نتایج جستجو برای: adiabatic

تعداد نتایج: 12801  

1985
M V Berry

A semiclassical connection IS established between quantal and classical properties of a system whose Hamiltonian is slowly cycled by varying its parameters round a circuit. The quantal property is a geometrical phase shift y,, associated with an eigenstate with quantum numbers n = {n,}: the classical property is a shift A@,(I) in the Ith angle variable for motion round a phase-space torus with ...

2012
Jianping Hu

This paper introduces an adiabatic register file based on two-phase CPAL (Complementary Pass-Transistor Adiabatic Logic circuits) with power-gating scheme, which can operate on a single-phase power clock. A 32×32 single-phase adiabatic register file with power-gating scheme has been implemented with TSMC 0.18μm CMOS technology. All the circuits except for the storage cells employ two-phase CPAL...

2009
Zhou Zhao Ashok Srivastava Lu Peng Saraju P. Mohanty

Low power and robust circuitry are permanent hotspots in VLSI design. Adiabatic logic is one of potential breakthroughs for these goals. Especially, designing reliable clock tree is very significant for adiabatic logic due to four-phase clocked power required for pipelined data transmission in adiabatic system. In this paper, we present analysis of charging speed and clock types that influence ...

2013
Abdurrouf

It is believed so far that the high harmonic generation (HHG) signal of adiabatically aligned molecules does not show any revival structure. This paper demonstrates the existence of revival structure of HHG signals of molecular ensemble aligned by using adiabatic as well as switched-off schema. The results are presented in the externally available control parameters – the delay-time, d t , betw...

Journal: :Quantum Information Processing 2012
Geordie Rose Kamran Karimi Neil G. Dickson Firas Hamze Mohammad H. S. Amin Marshall Drew-Brook Fabián A. Chudak Paul I. Bunyk William G. Macready

We calculate median adiabatic times (in seconds) of a specific superconducting adiabatic quantum processor for an NP-hard Ising spin glass instance class with up to N = 128 binary variables. To do so, we ran high performance Quantum Monte Carlo simulations on a large-scale Internet-based computing platform. We compare the median adiabatic times with the median running times of two classical sol...

Journal: :Magnetic resonance in medicine 2012
Steven S Harris Hui Mao Xiaoping P Hu

Superparamagnetic iron oxide nanoparticles produce changes in the surrounding microscopic magnetic field. A method for generating contrast based on the application of an adiabatic preparation pulse and the failure of the adiabatic condition surrounding the nanoparticles is introduced in this article. Images were obtained in the presence and absence of an adiabatic preparation pulse and the diff...

Journal: :Physical review letters 2013
Qi Zhang Jiangbin Gong C H Oh

Classical adiabatic invariants in actual adiabatic processes possess intrinsic dynamical fluctuations. The magnitude of such intrinsic fluctuations is often thought to be negligible. This widely believed physical picture is contested here. For adiabatic following of a moving stable fixed-point solution facing a pitchfork bifurcation, we show that intrinsic dynamical fluctuations in an adiabatic...

Journal: :Magnetic resonance in medicine 2016
Hadrien Dyvorne Rafael O'Halloran Priti Balchandani

PURPOSE To improve ultrahigh field diffusion-weighted imaging (DWI) in the presence of inhomogeneous transmit B1 field by designing a novel semi-adiabatic single-refocused DWI technique. METHODS A 180° slice-selective, adiabatic radiofrequency (RF) pulse of 4 ms duration was designed using the adiabatic Shinnar-Le Roux algorithm. A matched-phase slice-selective 90° RF pulse of 8 ms duration w...

Journal: :The Journal of chemical physics 2008
Jianmin Tao Sergei Tretiak Jian-Xin Zhu

It is known that the adiabatic approximation in time-dependent density functional theory usually provides a good description of low-lying excitations of molecules. In the present work, the capability of the adiabatic nonempirical meta-generalized gradient approximation (meta-GGA) of Tao, Perdew, Staroverov, and Scuseria (TPSS) to describe atomic and molecular excitations is tested. The adiabati...

2013
Abhishek Rai Amit Shukla Mayank Gupta

As the density and operating speed of complementary metal oxide semiconductor (CMOS) circuits increases, dynamic power dissipation has become a concern in the design of VLSI circuits. This paper presents a Two-Phase Adiabatic Static Clocked Logic (2PASCL) which shows the lowest power dissipation among different adiabatic logic families based on energy recovery principle. In adiabatic switching ...

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