950 - IACR
... and thus the main advantage of QKD. If we use shared key authentication, a key needs to be exchanged beforehand. (And, if we exchange an authentication key in a personal meeting, why not just exchange enough key material for one-time pad encryption – storage is cheap.) Everlasting quantum security. ...
... and thus the main advantage of QKD. If we use shared key authentication, a key needs to be exchanged beforehand. (And, if we exchange an authentication key in a personal meeting, why not just exchange enough key material for one-time pad encryption – storage is cheap.) Everlasting quantum security. ...
Chapter 46
... very short lifetime, the photon’s excess energy is less than the uncertainty in its energy The virtual photon can exist for short time intervals, such that ΔE / 2Δt ...
... very short lifetime, the photon’s excess energy is less than the uncertainty in its energy The virtual photon can exist for short time intervals, such that ΔE / 2Δt ...
Bulk Locality and Quantum Error Correction in AdS/CFT arXiv
... It is not obvious from the definition that the operators (2.2) have the expected commutators in the bulk; this has been checked perturbatively within low point correlation functions in [19], but must eventually break down in states with enough excitations to avoid a contradiction with the argument i ...
... It is not obvious from the definition that the operators (2.2) have the expected commutators in the bulk; this has been checked perturbatively within low point correlation functions in [19], but must eventually break down in states with enough excitations to avoid a contradiction with the argument i ...
Hydrogen atom
... The principal difference between the atom-models proposed by Thomson and Rutherford consist in the circumstance that the forces acting on the electrons in the atom-model of Thomson allow of certain configurations and motion of the electrons for which the system is in a stable equilibrium; such configu ...
... The principal difference between the atom-models proposed by Thomson and Rutherford consist in the circumstance that the forces acting on the electrons in the atom-model of Thomson allow of certain configurations and motion of the electrons for which the system is in a stable equilibrium; such configu ...
UNCERTAINTY PRINCIPLE AND QUANTUM FISHER INFORMATION
... the commutators i[A, ρ], i[B, ρ] in the tangent space to the state ρ, provided the state space is equipped with a suitable monotone metric (see Theorem 6.1). At this point it is natural to ask whether such an inequality holds for other quantum Fisher informations in the Wigner-Yanase-Dyson class (li ...
... the commutators i[A, ρ], i[B, ρ] in the tangent space to the state ρ, provided the state space is equipped with a suitable monotone metric (see Theorem 6.1). At this point it is natural to ask whether such an inequality holds for other quantum Fisher informations in the Wigner-Yanase-Dyson class (li ...
Coherent control of macroscopic quantum states in a single
... system in the sense that: (1) although there are a large number of electrons in the metal `box' electrode, under superconductivity they all form Cooper pairs and condense into a single macroscopic ground state, |ni, separated by a superconductivity gap ¢ from the excited states with quasiparticles. ...
... system in the sense that: (1) although there are a large number of electrons in the metal `box' electrode, under superconductivity they all form Cooper pairs and condense into a single macroscopic ground state, |ni, separated by a superconductivity gap ¢ from the excited states with quasiparticles. ...
Magnetic-Field Manipulation of Chemical Bonding in Artificial
... Our approach is twofold. As a first step, we utilize a self-consistent-field theory which can go beyond the MO approximation, namely the spin-andspace unrestricted Hartree–Fock (sS-UHF), which was introduced by us [10, 11] for the description of the many-body problem of both single [10, 11] and mole ...
... Our approach is twofold. As a first step, we utilize a self-consistent-field theory which can go beyond the MO approximation, namely the spin-andspace unrestricted Hartree–Fock (sS-UHF), which was introduced by us [10, 11] for the description of the many-body problem of both single [10, 11] and mole ...
A Diffusion Model for the Schrodinger Equation*l
... Another set of statistical properties that must be stipulated is that the random variable (u")" is completely uncorrelated with any other random variable (ut) 1, if either V=/=1-! or i=/=k. Similarly, (Jr).= ('r)v- (r)1 is entirely uncorrelated with (Jr)" if v=l= f.!. Brownian motion is actually a s ...
... Another set of statistical properties that must be stipulated is that the random variable (u")" is completely uncorrelated with any other random variable (ut) 1, if either V=/=1-! or i=/=k. Similarly, (Jr).= ('r)v- (r)1 is entirely uncorrelated with (Jr)" if v=l= f.!. Brownian motion is actually a s ...
Ex. = 1s 1 , 0 to (1-1)
... In the address analogy, this would be the street on which the electron would probably be found. In the first state there is one city. In this first city there would be one street. In the second state there are two cities. The first city with its one street and a second city with its 3 streets for a ...
