How Many Lives has Schrödinger`s Cat?
... macroscopic superpositions: superpositions involving enough particles in entangled states to constitute some macroscopic object. We can observe the interference phenomena arising from microscopic superpositions. We cannot observe interference phenomena arising from macroscopic superpositions. The re ...
... macroscopic superpositions: superpositions involving enough particles in entangled states to constitute some macroscopic object. We can observe the interference phenomena arising from microscopic superpositions. We cannot observe interference phenomena arising from macroscopic superpositions. The re ...
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... Quantum systems are defined by attributes, such as position, momentum, angular momentum, and energy or Hamiltonian. These attributes—and thus the numerical particulars of their eigenvalues and eigenfunctions—are objective properties of the system. The value assumed by an attribute is not an objectiv ...
... Quantum systems are defined by attributes, such as position, momentum, angular momentum, and energy or Hamiltonian. These attributes—and thus the numerical particulars of their eigenvalues and eigenfunctions—are objective properties of the system. The value assumed by an attribute is not an objectiv ...
Introduction to quantum Fisher information
... gives a lower bound for the variance of an unbiased estimator. (For more parameters we have an inequality between positive matrices.) In the quantum formalism a probability measure is replaced by a positive matrix of trace 1. (Its eigenvalues form a probability measure, but to determine the so-calle ...
... gives a lower bound for the variance of an unbiased estimator. (For more parameters we have an inequality between positive matrices.) In the quantum formalism a probability measure is replaced by a positive matrix of trace 1. (Its eigenvalues form a probability measure, but to determine the so-calle ...
Phys. Rev. Lett. 108, 100501 - APS Link Manager
... many-body state has an energy which depends on the boundary conditions set by the state of the qubits. Intuitively, this dependence results from a compression of the crystal, and hence, a decrease in the distance between two Rydberg excitations aR when the boundary qubits are not excited. Under free ...
... many-body state has an energy which depends on the boundary conditions set by the state of the qubits. Intuitively, this dependence results from a compression of the crystal, and hence, a decrease in the distance between two Rydberg excitations aR when the boundary qubits are not excited. Under free ...
Four-photon orbital angular momentum entanglement
... in several degrees of freedom and exhibit quantum entanglement. Apart from the well-known polarization degrees, the photons can also be correlated in their spatial degrees; this manifests itself in continuous wavevector or (the Fourier-related) position entanglement.19 We can also explore the spatia ...
... in several degrees of freedom and exhibit quantum entanglement. Apart from the well-known polarization degrees, the photons can also be correlated in their spatial degrees; this manifests itself in continuous wavevector or (the Fourier-related) position entanglement.19 We can also explore the spatia ...