconceptions.Comment: 34 pages, 15 figures, 2 table
Quantum Technology: The Second Quantum Revolution
We are currently in the midst of a second quantum revolution. The first
quantum revolution gave us new rules that govern physical reality. The second
quantum revolution will take these rules and use them to develop new
technologies. In this review we discuss the principles upon which quantum
technology is based and the tools required to develop it. We discuss a number
of examples of research programs that could deliver quantum technologies in
coming decades including; quantum information technology, quantum
electromechanical systems, coherent quantum electronics, quantum optics and
coherent matter technology.Comment: 24 pages and 6 figure
Updating the bathymetry of the Maltese Islands : a national-scale marine survey employing interferometric sonar
Chapter 8The ERDF project detailed a requirment for the scanning of an extensive area of 415
square kilometers employing an interferometric sonar. The process, though hampered
by high wind and adverse sea conditions was completed as per contract requirements,
yielding interesting new information of the bathymetric landscapes of the Maltese Islands.
Survey design: The campaign for the bathymetric survey of the Maltese islands, carried
out during the summers of 2012 and 2013, summed total area of about 415 square
kilometres and covered depths between 15 and 200 m. Th e total survey area was divided
into 28 survey blocks, laid out so each one was completed during a full day of work. This
rule applied to all the blocks except for blocks 16 and 17 which were completed over
the course of two days each. Each survey block was completed by running survey lines
parallel to the blocks’ longitudinal axis. During rough weather, lines were run parallel to
predominant wave direction to minimise vessel roll. Line spacing ranged from 50 to 300
metres and was decided by a combination of the sensor’s accuracy at increasing horizontal
range, depth, seabed type and sea state. Crosslines were also run for each block, usually on
the boundary, to allow for additional data checks between neighbouring blockspeer-reviewe
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