نتایج جستجو برای: quantum wire
تعداد نتایج: 324244 فیلتر نتایج به سال:
Discussions of the force on a charged particle outside a current-carrying wire often assume that the wire is electrically neutral. This problem explores how this assumption is not quite correct. We give solutions both in the lab frame and in the rest frame of the conduction electrons, using both Maxwell’s equations and special relativity. We note that for current to flow in a resistive wire, th...
In this paper, we introduce the concept of dual universality of hash functions and present its applications to various quantum and classical communication models including cryptography. We begin by establishing the one-to-one correspondence between a linear function family F and a code family C, and thereby defining ε-almost dual universal2 hash functions, as a generalization of the conventiona...
چکیده ندارد.
We discuss differences between the exact S–matrix for scattering on serial structures and a known factorized expression constructed of single–element S–matrices. As an illustration , we use an exactly solvable model of a quantum wire with two point impurities.
The electric current conservation in a two-dimensional quantum wire under a time dependent field is investigated. Such a conservation is obtained as the global density of states contribution to the emittance is balanced by the contribution due to the internal charge response inside the sample. However when the global partial density of states is approximately calculated using scattering matrix ...
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