Macroscopic quantum Schro¨dinger and Einstein–Podolsky–Rosen
... In his famous 1935 essay, Schrödinger [1] discussed how ‘ridiculous’ it would be to set up a case where a cat would be described by a superposition of dead and alive states. The underlying assumption in Schrödinger’s remark is what we might call ‘macroscopic realism’. This premise states that, eve ...
... In his famous 1935 essay, Schrödinger [1] discussed how ‘ridiculous’ it would be to set up a case where a cat would be described by a superposition of dead and alive states. The underlying assumption in Schrödinger’s remark is what we might call ‘macroscopic realism’. This premise states that, eve ...
Slide 1
... measurement allows to extract information of a quantum system in the limit of vanishingly small disturbance to its state. In strong measurement, while measuring an observable, the pointer indicates the eigenvalues of the given observable. In weak measurement the pointer may indicate a value beyo ...
... measurement allows to extract information of a quantum system in the limit of vanishingly small disturbance to its state. In strong measurement, while measuring an observable, the pointer indicates the eigenvalues of the given observable. In weak measurement the pointer may indicate a value beyo ...
PPT - Fernando Brandao
... We say X1, …, Xn on a graph G form a Markov Network if Xi is indendent of all other X’s conditioned on its neighbors ...
... We say X1, …, Xn on a graph G form a Markov Network if Xi is indendent of all other X’s conditioned on its neighbors ...
Experimental demonstration of quantum correlations over more than
... us mention two of the fundamental issues. First there is the local-hidden-variable program. It seems clear that if there are no hidden variables after 10 m, there are also none after 10 km. Since our experiments improve the physical distance at the cost of higher losses, less efficient and more nois ...
... us mention two of the fundamental issues. First there is the local-hidden-variable program. It seems clear that if there are no hidden variables after 10 m, there are also none after 10 km. Since our experiments improve the physical distance at the cost of higher losses, less efficient and more nois ...
The measure of existence of a quantum world and the Sleeping
... the same memories as an observer in a MWI-Universe in a world with corresponding results. In the MWI, the squared absolute value of the amplitude of a world is called its ‘measure of existence’. The ‘behaviour principle’ teaches us that one should care about one’s descendants according to the measur ...
... the same memories as an observer in a MWI-Universe in a world with corresponding results. In the MWI, the squared absolute value of the amplitude of a world is called its ‘measure of existence’. The ‘behaviour principle’ teaches us that one should care about one’s descendants according to the measur ...
Wigner functions - Statistical Physics and Theory of Chaos
... the momentum variable. Although straightforward, the momentum distribution is difficult to visualize if one only has 共x兲. It would be desirable to have a function that displays the probability distribution simultaneously in the x and p variables. The Wigner function, introduced by Wigner in 1932,1 ...
... the momentum variable. Although straightforward, the momentum distribution is difficult to visualize if one only has 共x兲. It would be desirable to have a function that displays the probability distribution simultaneously in the x and p variables. The Wigner function, introduced by Wigner in 1932,1 ...
progress in quantum foundations - Department of Computer Science
... Our scientific theories aim to accurately describe every phenomenon that can possibly occur in the world we live in. However, one can hope that a theory will not only explain all observable occurrences and predict new results, but will also convey an understanding of the inner workings of nature; an ...
... Our scientific theories aim to accurately describe every phenomenon that can possibly occur in the world we live in. However, one can hope that a theory will not only explain all observable occurrences and predict new results, but will also convey an understanding of the inner workings of nature; an ...
What is a quantum simulator?
... An exciting possibility is that the first simulation devices capable of answering some of these questions may be quantum, not classical, with this distinction to be clarified below. The types of quantum hardware proposed to perform such simulations are as hugely varying as the problems they aim to s ...
... An exciting possibility is that the first simulation devices capable of answering some of these questions may be quantum, not classical, with this distinction to be clarified below. The types of quantum hardware proposed to perform such simulations are as hugely varying as the problems they aim to s ...
Halperin Presentation - National Academy of Sciences
... Recent observations of the little Higgs in superfluid 3He-B have prompted, by analogy, predictionof a new Higgs particle at 325 GeV. ...
... Recent observations of the little Higgs in superfluid 3He-B have prompted, by analogy, predictionof a new Higgs particle at 325 GeV. ...
1 THE TECHNIQUE OF SIGNIFICABLES A proposed complete
... sorts of considerations we have just been through that α and β can only be observationally distinguished from one another if there is at least one physically possible initial condition of G+R on which G ends up located in some particular macroscopic region Rα if S is initially in condition α and on ...