... In the address analogy, this would be the street on which the electron would probably be found. In the first state there is one city. In this first city there would be one street. In the second state there are two cities. The first city with its one street and a second city with its 3 streets for a ...
document
... Pick one of the 2, say lower, and let it pervade the cosmos as a sea of virtual fluctuations. We can’t see this uniform presense just as we can’t see EM vacuum fluctuations Hypothesize that this pervasive background of lower exerts a “drag” force on anything it interacts with, giving mass to the W ...
... Pick one of the 2, say lower, and let it pervade the cosmos as a sea of virtual fluctuations. We can’t see this uniform presense just as we can’t see EM vacuum fluctuations Hypothesize that this pervasive background of lower exerts a “drag” force on anything it interacts with, giving mass to the W ...
Numerical solution of the Dirac equation by a mapped Fourier grid
... One of the main features of the Fourier method is that the entire calculation can be performed in position space while using an analytic expression for the derivative terms. This is to be contrasted with finite-difference methods or other derivative approximation schemes. Given that the potential is ...
... One of the main features of the Fourier method is that the entire calculation can be performed in position space while using an analytic expression for the derivative terms. This is to be contrasted with finite-difference methods or other derivative approximation schemes. Given that the potential is ...
Extremal properties of the variance and the quantum Fisher
... We will also discuss that numerical calculations suggest that the left-hand side and the right-hand side of Eq. (6) are very close to each other, even when A has nonzero diagonal elements or the density matrix has a rank larger than 2. Concerning the quantum Fisher information, we can also prove the ...
... We will also discuss that numerical calculations suggest that the left-hand side and the right-hand side of Eq. (6) are very close to each other, even when A has nonzero diagonal elements or the density matrix has a rank larger than 2. Concerning the quantum Fisher information, we can also prove the ...
QUANTUM MONTE CARLO SIMULATION OF TUNNELLING DEVICES USING WAVEPACKETS AND BOHM TRAJECTORIES
... intermediate between the microscopic objects (like atoms) and the macroscopic ones. These are the so-called mesoscopic devices whose characteristic dimensions are of several nanometers. The electronic transport in these mesoscopic devices can only be understood by assuming additional quantum 'skills ...
... intermediate between the microscopic objects (like atoms) and the macroscopic ones. These are the so-called mesoscopic devices whose characteristic dimensions are of several nanometers. The electronic transport in these mesoscopic devices can only be understood by assuming additional quantum 'skills ...
IS THERE A UNIQUE PHYSICAL ENTROPY? MICRO VERSUS
... Consider one particle a that follows trajectory 1 and another particle b of the same kind that follows trajectory 2. Now imagine the case in which particle a followed trajectory 2 and particle b followed trajectory 1. This exchange would not make any difference for the physical situation. As before, ...
... Consider one particle a that follows trajectory 1 and another particle b of the same kind that follows trajectory 2. Now imagine the case in which particle a followed trajectory 2 and particle b followed trajectory 1. This exchange would not make any difference for the physical situation. As before, ...
92, 054101 (2004)
... The classical kicked rotor is a textbook paradigm for dynamical chaos [1]. The quantum kicked rotor has played an equally important role for the study of quantum chaos, for which a wide range of effects have been predicted [2] and observed in experiments [3]. In recent years, the realization of Bose ...
... The classical kicked rotor is a textbook paradigm for dynamical chaos [1]. The quantum kicked rotor has played an equally important role for the study of quantum chaos, for which a wide range of effects have been predicted [2] and observed in experiments [3]. In recent years, the realization of Bose ...
A short introduction to unitary 2-designs
... for all possible pt , where the integral is taken with respect to the normalized spherical measure. Note that by definition, a t-design is also a (t − 1)-design, since all monomials can have degree at most t (as long as all degrees are identical). Spherical designs exist for all t and d [1]. Let us ...
... for all possible pt , where the integral is taken with respect to the normalized spherical measure. Note that by definition, a t-design is also a (t − 1)-design, since all monomials can have degree at most t (as long as all degrees are identical). Spherical designs exist for all t and d [1]. Let us ...
Self-assembled quantum dots
... corresponds to the compressive strain. Additionally the division by the unstrained length allows to introduce a unified strain measure of objects of different lengths. For example, one meter long steel wire stretched by 1 centimeter is under the same (1%) strain, as one kilometer long wire stretched ...
... corresponds to the compressive strain. Additionally the division by the unstrained length allows to introduce a unified strain measure of objects of different lengths. For example, one meter long steel wire stretched by 1 centimeter is under the same (1%) strain, as one kilometer long wire stretched ...