Certainty and Uncertainty in Quantum Information Processing
... universe”. Popular accounts of quantum mechanics, and some scholarly articles, give the impression that quantum mechanics, at least in the many worlds interpretation, implies that everything happens in some universe. A typical quote (Deutsch 1998): “There are even universes in which a given object ...
... universe”. Popular accounts of quantum mechanics, and some scholarly articles, give the impression that quantum mechanics, at least in the many worlds interpretation, implies that everything happens in some universe. A typical quote (Deutsch 1998): “There are even universes in which a given object ...
Isotopic effect in B-like and Be
... corrections due to the finite nuclear mass in a recent calculation made by Tupitsyn [TSC 03], in which major inconsistencies of earlier theoretical methods have been corrected for the first time. The finite mass, or recoil effect, composed of the normal mass shift (N M S), and the specific mass shif ...
... corrections due to the finite nuclear mass in a recent calculation made by Tupitsyn [TSC 03], in which major inconsistencies of earlier theoretical methods have been corrected for the first time. The finite mass, or recoil effect, composed of the normal mass shift (N M S), and the specific mass shif ...
A Brief Analysis of the Mass-Energy Relation
... Throughout the last decade of the 19th century, J. J. Thomson carried out a series of successful experiments to demonstrate the corpuscular nature of cathode rays, and to determine the mass-tocharge ratio of the electron [Ref. #1.a & 1.b]. Undoubtedly, the discovery of the electron, or as J. J. Thom ...
... Throughout the last decade of the 19th century, J. J. Thomson carried out a series of successful experiments to demonstrate the corpuscular nature of cathode rays, and to determine the mass-tocharge ratio of the electron [Ref. #1.a & 1.b]. Undoubtedly, the discovery of the electron, or as J. J. Thom ...
Superconducting Circuits and Quantum Computation
... large-amplitude harmonic excitation sweeps it through this avoided crossing two times per period. The induced Landau-Zener (LZ) transitions at the avoided crossing cause coherent population transfer between the eigenstates, and the accumulated phase between LZ transitions varies with the driving amp ...
... large-amplitude harmonic excitation sweeps it through this avoided crossing two times per period. The induced Landau-Zener (LZ) transitions at the avoided crossing cause coherent population transfer between the eigenstates, and the accumulated phase between LZ transitions varies with the driving amp ...
Fluctuations of the Electromagnetic Vacuum Field or radiation
... Whether zero-point fluctuations of the electromagnetic field are physically real has been the issue of debate among physicists in the 20th century. Although opinion is now overwhelmingly in their favor, the strength of the evidence on which this opinion relies is still occasionally challenged, 1 and ...
... Whether zero-point fluctuations of the electromagnetic field are physically real has been the issue of debate among physicists in the 20th century. Although opinion is now overwhelmingly in their favor, the strength of the evidence on which this opinion relies is still occasionally challenged, 1 and ...
Fractionalization, Topological Order, and
... emergence of a collective excitation having fractional quantum numbers with respect to the elementary particles (such as electrons), in a strongly correlated system. The notion of fractionalization is not only fascinating in itself, but also has been related to other intriguing concepts in theoretic ...
... emergence of a collective excitation having fractional quantum numbers with respect to the elementary particles (such as electrons), in a strongly correlated system. The notion of fractionalization is not only fascinating in itself, but also has been related to other intriguing concepts in theoretic ...
Glassy Chimeras Could Be Blind to Quantum Speedup:
... Recently, a programmable quantum annealing machine has been built that minimizes the cost function of hard optimization problems by, in principle, adiabatically quenching quantum fluctuations. Tests performed by different research teams have shown that, indeed, the machine seems to exploit quantum e ...
... Recently, a programmable quantum annealing machine has been built that minimizes the cost function of hard optimization problems by, in principle, adiabatically quenching quantum fluctuations. Tests performed by different research teams have shown that, indeed, the machine seems to exploit quantum e ...
Spontaneous Formation of Magnetic Moments and Dephasing in Two-Dimensional Disordered Systems
... channel, which is enhanced into an ELS with about one electron of charge due to Coulomb repulsion and exchange interactions between electrons. The repulsion of electrons by the ELS (a precursor of the Coulomb blockade) can thus reduce the conductance, thereby explaining the observation of the 0.7 a ...
... channel, which is enhanced into an ELS with about one electron of charge due to Coulomb repulsion and exchange interactions between electrons. The repulsion of electrons by the ELS (a precursor of the Coulomb blockade) can thus reduce the conductance, thereby explaining the observation of the 0.7 a ...
The additivity problem in quantum information theory
... A closely related issue is the additivity of the capacity-related quantities for the memoryless quantum channels with respect to entangled encodings. Should the additivity fail, this would mean that applying entangled inputs to several independent uses of a quantum channel may result in superadditiv ...
... A closely related issue is the additivity of the capacity-related quantities for the memoryless quantum channels with respect to entangled encodings. Should the additivity fail, this would mean that applying entangled inputs to several independent uses of a quantum channel may result in superadditiv ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.