... sorts of considerations we have just been through that α and β can only be observationally distinguished from one another if there is at least one physically possible initial condition of G+R on which G ends up located in some particular macroscopic region Rα if S is initially in condition α and on ...
Parallel Universes Is there a copy of you Not just a staple
... life of this person has been identical to yours in every respect. But perhaps he or she now decides to put down this article without finishing it, while you read on. The idea of such an alter ego seems strange and implausible, but it looks as if we will just have to live with it, because it is suppo ...
... life of this person has been identical to yours in every respect. But perhaps he or she now decides to put down this article without finishing it, while you read on. The idea of such an alter ego seems strange and implausible, but it looks as if we will just have to live with it, because it is suppo ...
March 2002 Vol - Basarab Nicolescu
... the classical realism; these end to be paradoxes when the language appropriate to the quantum mechanics is used. Even if they are instructive when one wants to show the incompatibility between the classical and quantum realism, these paradoxes become useless in the context of the quantum ideas. The ...
... the classical realism; these end to be paradoxes when the language appropriate to the quantum mechanics is used. Even if they are instructive when one wants to show the incompatibility between the classical and quantum realism, these paradoxes become useless in the context of the quantum ideas. The ...
Solving the Schrödinger Equation of Atoms and Molecules without
... almost symmetric. Therefore, Eq. (5) is more easily handled than Eq. (4) as a diagonalization equation. We note that we may multiply AT , instead of BT , from the left of Eq. (4) and use the resultant equation for calculating C and E, which is useful for the relativistic case since it corresponds to ...
... almost symmetric. Therefore, Eq. (5) is more easily handled than Eq. (4) as a diagonalization equation. We note that we may multiply AT , instead of BT , from the left of Eq. (4) and use the resultant equation for calculating C and E, which is useful for the relativistic case since it corresponds to ...
PDF
... the standard axiomatic presentation of quantum mechanics, due to von Neumann [28], at a more abstract level, of compact closed categories with biproducts. We show how the essential structures found in key quantum information protocols such as teleportation [5], logic-gate teleportation [12], and ent ...
... the standard axiomatic presentation of quantum mechanics, due to von Neumann [28], at a more abstract level, of compact closed categories with biproducts. We show how the essential structures found in key quantum information protocols such as teleportation [5], logic-gate teleportation [12], and ent ...
Fidelity as a figure of merit in quantum error correction
... recovery operations, is identical to the initial state. Therefore, this figure of merit (FOM) is a measure of “likeness”, and it has the characteristic property that identical states have unit fidelity, while orthogonal states have zero fidelity. We have also presented a code with fidelity as its FO ...
... recovery operations, is identical to the initial state. Therefore, this figure of merit (FOM) is a measure of “likeness”, and it has the characteristic property that identical states have unit fidelity, while orthogonal states have zero fidelity. We have also presented a code with fidelity as its FO ...
A simple experiment for discussion of quantum interference and
... process is clearly inapplicable.6 Dürr, Nonn, and Rempe1 refuted that argument in the case of their atom interference experiment by a detailed calculation of the recoil momentum associated with microwave photon absorption. One need not go through such a calculation here because the eraser restores ...
... process is clearly inapplicable.6 Dürr, Nonn, and Rempe1 refuted that argument in the case of their atom interference experiment by a detailed calculation of the recoil momentum associated with microwave photon absorption. One need not go through such a calculation here because the eraser restores ...
Light and the Resolution of the Heisenberg Uncertainty Principle
... The phenomenon also explains several mysteries regarding what is called “quantum tunneling,” that is, the tendency of particles to disappear and reappear. This has been explained by the invocation of myriad extra dimensions. However, the existence of an excessively complex set of extra dimensions is ...
... The phenomenon also explains several mysteries regarding what is called “quantum tunneling,” that is, the tendency of particles to disappear and reappear. This has been explained by the invocation of myriad extra dimensions. However, the existence of an excessively complex set of extra dimensions is ...
Unitary time evolution
... For one, the state |ψi of a system is not an observable. Given a quantum system, there is no way to tell in what state |ψi it was prepared. If the state |ψi is known, the state can be “copied” by preparing another system. But it is impossible to copy an unknown quantum state. This means that many te ...
... For one, the state |ψi of a system is not an observable. Given a quantum system, there is no way to tell in what state |ψi it was prepared. If the state |ψi is known, the state can be “copied” by preparing another system. But it is impossible to copy an unknown quantum state. This means that many te ...
