Unitary time evolution
... This simple result has many profound consequences. 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 co ...
... This simple result has many profound consequences. 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 co ...
Proposal for a topological plasmon spin rectifier
... crossing a bulk electronic gap.1 In these surface states, spin and momentum are perfectly related, so that the momentum asymmetry caused by an induced charge current necessarily spin polarizes the system. Recently, Raghu et al.2 have theoretically investigated the properties of resonant electromagne ...
... crossing a bulk electronic gap.1 In these surface states, spin and momentum are perfectly related, so that the momentum asymmetry caused by an induced charge current necessarily spin polarizes the system. Recently, Raghu et al.2 have theoretically investigated the properties of resonant electromagne ...
Attractive photons in a quantum nonlinear medium
... bound states of a few quanta4,5,7,24, a feature generic to strongly interacting quantum field theories. The main result reported here is the experimental realization of a photonic system with strong attractive interactions, including evidence for a predicted two-photon bound state. Our experiment (o ...
... bound states of a few quanta4,5,7,24, a feature generic to strongly interacting quantum field theories. The main result reported here is the experimental realization of a photonic system with strong attractive interactions, including evidence for a predicted two-photon bound state. Our experiment (o ...
Quantum Darwinism as a Darwinian process - Non
... process responsible for the emergence of classical reality from its quantum substrate. This theory explains information transfer between the quantum and classical realm during the process of decoherence as involving a ‘copy with selective retention’ mechanism characteristic of Darwinian processes. Q ...
... process responsible for the emergence of classical reality from its quantum substrate. This theory explains information transfer between the quantum and classical realm during the process of decoherence as involving a ‘copy with selective retention’ mechanism characteristic of Darwinian processes. Q ...
Ruelle.pdf
... is simple dynamics inadequate for nonequilibrium? Using the formalism of Gaussian thermostats where entropy production is the rate of volume contraction, or equivalently minus the sum of all Lyapunov exponents, one sees that nontrivial entropy production entails some non zero Lyapunov exponents, whi ...
... is simple dynamics inadequate for nonequilibrium? Using the formalism of Gaussian thermostats where entropy production is the rate of volume contraction, or equivalently minus the sum of all Lyapunov exponents, one sees that nontrivial entropy production entails some non zero Lyapunov exponents, whi ...
Quantum Relaxation after a Quench in Systems with Boundaries Ferenc Iglo´i *
... states was conjectured [13], however, the numerical results on specific systems are controversial [13–15]. On the other hand, integrable systems are sensitive to the initial states and their stationary states are thermal-like, being in a form of a generalized Gibbs ensemble [8]. Thermalization inclu ...
... states was conjectured [13], however, the numerical results on specific systems are controversial [13–15]. On the other hand, integrable systems are sensitive to the initial states and their stationary states are thermal-like, being in a form of a generalized Gibbs ensemble [8]. Thermalization inclu ...
Factoring 51 and 85 with 8 qubits
... presented here should be considered as such. In our opinion a genuine implementation should use no knowledge of the value of the order r—including whether or not it is a power of two—because the objective of the quantum stage of the algorithm is to calculate r. Therefore we do not regard the factori ...
... presented here should be considered as such. In our opinion a genuine implementation should use no knowledge of the value of the order r—including whether or not it is a power of two—because the objective of the quantum stage of the algorithm is to calculate r. Therefore we do not regard the factori ...
![arXiv:0803.3834v2 [quant-ph] 26 May 2009](http://s1.studyres.com/store/data/015940141_1-1e8e53e4d619ce68a74ed7b6b3742d1d-300x300.png)
arXiv:0803.3834v2 [quant-ph] 26 May 2009
... for new students. The quantum description of angular momentum involves differential operators or new algebra rules that seem to be disconnected from the classical intuition. For small values of angular momentum one needs a quantum description because the quantum fluctuations are as big as the angula ...
... for new students. The quantum description of angular momentum involves differential operators or new algebra rules that seem to be disconnected from the classical intuition. For small values of angular momentum one needs a quantum description because the quantum fluctuations are as big as the angula ...
a simple explanation of search technique in quantum framework
... This parallelism provides the distinction between classical and quantum algorithmic strategies. For an example the objective of a classical algorithm is to reduce the amplitude of non target states, where as a quantum search algorithm tries to amplify the amplitude of the target states. Here the ter ...
... This parallelism provides the distinction between classical and quantum algorithmic strategies. For an example the objective of a classical algorithm is to reduce the amplitude of non target states, where as a quantum search algorithm tries to amplify the amplitude of the target states. Here the ter ...
Effect of quantum fluctuations on structural phase transitions in
... Quantum fluctuations typically have a very important effect on the structural and thermodynamic properties of materials consisting of light atoms like hydrogen and helium. For example, quantum effects introduce large corrections to the calculated hydrogen density distribution in the Nb:H system.1 Fo ...
... Quantum fluctuations typically have a very important effect on the structural and thermodynamic properties of materials consisting of light atoms like hydrogen and helium. For example, quantum effects introduce large corrections to the calculated hydrogen density distribution in the Nb:H system.1 Fo ...
PPT - Fernando Brandao
... managed to overcome the previous difficulty by using a quantum trick: • Suppose there are only two witnesses { 1 , 2 } acceptance probability bigger than 2/3 (all other having acceptance prob. < 1/3) ...
... managed to overcome the previous difficulty by using a quantum trick: • Suppose there are only two witnesses { 1 , 2 } acceptance probability bigger than 2/3 (all other having acceptance prob. < 1/3) ...
Document
... • Since the Hilbert space of the photonic degree of freedom is large, we can expect to transmit more than one bit per photon • For actual PDC sources, the mutual information per photon pair is determined by the length of the crystal Lz and the spot size of the pump w0 ...
... • Since the Hilbert space of the photonic degree of freedom is large, we can expect to transmit more than one bit per photon • For actual PDC sources, the mutual information per photon pair is determined by the length of the crystal Lz and the spot size of the pump w0 ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: