4) This is the point that Schrodinger made with his famous thought-experiment in which, without the collapse, a cat ends up in a state - a superposition of being alive and being dead - which, by the usual quantum-mechanical
rules, is a state in which the cat is neither determinately alive nor determinately dead.
junctions are the foundation of a fledgling memory technology called magnetic random access memory, or MRAM.
Moshammer says the findings decisively rule out both alternatives to rescattering--two or more electrons jumping ship simultaneously by the quantum-mechanical
trick called tunneling or an atom spitting out additional electrons as an adjustment to the initial loss of an electron.
Although extremely rudimentary today, such devices may eventually outdo conventional computers by exploiting the quantum-mechanical
nature of matter.
Observing interference within each cloud's quantum-mechanical
wave behavior yields a precise measurement of gravity at that position.
Atoms of the simplest element, hydrogen, have finally yielded to efforts to supercool them into a single quantum-mechanical
Electrons trapped within them exhibit energy levels and quantum-mechanical
behavior similar to electrons in atoms.
His algorithm involved the use of quantum-mechanical
operations to factor whole numbers (SN: 5/14/94, p.
Now, researchers have introduced the possibility of creating an atomic system in which, for short periods of time, an electron behaves more like a planet orbiting the sun than a quantum-mechanical
particle whose behavior is defined strictly in terms of probabilities.
methods and supercomputers to analyze how steel fractures.
But in the quantum-mechanical
realm of atoms, electrons, and photons, such "tunneling" behavior has a small but significant probability of occurring.
It's qualitatively consistent with all of the quantum-mechanical
predictions in terms of temperature, field, and density--every parameter that we varied," Awschalom says.