Few-electron quantum dot circuit with integrated charge read out
... of 50 GHz is applied to P . The microwaves pump current I by absorption of photons. This photon-assisted current shows up as two lines, indicated by the two arrows. The white line (bottom) corresponds to pumping from the left to the right reservoir, the dark line (top) corresponds to pumping in the ...
... of 50 GHz is applied to P . The microwaves pump current I by absorption of photons. This photon-assisted current shows up as two lines, indicated by the two arrows. The white line (bottom) corresponds to pumping from the left to the right reservoir, the dark line (top) corresponds to pumping in the ...
Slide 1
... Classical optimization techniques due to their iterative approach do not perform satisfactorily when they are used to obtain multiple solutions, since it is not guaranteed that different solutions will be obtained even with different starting points in multiple runs of the algorithm. Evolutionary Al ...
... Classical optimization techniques due to their iterative approach do not perform satisfactorily when they are used to obtain multiple solutions, since it is not guaranteed that different solutions will be obtained even with different starting points in multiple runs of the algorithm. Evolutionary Al ...
An exponential separation between quantum and classical one
... A potential separation for a total function? So have we obtained a quadratic separation between quantum and classical 1WCC? Unfortunately not yet... for every group G people have considered so far (e.g. abelian groups), there is in fact a more clever O(log |G|) bit classical protocol! The complexit ...
... A potential separation for a total function? So have we obtained a quadratic separation between quantum and classical 1WCC? Unfortunately not yet... for every group G people have considered so far (e.g. abelian groups), there is in fact a more clever O(log |G|) bit classical protocol! The complexit ...
Niels Bohr - Nobel Lecture
... Planck considered the equilibrium of radiation between a number of systems with the same properties as those on which Lorentz had based his theory of the Zeeman effect, but he could now show not only that classical physics could not account for the phenomena of heat radiation, but also that a comple ...
... Planck considered the equilibrium of radiation between a number of systems with the same properties as those on which Lorentz had based his theory of the Zeeman effect, but he could now show not only that classical physics could not account for the phenomena of heat radiation, but also that a comple ...
Basics of Open String Field Theory
... for a generic string field Λ of ghost number 0, this gauge symmetry is reducible because we can have string fields of any negative ghost number, hence we have to mod out the previous gauge transformation by QBRST –closed string fields of ghost number zero, and so on. This is achieved using BV quant ...
... for a generic string field Λ of ghost number 0, this gauge symmetry is reducible because we can have string fields of any negative ghost number, hence we have to mod out the previous gauge transformation by QBRST –closed string fields of ghost number zero, and so on. This is achieved using BV quant ...
Quantum - National Physical Laboratory
... In the past, implementing a secure communication link based on QKD has required at least two fibres – one for the encrypted data and a second to distribute quantum keys. This has meant that installing QKD in a communication system has required additional ‘dark’ fibre. However, unused fibres are not ...
... In the past, implementing a secure communication link based on QKD has required at least two fibres – one for the encrypted data and a second to distribute quantum keys. This has meant that installing QKD in a communication system has required additional ‘dark’ fibre. However, unused fibres are not ...
oscillations
... suspended vertically from a rigid support as shown in figure. At their free ends, a block of mass m having non-uniform density distribution is suspended so that spring undergoes equal extension In this situation two bodies are pulled down through a small distance y and the system is made to perform ...
... suspended vertically from a rigid support as shown in figure. At their free ends, a block of mass m having non-uniform density distribution is suspended so that spring undergoes equal extension In this situation two bodies are pulled down through a small distance y and the system is made to perform ...
004 Commutators and Time Evolution (the Time Dependent
... If we use any operator Q on a [[upsi 0:03:12]] we are going to get some other animal, phi and we can expand phi, we can say that this is equal to the sum of BII and then this becomes Q operating on the sum of AJJ, this being summed over J, this being summed over I alright? That’s just substituting i ...
... If we use any operator Q on a [[upsi 0:03:12]] we are going to get some other animal, phi and we can expand phi, we can say that this is equal to the sum of BII and then this becomes Q operating on the sum of AJJ, this being summed over J, this being summed over I alright? That’s just substituting i ...
Study on the New Axiomatic Method Giving the Solutions of Hilbert`s
... In this case, Hilbert request that the system of axioms should be consistent and give the problem of proof of its consistency using Hilbert’s program. Nevertheless, this Hilbert’s program failed by the reason of Gödel’s discovery of the “incompleteness theorem”. Therefore, in order to define the c ...
... In this case, Hilbert request that the system of axioms should be consistent and give the problem of proof of its consistency using Hilbert’s program. Nevertheless, this Hilbert’s program failed by the reason of Gödel’s discovery of the “incompleteness theorem”. Therefore, in order to define the c ...
