... spin drag provides a nondissipative mechanism of relaxation of a pure spin current. Interactions are therefore destructive for spin currents. Because robust generation of spin currents is important in view of possible applications in spintronics [5], the limitations arising due to the spin drag effe ...
Syllabus
... dimensionless products, algebraic theory of dimensional analysis, different procedures, (Rayleigh; Buckingham pie-theorem, stepwise, echelon, proportionalities etc.) for the determination of dimensionless groups and its behavior for some boundary value problems; Method of seminude and introduction t ...
... dimensionless products, algebraic theory of dimensional analysis, different procedures, (Rayleigh; Buckingham pie-theorem, stepwise, echelon, proportionalities etc.) for the determination of dimensionless groups and its behavior for some boundary value problems; Method of seminude and introduction t ...
Quantum Superpositions and the Representation of Physical Reality
... of realist physicists themselves. Representational realism attempts to capture exactly this aspect; i.e., the specific way through which realist physicists produce such representational (meta-physical) account of reality. In this respect, the main presupposition of representational realism is that p ...
... of realist physicists themselves. Representational realism attempts to capture exactly this aspect; i.e., the specific way through which realist physicists produce such representational (meta-physical) account of reality. In this respect, the main presupposition of representational realism is that p ...
Comparison of Genetic Algorithm and Quantum Genetic Algorithm
... Evolutionary computation has already been known in computer science since more than 4 decades. More recently, another alternative of evolutionary algorithms was invented: Quantum Genetic Algorithms (QGA). In this paper, we outline the approach of QGA by giving a comparison with Conventional Genetic ...
... Evolutionary computation has already been known in computer science since more than 4 decades. More recently, another alternative of evolutionary algorithms was invented: Quantum Genetic Algorithms (QGA). In this paper, we outline the approach of QGA by giving a comparison with Conventional Genetic ...
The roads not taken: empty waves, wavefunction collapse and
... are correlated not because they act upon one another directly as would be expected for two classically interacting particles but because they are each guided by the wavefunction that carries an imprint of the entire experimental context. This remote action, whereby a detector locates the de Broglie- ...
... are correlated not because they act upon one another directly as would be expected for two classically interacting particles but because they are each guided by the wavefunction that carries an imprint of the entire experimental context. This remote action, whereby a detector locates the de Broglie- ...
The Wigner function and quantum state tomography
... Quantum mechanics is the most complete theory of Nature currently known, but it often conflicts with our classical intuition. A notable deviation between quantum and classical theories is the manner in which the states of systems are specified. Quantum systems are described as vectors (wavefunctions ...
... Quantum mechanics is the most complete theory of Nature currently known, but it often conflicts with our classical intuition. A notable deviation between quantum and classical theories is the manner in which the states of systems are specified. Quantum systems are described as vectors (wavefunctions ...
Adiabatic Geometric Phases and Response Functions
... which entails the semiclassical expression for adiabatic geometric phase for chaotic systems, using (9). The first term comes from the classical time correlation function which is expected to decay exponentially as the dynamics is chaotic. This decay is governed by the largest Liapunov exponent of t ...
... which entails the semiclassical expression for adiabatic geometric phase for chaotic systems, using (9). The first term comes from the classical time correlation function which is expected to decay exponentially as the dynamics is chaotic. This decay is governed by the largest Liapunov exponent of t ...
Quantum circuits for strongly correlated quantum systems
... different way, such that we not only have access to the lowenergy states but to the whole spectrum for certain quantum many-body problems. This allows us to prepare any excited state or thermal state at any temperature, as well as the dynamical evolution of any state for arbitrary times with an effo ...
... different way, such that we not only have access to the lowenergy states but to the whole spectrum for certain quantum many-body problems. This allows us to prepare any excited state or thermal state at any temperature, as well as the dynamical evolution of any state for arbitrary times with an effo ...
QMDuesseldorf - Buffalo Ontology Site
... Gegenstände in ihrer Domäne ermöglicht, ist eine transparente Aufteilung. Objects are real = their supposition supports reliable predictions ...
