Supersymmetric quantum mechanics and new potentials
... with $+,, given by (16) and the ground state ($+) is evaluated by nsing (14) ...
... with $+,, given by (16) and the ground state ($+) is evaluated by nsing (14) ...
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... the third-order nonlinearity (χ(3) ) of the material (silica glass in the case of optical fibers) to generate two daughter photons, called signal and idler photons, respectively. The frequencies of the daughter photons are symmetrically displaced from the pump frequency, satisfying the energy conser ...
... the third-order nonlinearity (χ(3) ) of the material (silica glass in the case of optical fibers) to generate two daughter photons, called signal and idler photons, respectively. The frequencies of the daughter photons are symmetrically displaced from the pump frequency, satisfying the energy conser ...
Von Neumann`s Impossibility Proof: Mathematics in - Philsci
... qualitative nature, so that they are not so counterintuitive as may appear at first sight. Further, he promises us to investigate in depth the issue of whether the statistical character of the theory can be understood as a manifestation of our lack of knowledge; in which case the existence of “hidde ...
... qualitative nature, so that they are not so counterintuitive as may appear at first sight. Further, he promises us to investigate in depth the issue of whether the statistical character of the theory can be understood as a manifestation of our lack of knowledge; in which case the existence of “hidde ...
From quantum foundations to quantum information protocols and back PhD thesis
... is impossible with classical resources - is indeed possible via nonlocality. This establishes in our opinion the strongest evidence for a truly random event in nature so far. Secondly, we prove that there exist finite events where quantum theory gives predictions as complete as any no-signaling theo ...
... is impossible with classical resources - is indeed possible via nonlocality. This establishes in our opinion the strongest evidence for a truly random event in nature so far. Secondly, we prove that there exist finite events where quantum theory gives predictions as complete as any no-signaling theo ...
generalized numerical ranges and quantum error correction
... S(H) such that span { I, A1 , A2 , A3 } has dimension 4, there is always an A4 ∈ S(H) for which Λ1 ( A1 , . . . , A4 ) is not convex. In the following, we show that Λk (A) is always star-shaped if dim H is sufficiently large. Moreover, it always contains the convex hull of Λk̂ (A) for k̂ = (m + 2)k. ...
... S(H) such that span { I, A1 , A2 , A3 } has dimension 4, there is always an A4 ∈ S(H) for which Λ1 ( A1 , . . . , A4 ) is not convex. In the following, we show that Λk (A) is always star-shaped if dim H is sufficiently large. Moreover, it always contains the convex hull of Λk̂ (A) for k̂ = (m + 2)k. ...
Infinite-randomness quantum critical points induced by dissipation
... quantum many-particle systems. At zero-temperature quantum phase transitions, the interplay between large-scale quantum fluctuations and random fluctuations leads to much more dramatic disorder effects than at classical thermal phase transitions, resulting in various exotic phenomena such as quantum ...
... quantum many-particle systems. At zero-temperature quantum phase transitions, the interplay between large-scale quantum fluctuations and random fluctuations leads to much more dramatic disorder effects than at classical thermal phase transitions, resulting in various exotic phenomena such as quantum ...
Linear spin wave theory - Paul Scherrer Institut
... Diagonalization of the quadratic form New operator b with the following transformation: b =ua + va+ b + =ua+ + va The new operator has to fulfill the commutation relations: [b, b + ] = 1 → u2 + v 2 = 1 With the right parameter choice: X ...
... Diagonalization of the quadratic form New operator b with the following transformation: b =ua + va+ b + =ua+ + va The new operator has to fulfill the commutation relations: [b, b + ] = 1 → u2 + v 2 = 1 With the right parameter choice: X ...
feofilov-cern-15-Oct-09
... “Gluon-gluon string formation” - probability that an additional interaction in the multiple interaction formalism gives two gluons, either as described in PARP(85) or as a closed gluon loop. Remaining fraction is supposed to consist of quark–antiquark pairs ...
... “Gluon-gluon string formation” - probability that an additional interaction in the multiple interaction formalism gives two gluons, either as described in PARP(85) or as a closed gluon loop. Remaining fraction is supposed to consist of quark–antiquark pairs ...
