Approximate Quantum Error-Correcting Codes and Secret Sharing
... Secret Sharing and Quantum Error Correction Classically, an (n, d)-secret sharing scheme splits a secret into n pieces so that no d−1 shares reveal any information about the secret, but any d shares allow one to reconstruct it. Such a scheme is already an error-correcting code, since it allows one ...
... Secret Sharing and Quantum Error Correction Classically, an (n, d)-secret sharing scheme splits a secret into n pieces so that no d−1 shares reveal any information about the secret, but any d shares allow one to reconstruct it. Such a scheme is already an error-correcting code, since it allows one ...
Quantum fluctuations in modulated nonlinear oscillators Vittorio Peano and M I Dykman
... electrodynamics. Vibrational systems of the new generation are mesoscopic. On the one hand, they can be individually accessed, similar to macroscopic systems, and are well-characterized. On the other hand, since they are small, they experience comparatively strong fluctuations of thermal and quantum ...
... electrodynamics. Vibrational systems of the new generation are mesoscopic. On the one hand, they can be individually accessed, similar to macroscopic systems, and are well-characterized. On the other hand, since they are small, they experience comparatively strong fluctuations of thermal and quantum ...
ppt
... The Density of States for a Single Free Particle in 1D The energy spectrum for the translational motion of a molecule in free space is continuous. We will use a trick that is common in quantum mechanics: assume that a particle is in a large box (energy quantization) with zero potential energy (tota ...
... The Density of States for a Single Free Particle in 1D The energy spectrum for the translational motion of a molecule in free space is continuous. We will use a trick that is common in quantum mechanics: assume that a particle is in a large box (energy quantization) with zero potential energy (tota ...
4 - ckw
... temperature is lowered. Forces of cohesion tend to overcome thermal motion, and atoms rearrange themselves in a more ordered state. Phase changes occur abruptly at some critical temperature although evidence that one will occur can be found on a microscopic scale as the critical temperature is appro ...
... temperature is lowered. Forces of cohesion tend to overcome thermal motion, and atoms rearrange themselves in a more ordered state. Phase changes occur abruptly at some critical temperature although evidence that one will occur can be found on a microscopic scale as the critical temperature is appro ...
XXZ Dao-Xin Yao, Y. L. Loh, and E. W. Carlson Michael Ma
... Geometrically frustrated spin systems hold promise for finding new phases of matter, such as classical and quantum spin liquid ground states. Of considerable interest has been the discovery of a stable phase with deconfined spinons in a model of quantum dimers on the 共geometrically frustrated兲 trian ...
... Geometrically frustrated spin systems hold promise for finding new phases of matter, such as classical and quantum spin liquid ground states. Of considerable interest has been the discovery of a stable phase with deconfined spinons in a model of quantum dimers on the 共geometrically frustrated兲 trian ...
- Philsci-Archive
... to prefer more formal approaches, relying not on the set of theories of the so-called standard model but on tentative formal approaches that promise to give to quantum field theory the solid mathematical foundations that it does not have (see e.g. Fraser 2009). The particular characteristic of these ...
... to prefer more formal approaches, relying not on the set of theories of the so-called standard model but on tentative formal approaches that promise to give to quantum field theory the solid mathematical foundations that it does not have (see e.g. Fraser 2009). The particular characteristic of these ...
A generalized entropy measuring quantum localization
... et al. [13] showed that the, so-called, cantori can also act as barriers like tori. A general (semiclassical) theory for this phenomenon is, however, still missing, at least to the knowledge of the authors. Besides these ``stronger types'' of localization, which are characterized by an exponential d ...
... et al. [13] showed that the, so-called, cantori can also act as barriers like tori. A general (semiclassical) theory for this phenomenon is, however, still missing, at least to the knowledge of the authors. Besides these ``stronger types'' of localization, which are characterized by an exponential d ...
Quantum Theory of Molecular Magnetism - cond
... The synthesis of magnetic molecules shows continuous progress for the past 20 years [3–13]. Each of the identical molecular units can contain as few as two and up to several dozens of paramagnetic ions (“spins”). One of the largest paramagnetic molecules synthesized to date, the polyoxometalate {Mo7 ...
