Dissipative decoherence in the Grover algorithm
... hardware [11]. This second type of errors, e.g. static imperfections, gives a more rapid decay of fidelity as it has been shown in [12,10]. In the case of quantum algorithms for a complex dynamic these imperfections lead to the fidelity decrease described by a universal decay law given by the random ...
... hardware [11]. This second type of errors, e.g. static imperfections, gives a more rapid decay of fidelity as it has been shown in [12,10]. In the case of quantum algorithms for a complex dynamic these imperfections lead to the fidelity decrease described by a universal decay law given by the random ...
Testing quantum correlations versus single
... (indeed, Bob’s output is assumed to depend on Alice’s input: her input must therefore have been defined before Bob’s output materializes). Any model based on such an assumption had already been falsified by the so-called before–before experiment11,12 , as Suarez emphatically stressed13 . However, as ...
... (indeed, Bob’s output is assumed to depend on Alice’s input: her input must therefore have been defined before Bob’s output materializes). Any model based on such an assumption had already been falsified by the so-called before–before experiment11,12 , as Suarez emphatically stressed13 . However, as ...
dark energy stars - at www.arxiv.org.
... nucleons have energies that exceed this limit for both collapsed stars and the compact objects at the center of galaxies. Thus a signature for the existence of dark energy stars will be nucleon decay [4]. In the Georgi-Glashow grand unified model nucleons can decay; e. g. via a process where a quark ...
... nucleons have energies that exceed this limit for both collapsed stars and the compact objects at the center of galaxies. Thus a signature for the existence of dark energy stars will be nucleon decay [4]. In the Georgi-Glashow grand unified model nucleons can decay; e. g. via a process where a quark ...
Measurement Problem - The Information Philosopher
... new information. If the apparatus were describable only by classical deterministic laws, no new information could come into existence. The apparatus need only be adequately determined, that is to say, “classical” to a sufficient degree of accuracy. As Landau and Lifshitz described it in their 1958 t ...
... new information. If the apparatus were describable only by classical deterministic laws, no new information could come into existence. The apparatus need only be adequately determined, that is to say, “classical” to a sufficient degree of accuracy. As Landau and Lifshitz described it in their 1958 t ...
Book Reviews
... shows that the EPR-type experiments ª must transpire in a space-time framework that permits violations of special relativity, or which allows for superluminal (faster-thanlight) interaction between particles of any distance from each otherº (p. 8). Although something like this is often said in popul ...
... shows that the EPR-type experiments ª must transpire in a space-time framework that permits violations of special relativity, or which allows for superluminal (faster-thanlight) interaction between particles of any distance from each otherº (p. 8). Although something like this is often said in popul ...
6 Compact quantum spaces: “fuzzy spaces”
... In this section, we discuss some examples of compact quantized symplectic (or Poisson) spaces. These are locally “the same“ as the standard quantization of R2n as discussed before, but they are in fact simpler: they contain only finitely many ”quantum cells“, the corresponding Hilbert space is simply ...
... In this section, we discuss some examples of compact quantized symplectic (or Poisson) spaces. These are locally “the same“ as the standard quantization of R2n as discussed before, but they are in fact simpler: they contain only finitely many ”quantum cells“, the corresponding Hilbert space is simply ...
It is natural to think of quantum computations as multiparticle
... It is known that the dimensions of the physical system needed to encode a bit of information are becoming smaller and smaller, going towards the dimensions of a single atom. At atomic scale the laws of quantum mechanics govern the behaviour of physical systems. It turns out that quantum systems used ...
... It is known that the dimensions of the physical system needed to encode a bit of information are becoming smaller and smaller, going towards the dimensions of a single atom. At atomic scale the laws of quantum mechanics govern the behaviour of physical systems. It turns out that quantum systems used ...
Approximation Methods
... Dr.Eman Zakaria Hegazy Quantum Mechanics and Statistical Thermodynamics Lecture 18 ...
... Dr.Eman Zakaria Hegazy Quantum Mechanics and Statistical Thermodynamics Lecture 18 ...
Document
... A beam of silver atoms sent through a non-uniform magnetic field was split into two discrete components. Classically, it should be spread out because the magnetic moment of the atom can have any orientation. QM says if it is due to orbital angular momentum, there should be an odd number of component ...
... A beam of silver atoms sent through a non-uniform magnetic field was split into two discrete components. Classically, it should be spread out because the magnetic moment of the atom can have any orientation. QM says if it is due to orbital angular momentum, there should be an odd number of component ...
Quantum design
... Such measurement from the viewpoint of the given space Cn is called positive operator valued measurement or POVM. Solution to the problem would then be provided by a symmetric informationally complete POVM (SIC POVM) – if it exists. ...
... Such measurement from the viewpoint of the given space Cn is called positive operator valued measurement or POVM. Solution to the problem would then be provided by a symmetric informationally complete POVM (SIC POVM) – if it exists. ...
Colloquium on "Many Worlds Interpretation"
... The multi-universe interpretation (which should rather be called multi-consciousness interpretation) seems to be the only interpretation of a universal quantum theory (with an exact Schrödinger equation) that is compatible with the way the world is perceived. However, because of quantum non-locality ...
... The multi-universe interpretation (which should rather be called multi-consciousness interpretation) seems to be the only interpretation of a universal quantum theory (with an exact Schrödinger equation) that is compatible with the way the world is perceived. However, because of quantum non-locality ...
In the beginning - North Allegheny School District
... These simple notions seemed obvious, necessary even. Most people believed that for physics to work, it had to be based on such solid and unshakable foundations. Then on 19 October 1900, physicist Max Planck made a ground-breaking presentation to the German Physical Society. Planck was a sober man an ...
... These simple notions seemed obvious, necessary even. Most people believed that for physics to work, it had to be based on such solid and unshakable foundations. Then on 19 October 1900, physicist Max Planck made a ground-breaking presentation to the German Physical Society. Planck was a sober man an ...
In simple terms, what does the Stern
... (http://bit.ly/95dD1S). There is simply not enough information within the quantum system to simultaneously define all observables. The possibility that there may be hidden variables was considered but Bell's theorem disproved this (http://bit.ly/d3pWh8). Hence there is an abstract quantum state, whi ...
... (http://bit.ly/95dD1S). There is simply not enough information within the quantum system to simultaneously define all observables. The possibility that there may be hidden variables was considered but Bell's theorem disproved this (http://bit.ly/d3pWh8). Hence there is an abstract quantum state, whi ...
The Quantum Spin Hall Effect
... • Theoretical predictions of the intrinsic spin Hall effect (Science 2003, PRL 2004). • The spin Hall effect has now been experimentally observed. (Science 2004, PRL ...
... • Theoretical predictions of the intrinsic spin Hall effect (Science 2003, PRL 2004). • The spin Hall effect has now been experimentally observed. (Science 2004, PRL ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).