Characterizing the Performance Effect of Trials and Rotations in
... algorithms. Intuitively, QPE allows quantum algorithms to find the hidden structure in certain kinds of problems. In particular, Shor’s well-known algorithm for factoring the product of two primes uses QPE. Simulation algorithms, such as Ground State Estimation (GSE) for quantum chemistry, also use ...
... algorithms. Intuitively, QPE allows quantum algorithms to find the hidden structure in certain kinds of problems. In particular, Shor’s well-known algorithm for factoring the product of two primes uses QPE. Simulation algorithms, such as Ground State Estimation (GSE) for quantum chemistry, also use ...
Singlet-triplet spin blockade and charge sensing in a few
... 共1,1兲 to the 共0,2兲 state 共ordered pairs indicate electron occupancy in each dot兲 is blockaded, while the opposite bias case, involving transitions from 共0,2兲 to 共1,1兲 proceeds freely. Rectification is a direct consequence of spin selection rules.5 Spin blockade of this type can be understood by cons ...
... 共1,1兲 to the 共0,2兲 state 共ordered pairs indicate electron occupancy in each dot兲 is blockaded, while the opposite bias case, involving transitions from 共0,2兲 to 共1,1兲 proceeds freely. Rectification is a direct consequence of spin selection rules.5 Spin blockade of this type can be understood by cons ...
Sunday 07 December Monday 08 December AIPC 2014 Conference Program (draft)
... CPT and Lorentz symmetry ...
... CPT and Lorentz symmetry ...
Simulating Space and Time
... If objects only “moved” with respect to each other, without matter there would be no space. An empty space has no “where” to put things, and distance is just the length between two marks on a platinum-iridium bar in Paris. So is space something or nothing? Newton’s reply to Leibniz was a hanging buc ...
... If objects only “moved” with respect to each other, without matter there would be no space. An empty space has no “where” to put things, and distance is just the length between two marks on a platinum-iridium bar in Paris. So is space something or nothing? Newton’s reply to Leibniz was a hanging buc ...
Quantum Search of Spatial Regions
... parallel? Then it becomes trivial to show that the search time is limited only by the radius of the database, so the algorithms of this paper are unnecessary. Our response is that, while there might be n ‘passive’ computing elements (capable of storing data), there might be many fewer ‘active’ eleme ...
... parallel? Then it becomes trivial to show that the search time is limited only by the radius of the database, so the algorithms of this paper are unnecessary. Our response is that, while there might be n ‘passive’ computing elements (capable of storing data), there might be many fewer ‘active’ eleme ...
The Physics of Information
... states that it is impossible to have a machine whose sole effect is to convert heat into work. We can use heat to do work, but to do so we must inevitably make other alterations, e.g. letting heat flow from hot to cold and thereby bringing the system closer to equilibrium. Clausius’ formulation says ...
... states that it is impossible to have a machine whose sole effect is to convert heat into work. We can use heat to do work, but to do so we must inevitably make other alterations, e.g. letting heat flow from hot to cold and thereby bringing the system closer to equilibrium. Clausius’ formulation says ...
![Theoretical Physics II B – Quantum Mechanics [1cm] Lecture 8](http://s1.studyres.com/store/data/004850917_1-fa2fc63a7feab663fd3f9ddfe650a8b4-300x300.png)
Theoretical Physics II B – Quantum Mechanics [1cm] Lecture 8
... is strikingly similar to the classical equations of motion in the same setup (explicitly time-independent Hamiltonians), which, using Poisson brackets, can be written as dO = [O, H]classical dt leading to the assumption [ , ]quantum [ , ]classical ←→ i~ It is worth noting, though, that this stretche ...
... is strikingly similar to the classical equations of motion in the same setup (explicitly time-independent Hamiltonians), which, using Poisson brackets, can be written as dO = [O, H]classical dt leading to the assumption [ , ]quantum [ , ]classical ←→ i~ It is worth noting, though, that this stretche ...
- Europhysics News
... Figure 4 shows a sequence of reproducible switching events between an insulation “off-state” and a quantized conducting “on-state” (at 1 G 0 ), where the quantum conductance (red curves) of the switch is controlled by the gate potential (blue curves), as commonly observed in transistors. As calculat ...
... Figure 4 shows a sequence of reproducible switching events between an insulation “off-state” and a quantized conducting “on-state” (at 1 G 0 ), where the quantum conductance (red curves) of the switch is controlled by the gate potential (blue curves), as commonly observed in transistors. As calculat ...
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: