"Loop Quantum Gravity" (Rovelli)
... order to take into account what we have learned with both our present "fundamental" theories. The difference between the formulation of the problem of quantum gravity given by a highenergy physicist and a relativist derives therefore from a different evaluation of general relativity. For the first, ...
... order to take into account what we have learned with both our present "fundamental" theories. The difference between the formulation of the problem of quantum gravity given by a highenergy physicist and a relativist derives therefore from a different evaluation of general relativity. For the first, ...
Research Proposal for a Quantum Computer Programming
... acting upon them then the Universe would be completely predictable. Under this worldview the only thing that keeps the Universe from being predictable is the shear complexity of the system. This classical view of the world lasted for hundreds of years until the late nineteenth and early twentieth ce ...
... acting upon them then the Universe would be completely predictable. Under this worldview the only thing that keeps the Universe from being predictable is the shear complexity of the system. This classical view of the world lasted for hundreds of years until the late nineteenth and early twentieth ce ...
Aalborg Universitet Quantum Organizational World-Making through Material Emobided Storytelling Practices
... and implementation of end-states and thus occupation of the world, dwelling relates to being-in-theworld, to inhabit, to engage in and to live life. According to Heidegger, we can only build, if we are capable of dwelling. The dwelling approach is rooted in Heidegger’s lifeworld ontology, which will ...
... and implementation of end-states and thus occupation of the world, dwelling relates to being-in-theworld, to inhabit, to engage in and to live life. According to Heidegger, we can only build, if we are capable of dwelling. The dwelling approach is rooted in Heidegger’s lifeworld ontology, which will ...
Quantum information processing beyond ten ion
... of atoms. In 1926, Schrödinger provided an equation to describe physics at an atomic scale [2] - work for which he received a Nobel prize in 1933. His eponymous equation describes particles and photons, and quantum mechanics in general, in terms of wave phenomena. Here, quantum effects need not only ...
... of atoms. In 1926, Schrödinger provided an equation to describe physics at an atomic scale [2] - work for which he received a Nobel prize in 1933. His eponymous equation describes particles and photons, and quantum mechanics in general, in terms of wave phenomena. Here, quantum effects need not only ...
Relativistic quantum information theory and quantum reference frames
... phenomena where both quantum and gravitational effects are important. There is research into developing a fundamentally new theory that will combine the phenomena and experimental predictions from both of these existing theories: a theory of quantum gravity. This would be a theory of microscopic mat ...
... phenomena where both quantum and gravitational effects are important. There is research into developing a fundamentally new theory that will combine the phenomena and experimental predictions from both of these existing theories: a theory of quantum gravity. This would be a theory of microscopic mat ...
How the Laws of Physics Lie
... Experiments are made to isolate true causes and to eliminate false starts. That is what is right about Mill's ‘methods’. Where can such an idea make a difference? I think these are just the kinds of considerations that need to be brought to current philosophical debates about quantum electrodynamic ...
... Experiments are made to isolate true causes and to eliminate false starts. That is what is right about Mill's ‘methods’. Where can such an idea make a difference? I think these are just the kinds of considerations that need to be brought to current philosophical debates about quantum electrodynamic ...
Green Function Techniques in the Treatment of Quantum Transport
... known. Quantum transport through noninteracting system can be considered using the famous Landauer-Büttiker method [85–94], which establishes the fundamental relation between the wave functions (scattering amplitudes) of a system and its conducting properties. The method can be applied to find the ...
... known. Quantum transport through noninteracting system can be considered using the famous Landauer-Büttiker method [85–94], which establishes the fundamental relation between the wave functions (scattering amplitudes) of a system and its conducting properties. The method can be applied to find the ...
Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits M. D. Shulman
... quantum state, we evaluate another measure of entanglement, the Bell state fidelity, F ≡ 〈Ψent |ρ|Ψent 〉. This may be interpreted as the probability of measuring our two-qubit state in desired |Ψent 〉. Additionally, for all non-entangled states one can show that F ≤ 0.5 [23, 24]. In terms of the Pau ...
... quantum state, we evaluate another measure of entanglement, the Bell state fidelity, F ≡ 〈Ψent |ρ|Ψent 〉. This may be interpreted as the probability of measuring our two-qubit state in desired |Ψent 〉. Additionally, for all non-entangled states one can show that F ≤ 0.5 [23, 24]. In terms of the Pau ...
