Results 81 to 90 of about 1,655,666 (239)

Path-integral approach to ’t Hooft’s derivation of quantum physics from classical physics [PDF]

open access: yesPhysical Review A, 2005
We present a path-integral formulation of 't Hooft's derivation of quantum physics from classical physics. The crucial ingredient of this formulation is Gozzi et al.'s supersymmetric path integral of classical mechanics. We quantize explicitly two simple classical systems: the planar mathematical pendulum and the Roessler dynamical system.
BLASONE, MASSIMO, JIZBA P, KLEINERT H.
openaire   +1 more source

Path Integral Approach to Quantum Thermodynamics. [PDF]

open access: yesPhysical Review Letters, 2017
Work belongs to the most basic notions in thermodynamics but it is not well understood in quantum systems, especially in open quantum systems. By introducing a novel concept of the work functional along an individual Feynman path, we invent a new ...
K. Funo, H. Quan
semanticscholar   +1 more source

Heat-exchange statistics in driven open quantum systems

open access: yesNew Journal of Physics, 2014
As the dimensions of physical systems approach the nanoscale, the laws of thermodynamics must be reconsidered due to the increased importance of fluctuations and quantum effects.
S Gasparinetti   +3 more
doaj   +1 more source

A microwave scattering spectral method to detect the nanomechanical vibrations embedded in a superconducting qubit

open access: yesScientific Reports, 2023
Nanomechanical resonators (NMRs), as the quantum mechanical sensing probers, have played the important roles for various high-precision quantum measurements. Differing from the previous emission spectral probes (i.e., the NMR modified the atomic emission)
H. Y. Gao, L. F. Wei
doaj   +1 more source

New Theoretical Approach to Quantum Size Effects of Interactive Electron-hole in Spherical Semiconductor Quantum Dots [PDF]

open access: yes, 2009
The issue of quantum size effects of interactive electron-hole systems in spherical semiconductor quantum dots is put to question. A sharper theoretical approach is suggested based on a new pseudo-potential method.
Billaud, Baptiste   +2 more
core   +3 more sources

c = 1 Two Dimensional Quantum Gravity

open access: yes, 1992
The continuum (Liouville) approach to the two-dimensional (2-D) quantum gravity is reviewed with particular attention to the $c=1$ conformal matter coupling, and new results on a related problem of dilaton gravity are reported. After finding the physical
Abdalla   +88 more
core   +1 more source

Classical approach in quantum physics

open access: yes, 2010
The application of a classical approach to various quantum problems - the secular perturbation approach to quantization of a hydrogen atom in external fields and a helium atom, the adiabatic switching method for calculation of a semiclassical spectrum of hydrogen atom in crossed electric and magnetic fields, a spontaneous decay of excited states of a ...
openaire   +2 more sources

Quantum computations with atoms in optical lattices: marker qubits and molecular interactions [PDF]

open access: yes, 2004
We develop a scheme for quantum computation with neutral atoms, based on the concept of "marker" atoms, i.e., auxiliary atoms that can be efficiently transported in state-independent periodic external traps to operate quantum gates between physically ...
C. J. Pethick   +10 more
core   +1 more source

Secure Quantum Key Distribution over 421 km of Optical Fiber. [PDF]

open access: yesPhysical Review Letters, 2018
We present a quantum key distribution system with a 2.5 GHz repetition rate using a three-state time-bin protocol combined with a one-decoy approach. Taking advantage of superconducting single-photon detectors optimized for quantum key distribution and ...
Alberto Boaron   +12 more
semanticscholar   +1 more source

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