Search for a possible variation of the fine structure constant
... All experiments for a search of space and time variation of fundamental constants suggest two spectroscopic measurements separated in time and space. In the case of the evaluation of astrophysical spectroscopic data, the drift of the Rydberg constant, if it happens, cannot be separated from the red ...
... All experiments for a search of space and time variation of fundamental constants suggest two spectroscopic measurements separated in time and space. In the case of the evaluation of astrophysical spectroscopic data, the drift of the Rydberg constant, if it happens, cannot be separated from the red ...
Wormhole Physics - In Classical and Quantum Theories of Gravity
... interesting and related to observations. But one solution was so strange that Einstein himself was very skeptical about. This solution is called the Schwazchild solution It predicted the existence of Black holes a very dense object having an enormous gravity even spacetime will not make sense becaus ...
... interesting and related to observations. But one solution was so strange that Einstein himself was very skeptical about. This solution is called the Schwazchild solution It predicted the existence of Black holes a very dense object having an enormous gravity even spacetime will not make sense becaus ...
8 Selectivity of the O e
... discrete final states in the remaining nucleus may filter the importance of this type of final state interaction. Essentially all published work on the description of the (e,e 8 pp) reaction employs a relatively simple description of the nuclear structure of the target nucleus. While SRC are modeled ...
... discrete final states in the remaining nucleus may filter the importance of this type of final state interaction. Essentially all published work on the description of the (e,e 8 pp) reaction employs a relatively simple description of the nuclear structure of the target nucleus. While SRC are modeled ...
THE ALMOST IMPOSSIBLE WORLDS IN QUANTUM INFORMATION
... The set is exactly equal to the sum of its elements The interactions between the elements are exactly zero The set is more than the sum of its elements The interactions between the elements are more than zero The sum of the elements is exactly zero and any element as well The set is exactly equal t ...
... The set is exactly equal to the sum of its elements The interactions between the elements are exactly zero The set is more than the sum of its elements The interactions between the elements are more than zero The sum of the elements is exactly zero and any element as well The set is exactly equal t ...
Introduction to the Bethe Ansatz I
... array of electrons with uniform exchange interaction between nearest neighbors. Bethe’s parametrization of the eigenvectors, the Bethe ansatz, has become influential to an extent not imagined at the time. Today, many other quantum many body systems are known to be solvable by some variant of the Bet ...
... array of electrons with uniform exchange interaction between nearest neighbors. Bethe’s parametrization of the eigenvectors, the Bethe ansatz, has become influential to an extent not imagined at the time. Today, many other quantum many body systems are known to be solvable by some variant of the Bet ...
PDF
... typically realized as arrays of qubits, and run-time checks are needed to detect certain error conditions. For instance, out-of-bounds checks are necessary for array accesses, and distinctness checks must be used to ensure i 6= j when applying a binary quantum operation to two qubits i and j. As is ...
... typically realized as arrays of qubits, and run-time checks are needed to detect certain error conditions. For instance, out-of-bounds checks are necessary for array accesses, and distinctness checks must be used to ensure i 6= j when applying a binary quantum operation to two qubits i and j. As is ...
Research Project Quantum Physics
... So light consists of photons: very small light quanta. But what is a photon really? Is it a particle or a wave? Or something in between? The answer is quite astonishing: light is neither a particle nor a wave, while it is both at the same time. This is called the Wave-particle Duality. When it is no ...
... So light consists of photons: very small light quanta. But what is a photon really? Is it a particle or a wave? Or something in between? The answer is quite astonishing: light is neither a particle nor a wave, while it is both at the same time. This is called the Wave-particle Duality. When it is no ...
Universal computation by multi-particle quantum walk
... • Establishes the computational power of interacting many-body systems such as the BoseHubbard model, fermions with nearest neighbour interactions, and more. Our method for performing universal computation exploits the connection between quantum walk and a discrete version of scattering theory [Farh ...
... • Establishes the computational power of interacting many-body systems such as the BoseHubbard model, fermions with nearest neighbour interactions, and more. Our method for performing universal computation exploits the connection between quantum walk and a discrete version of scattering theory [Farh ...
PDF
... One possibility for parameterizing the probabilities in these processes is the set of CDFs belonging to the highly flexible Pearson system of distributions, which themselves satisfy (1.2). The criteria for identifying different members of the Pearson system of functions can be expressed parametrical ...
... One possibility for parameterizing the probabilities in these processes is the set of CDFs belonging to the highly flexible Pearson system of distributions, which themselves satisfy (1.2). The criteria for identifying different members of the Pearson system of functions can be expressed parametrical ...
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.