منابع مشابه
An Adiabatic Multiplier
Adiabatic switching might be a possibility t o o vercome the power losses in CMOS due to the charging of capacities. The design of adiabatic gates and registers has been examined in the past. The possibilities ooered to the design of logic are evaluated in this paper. For this purpose an array m ultiplier has been chosen as a representative for more complex structures. To provide the possibilit...
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Quantum computations can be implemented not only by the action of quantum circuits, but by the adiabatic evolution of a system’s Hamiltonian. This can be done by initializing the system into the ground state of a simple Hamiltonian, and then adiabatically evolving the Hamiltonian to one whose ground state encodes the solution to the problem. The time complexity of the problem, or more basically...
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A quantum pumping mechanism that produces dc current or voltage in response to a cyclic deformation of the confining potential in an open quantum dot is reported. The voltage produced at zero current bias is sinusoidal in the phase difference between the two ac voltages deforming the potential and shows random fluctuations in amplitude and direction with small changes in external parameters suc...
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We present a field theoretic treatment of an adiabatic quantum motor. We explicitly discuss a motor termed Thouless motor which is based on a Thouless pump operating in reverse. When a sliding periodic potential is considered as the motor degree of freedom, a bias voltage applied to the electron channel sets the motor in motion. We investigate a Thouless motor whose electron channel is modeled ...
متن کاملAn Adiabatic Theorem for Resonances
We prove a robust extension of the quantum adiabatic theorem. The theorem applies to systems that have resonances instead of bound states, and to systems for which just an approximation to a bound state is known. To demonstrate the theorem’s usefulness in a concrete situation, we apply it to shape resonances. Partially Supported by National Science Foundation Grant DMS–0907165. Partially Suppor...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards, Section C: Engineering and Instrumentation
سال: 1968
ISSN: 0022-4316
DOI: 10.6028/jres.072c.004