... Gegenstände in ihrer Domäne ermöglicht, ist eine transparente Aufteilung. Objects are real = their supposition supports reliable predictions ...
A near–quantum-limited Josephson traveling
... these developments have relied on ultra-low-noise Josephson parametric amplifiers (JPAs) (13–15) to detect micro- noise performance of the JTWPA with a noise power techwave frequency signals with a sensitivity approaching the nique and a fiducial quantum measurement, demonstrating minimum allowed by ...
... these developments have relied on ultra-low-noise Josephson parametric amplifiers (JPAs) (13–15) to detect micro- noise performance of the JTWPA with a noise power techwave frequency signals with a sensitivity approaching the nique and a fiducial quantum measurement, demonstrating minimum allowed by ...
Photon pairs with coherence time exceeding 1 μs
... longitudinal length L 1.5 cm and a temperature of 100 μK. The experiment is run periodically with 4.5 ms MOT time followed by 0.5 ms biphoton generation time in each cycle. At end of the MOT time, the trapping and repumping lasers (not shown in Fig. 1) are switched off and all the atoms are optica ...
... longitudinal length L 1.5 cm and a temperature of 100 μK. The experiment is run periodically with 4.5 ms MOT time followed by 0.5 ms biphoton generation time in each cycle. At end of the MOT time, the trapping and repumping lasers (not shown in Fig. 1) are switched off and all the atoms are optica ...
Quantum Physics 2005
... • This principle states that you cannot know both the position and momentum of a particle simultaneously to arbitrary accuracy. – There are many approaches to this idea. Here are two. • The act of measuring position requires that the particle intact with a probe, which imparts momentum to the partic ...
... • This principle states that you cannot know both the position and momentum of a particle simultaneously to arbitrary accuracy. – There are many approaches to this idea. Here are two. • The act of measuring position requires that the particle intact with a probe, which imparts momentum to the partic ...
1 Summary of PhD Thesis It is well known that the language of the
... It is well known that the language of the physics is mathematics, but also something more 1 . Mathematical structures using by physicists with so great success not only describe nature, but also model its internal structure (so called mathematical modeling). Thanks to this incomprehensible up to thi ...
... It is well known that the language of the physics is mathematics, but also something more 1 . Mathematical structures using by physicists with so great success not only describe nature, but also model its internal structure (so called mathematical modeling). Thanks to this incomprehensible up to thi ...
Does Quantum Mechanics Clash with the Equivalence Principle
... Note that, unlike EP1, this statement constrains the totality of physical systems, not only the mechanical behavior of very special systems, i.e., free test particles. As such, it is a more general principle and potentially of greater relevance to an assessment of the geometric character of gravity ...
... Note that, unlike EP1, this statement constrains the totality of physical systems, not only the mechanical behavior of very special systems, i.e., free test particles. As such, it is a more general principle and potentially of greater relevance to an assessment of the geometric character of gravity ...
Quantum numbers for relative ground states of antiferromagnetic
... given by (1) extraordinary shift quantum numbers, which supplement the ordinary ones to the complete set {k} = {0, 1, 2}. This means an additional degeneracy of the respective relative ground state, which is caused by the high symmetry of the Heisenberg triangle. For even N the k-rule (1) results in ...
... given by (1) extraordinary shift quantum numbers, which supplement the ordinary ones to the complete set {k} = {0, 1, 2}. This means an additional degeneracy of the respective relative ground state, which is caused by the high symmetry of the Heisenberg triangle. For even N the k-rule (1) results in ...
24 Interferometry with Macromolecules: Quantum Paradigms Tested
... entanglement, the inseparable correlation of at least two quantum systems – which can also be part of the same physical object, as in the entanglement of internal and external degrees of freedom. This property will become relevant in the context of decoherence, as discussed further below. In the dou ...
... entanglement, the inseparable correlation of at least two quantum systems – which can also be part of the same physical object, as in the entanglement of internal and external degrees of freedom. This property will become relevant in the context of decoherence, as discussed further below. In the dou ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: