642 research outputs found
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
Axial correlation revivals and number factorization with structured random waves
We advance a general theory of field correlation revivals of structured
random wave packets, composed of superpositions of propagation-invariant modes,
at pairs of planes transverse to the packet propagation direction. We derive an
elegant analytical relation between the normalized intensity autocorrelation
function of thus structured paraxial light fields at a pair of points on an
optical axis of the system and a Gauss sum, thereby establishing a fundamental
link between statistical optics and number theory. We propose and
experimentally implement a simple, robust analog random wave computer that can
efficiently decompose numbers into prime factors
An optical solution for the set splitting problem
We describe here an optical device, based on time-delays, for solving the set
splitting problem which is well-known NP-complete problem. The device has a
graph-like structure and the light is traversing it from a start node to a
destination node. All possible (potential) paths in the graph are generated and
at the destination we will check which one satisfies completely the problem's
constrains.Comment: 10 pages, 2 figure
Integrated quantum photonics
EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Quantum Cryptography
Quantum cryptography could well be the first application of quantum mechanics
at the individual quanta level. The very fast progress in both theory and
experiments over the recent years are reviewed, with emphasis on open questions
and technological issues.Comment: 55 pages, 32 figures; to appear in Reviews of Modern Physic
MIT Space Engineering Research Center
The Space Engineering Research Center (SERC) at MIT, started in Jul. 1988, has completed two years of research. The Center is approaching the operational phase of its first testbed, is midway through the construction of a second testbed, and is in the design phase of a third. We presently have seven participating faculty, four participating staff members, ten graduate students, and numerous undergraduates. This report reviews the testbed programs, individual graduate research, other SERC activities not funded by the Center, interaction with non-MIT organizations, and SERC milestones. Published papers made possible by SERC funding are included at the end of the report
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