Shankar`s Principles of Quantum Mechanics
... special relativity or mechanics, a typical student about to learn quantum mechanics seldom has any familiarity with the mathematical language in which the postulates are stated. I agree with these people that this problem is real, but I differ in my belief that it should and can be overcome. This bo ...
... special relativity or mechanics, a typical student about to learn quantum mechanics seldom has any familiarity with the mathematical language in which the postulates are stated. I agree with these people that this problem is real, but I differ in my belief that it should and can be overcome. This bo ...
Violation of Leggett-Garg inequalities in quantum measurements
... be positive. This requirement results in the LGIs. Specifically, the LGI given by Eq. (1) simply describes the requirement that the probability Pψ (−1, +1) for the measurement outcomes s2 = −1 and s3 = +1 should be positive. Interestingly, fundamental quantum mechanics seems to suggest that these jo ...
... be positive. This requirement results in the LGIs. Specifically, the LGI given by Eq. (1) simply describes the requirement that the probability Pψ (−1, +1) for the measurement outcomes s2 = −1 and s3 = +1 should be positive. Interestingly, fundamental quantum mechanics seems to suggest that these jo ...
Aspects of quantum information theory
... words the distinction between carriers of classical and quantum information becomes essential. This approach is justified by the observation that a lossless conversion of quantum information into classical information is in the above sense not possible. Therefore, quantum information is a new kind o ...
... words the distinction between carriers of classical and quantum information becomes essential. This approach is justified by the observation that a lossless conversion of quantum information into classical information is in the above sense not possible. Therefore, quantum information is a new kind o ...
An important problem, not discussed so far by other authors, is the
... illustrate the most important notions. Section 3 describes the general problem of synthesis of quantum circuits (called also quantum arrays) from primitive quantum gates, especially using evolutionary algorithms. Section 4 presents decomposition of gates to smaller primitives related to the cost of ...
... illustrate the most important notions. Section 3 describes the general problem of synthesis of quantum circuits (called also quantum arrays) from primitive quantum gates, especially using evolutionary algorithms. Section 4 presents decomposition of gates to smaller primitives related to the cost of ...
Why Physicists are still Important.
... As the system evolves under H, the central spin becomes correlated with the bath so at later times is no longer pure. The central spin is said to have decohered, and the amount of decoherence is typically quantified by the von Neumann entropy of its reduced density matrix, ...
... As the system evolves under H, the central spin becomes correlated with the bath so at later times is no longer pure. The central spin is said to have decohered, and the amount of decoherence is typically quantified by the von Neumann entropy of its reduced density matrix, ...
Classical Simulation of Quantum Systems
... of many-body systems are now possible for quite large particle numbers N. Nevertheless, classical many-body physics is far from being fully explored. In quantum mechanical problems, computations are much more difficult due to the fact that the dimension of the Hilbert space of a quantum system grows ...
... of many-body systems are now possible for quite large particle numbers N. Nevertheless, classical many-body physics is far from being fully explored. In quantum mechanical problems, computations are much more difficult due to the fact that the dimension of the Hilbert space of a quantum system grows ...
Physics - Poincare
... include the superfluid and the Bose–Einstein condensate found in certain atomic systems at very low temperature, the superconducting phase exhibited by conduction electrons in certain materials, and the ferromagnetic and antiferromagnetic phases of spins on atomic lattices. Condensed matter physics ...
... include the superfluid and the Bose–Einstein condensate found in certain atomic systems at very low temperature, the superconducting phase exhibited by conduction electrons in certain materials, and the ferromagnetic and antiferromagnetic phases of spins on atomic lattices. Condensed matter physics ...
Lecture Notes for Physics 229: Quantum Information and Computation
... up your hard disk). These properties of quantum information are important, but the really deep way in which quantum information diers from classical information emerged from the work of John Bell (1964), who showed that the predictions of quantum mechanics cannot be reproduced by any local hidden v ...
... up your hard disk). These properties of quantum information are important, but the really deep way in which quantum information diers from classical information emerged from the work of John Bell (1964), who showed that the predictions of quantum mechanics cannot be reproduced by any local hidden v ...
the final version of Abstract Book
... All these developments have brought new questions and challenges for the understanding the behavior of various systems and structures, both of natural and of artificial origin. They have also opened a vast arena for better tests of foundations of theories, hypothesis, and models, which are being use ...
... All these developments have brought new questions and challenges for the understanding the behavior of various systems and structures, both of natural and of artificial origin. They have also opened a vast arena for better tests of foundations of theories, hypothesis, and models, which are being use ...