... The synthesis of magnetic molecules shows continuous progress for the past 20 years [3–13]. Each of the identical molecular units can contain as few as two and up to several dozens of paramagnetic ions (“spins”). One of the largest paramagnetic molecules synthesized to date, the polyoxometalate {Mo7 ...
Microscopic description of two dimensional dipolar quantum gases Universitat Polit` ecnica de Catalunya
... will be used as a trial wave function for Monte Carlo simulations of the bulk two-dimensional system of bosonic dipoles. In the first part of this work we have studied the low-density dipolar Bose gas and we find that the anisotropy has an almost negligible impact on the ground state properties of t ...
... will be used as a trial wave function for Monte Carlo simulations of the bulk two-dimensional system of bosonic dipoles. In the first part of this work we have studied the low-density dipolar Bose gas and we find that the anisotropy has an almost negligible impact on the ground state properties of t ...
Slide 1
... Is it possible to improve even more in the <140 GeV region? De Roeck, Khoze, Martin and Ryskin propose to sidestep pileup even at high luminosity by using tracking information. Could then allow to use H->bb decay channel. Identify primary vertex and cut on tracks emanating from there, e.g. no tra ...
... Is it possible to improve even more in the <140 GeV region? De Roeck, Khoze, Martin and Ryskin propose to sidestep pileup even at high luminosity by using tracking information. Could then allow to use H->bb decay channel. Identify primary vertex and cut on tracks emanating from there, e.g. no tra ...
Modernizing Quantum Annealing using Local Searches
... energy and T is an effective temperature. Because Metropolis updates obey detailed balance, they can be used to sample a thermal distribution as well as to find ground states, assuming all other update steps also obey detailed balance. Simulated Annealing (SA) In SA an initial state is chosen random ...
... energy and T is an effective temperature. Because Metropolis updates obey detailed balance, they can be used to sample a thermal distribution as well as to find ground states, assuming all other update steps also obey detailed balance. Simulated Annealing (SA) In SA an initial state is chosen random ...
Advanced Quantum Mechanics
... The following is an incomplete list of the most important families of scattering experiments. . Elastic scattering off immobile targets: here, the target is effectively so heavy that its mass can be considered infinite. In such cases, scattering is dominantly elastic, ∆E = −∆ = 0. The scattering ta ...
... The following is an incomplete list of the most important families of scattering experiments. . Elastic scattering off immobile targets: here, the target is effectively so heavy that its mass can be considered infinite. In such cases, scattering is dominantly elastic, ∆E = −∆ = 0. The scattering ta ...
Renormalization group
In theoretical physics, the renormalization group (RG) refers to a mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales. In particle physics, it reflects the changes in the underlying force laws (codified in a quantum field theory) as the energy scale at which physical processes occur varies, energy/momentum and resolution distance scales being effectively conjugate under the uncertainty principle (cf. Compton wavelength).A change in scale is called a ""scale transformation"". The renormalization group is intimately related to ""scale invariance"" and ""conformal invariance"", symmetries in which a system appears the same at all scales (so-called self-similarity). (However, note that scale transformations are included in conformal transformations, in general: the latter including additional symmetry generators associated with special conformal transformations.)As the scale varies, it is as if one is changing the magnifying power of a notional microscope viewing the system. In so-called renormalizable theories, the system at one scale will generally be seen to consist of self-similar copies of itself when viewed at a smaller scale, with different parameters describing the components of the system. The components, or fundamental variables, may relate to atoms, elementary particles, atomic spins, etc. The parameters of the theory typically describe the interactions of the components. These may be variable ""couplings"" which measure the strength of various forces, or mass parameters themselves. The components themselves may appear to be composed of more of the self-same components as one goes to shorter distances.For example, in quantum electrodynamics (QED), an electron appears to be composed of electrons, positrons (anti-electrons) and photons, as one views it at higher resolution, at very short distances. The electron at such short distances has a slightly different electric charge than does the ""dressed electron"" seen at large distances, and this change, or ""running,"" in the value of the electric charge is determined by the renormalization group equation.