Three Myths about Time Reversal in Quantum Theory
... that I think is not very well known. To begin, consider two rays that are orthogonal, hW, F i 5 0. In physical terms, this means that the two corresponding states are mutually exclusive: if one of them is prepared, then the probability of measuring the other is zero, in every experiment. To have a s ...
... that I think is not very well known. To begin, consider two rays that are orthogonal, hW, F i 5 0. In physical terms, this means that the two corresponding states are mutually exclusive: if one of them is prepared, then the probability of measuring the other is zero, in every experiment. To have a s ...
Decoherence in Solid State Qubits
... devices in order to ensure long coherence times. Therefore, it is important to understand theoretically how decoherence happens in the systems under study (here, solid state systems) in order to make progress toward this ambitious goal (i.e. implementing quantum information). ...
... devices in order to ensure long coherence times. Therefore, it is important to understand theoretically how decoherence happens in the systems under study (here, solid state systems) in order to make progress toward this ambitious goal (i.e. implementing quantum information). ...
The Physical World as a Virtual Reality
... accurate, and predictive scientific theory ever developed. But … the very suggestion that it may be literally true as a description of nature is still greeted with cynicism, incomprehension, and even anger.” (Vacca, 2005) p116 There are equations, proofs and applications, but the models that work ma ...
... accurate, and predictive scientific theory ever developed. But … the very suggestion that it may be literally true as a description of nature is still greeted with cynicism, incomprehension, and even anger.” (Vacca, 2005) p116 There are equations, proofs and applications, but the models that work ma ...
New Class of Quantum Error-Correcting Codes for a Bosonic Mode
... with equidistant level spacing, the only quantum states that can be accessed via classical linear drives are simple coherent states. To create more useful quantum superpositions of photon Fock states which can store quantum information, it is necessary to couple the bosonic mode to a nonlinear eleme ...
... with equidistant level spacing, the only quantum states that can be accessed via classical linear drives are simple coherent states. To create more useful quantum superpositions of photon Fock states which can store quantum information, it is necessary to couple the bosonic mode to a nonlinear eleme ...
Quantum Gravity : Has Spacetime Quantum - Philsci
... incompatibility of General Relativity and Quantum Mechanics by simply applying the usual quantization procedures to the gravitational field. – Possibly fluctuations of the causal structure of spacetime exist. Possibly there does not even exist any basic causal structure in nature. Possibly causal st ...
... incompatibility of General Relativity and Quantum Mechanics by simply applying the usual quantization procedures to the gravitational field. – Possibly fluctuations of the causal structure of spacetime exist. Possibly there does not even exist any basic causal structure in nature. Possibly causal st ...
A Quantum-Mechanical Argument for Mind
... Consider how Wigner’s collapse theory solves the quantum measurement problem. If Einstein’s brain and his bed end up in an entangled superposition, the conscious apprehension of Einstein’s brain record of the bed’s position by Einstein’s nonphysical mind will cause the composite physical system to c ...
... Consider how Wigner’s collapse theory solves the quantum measurement problem. If Einstein’s brain and his bed end up in an entangled superposition, the conscious apprehension of Einstein’s brain record of the bed’s position by Einstein’s nonphysical mind will cause the composite physical system to c ...
Quantum Circuits Engineering: Efficient Simulation and
... quantum states in a structural manner, employing only polynomial resources for simulation. By contrast, when entanglement is detected in the processed state, the circuit has to be described with a behavioral architecture, and exponential resources must be used in this case. That happens because, whe ...
... quantum states in a structural manner, employing only polynomial resources for simulation. By contrast, when entanglement is detected in the processed state, the circuit has to be described with a behavioral architecture, and exponential resources must be used in this case. That happens because, whe ...
pdf - VUB
... e ect. They suggested the e ect could be due to the existence of contrast categories, the idea being that a concept such as fruit contains not only information about fruit, but information about categories that are related to, yet di erent from, fruit. Thus, a particular item might be a better ex ...
... e ect. They suggested the e ect could be due to the existence of contrast categories, the idea being that a concept such as fruit contains not only information about fruit, but information about categories that are related to, yet di erent from, fruit. Thus, a particular item might be a better ex ...
Fabrication and characterization of single luminescing quantum dots
... been of great help in the project, but also a fun partner to discuss arts and give "different" presentations with. May you continue our project with great success and harvest many results! At the workplace, the lab environment is one thing, but then there is the office, and lucky are those who enjoy ...
... been of great help in the project, but also a fun partner to discuss arts and give "different" presentations with. May you continue our project with great success and harvest many results! At the workplace, the lab environment is one thing, but then there is the office, and lucky are those who enjoy ...
Quantum computation and quantum information (PDF
... 2. Fundamentals of quantum information and quantum computation The field of quantum information and quantum computation is based on the postulates governing quantum mechanics. The aim of this section is to provide a description of these postulates and mathematical formalisms required to work with th ...
... 2. Fundamentals of quantum information and quantum computation The field of quantum information and quantum computation is based on the postulates governing quantum mechanics. The aim of this section is to provide a description of these postulates and mathematical formalisms required to work with th ...
Quantum heating of a parametrically modulated oscillator: Spectral signatures M. Marthaler,
... This effect, quantum activation [10,11], has been now seen in the experiment [2]. Quantum heating also affects the dynamics of a resonantly driven oscillator coupled to a two-level system [12], and interesting spectral manifestations of the heating in such coupled system have been recently seen [13] ...
... This effect, quantum activation [10,11], has been now seen in the experiment [2]. Quantum heating also affects the dynamics of a resonantly driven oscillator coupled to a two-level system [12], and interesting spectral manifestations of the heating in such coupled system have been recently seen [13] ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.