Enhanced and Reduced Atom Number
... longer times. This agrees with the expectation that an optimum should exist between very short r creating excitations in the BEC and/or not leaving sufficient time for tunneling, and very long r where heating and atom loss become important. For a quantitative analysis, we start by noting that low- ...
... longer times. This agrees with the expectation that an optimum should exist between very short r creating excitations in the BEC and/or not leaving sufficient time for tunneling, and very long r where heating and atom loss become important. For a quantitative analysis, we start by noting that low- ...
The Everett`s Axiom of Parallelism
... the section of alterverse represented by the segment (2-4). The points k1,…, k7 can potentially contain "event of flash". For clarity, it is assumed that this happened at point k3, which in this case is the active branching point. This is reflected by the construction of the light cone of the event ...
... the section of alterverse represented by the segment (2-4). The points k1,…, k7 can potentially contain "event of flash". For clarity, it is assumed that this happened at point k3, which in this case is the active branching point. This is reflected by the construction of the light cone of the event ...
single photon
... The fastest detectors have a time resolution of 70 ns2, i.e. they are a factor of 50 000 000 slower than two photons in a wave - train can follow each other (1.5 fs). Thus, when a detector is claimed to be a ”single photon” detector, this means that it can register light down to one hv quantum. quan ...
... The fastest detectors have a time resolution of 70 ns2, i.e. they are a factor of 50 000 000 slower than two photons in a wave - train can follow each other (1.5 fs). Thus, when a detector is claimed to be a ”single photon” detector, this means that it can register light down to one hv quantum. quan ...
Quantum nature of laser light
... with (1), or being identically zero in each term if we take the matrix elements of (2). Just as (1) is what we would write if we knew the laser field was prepared in a coherent state, but have no information about its phase, expression (2) is what would write if we knew that the field was prepared i ...
... with (1), or being identically zero in each term if we take the matrix elements of (2). Just as (1) is what we would write if we knew the laser field was prepared in a coherent state, but have no information about its phase, expression (2) is what would write if we knew that the field was prepared i ...
Quantum Information Processing - LANL Research Library
... systems defined by two energy levels of atoms or ions. From the beginning, the twostate system played a central role in studies of quantum mechanics. It is the simplest quantum system, and in principle, all other quantum systems can be modeled in the state space of collections of qubits. From the in ...
... systems defined by two energy levels of atoms or ions. From the beginning, the twostate system played a central role in studies of quantum mechanics. It is the simplest quantum system, and in principle, all other quantum systems can be modeled in the state space of collections of qubits. From the in ...
The Hierarchy Problem and New Dimensions at a Millimeter
... R4 ×Mn for n ≥ 2, where Mn is an n dimensional compact manifold of volume Rn , with R given by eq. (4). The (4+n) dimensional Planck mass is ∼ mEW , the only short-distance scale in the theory. Therefore the gravitational force becomes comparable to the gauge forces at the weak scale. The usual 4 di ...
... R4 ×Mn for n ≥ 2, where Mn is an n dimensional compact manifold of volume Rn , with R given by eq. (4). The (4+n) dimensional Planck mass is ∼ mEW , the only short-distance scale in the theory. Therefore the gravitational force becomes comparable to the gauge forces at the weak scale. The usual 4 di ...
Julian Schwinger (1918-1994)
... representation to describe the scattering of spin-1/2 Dirac particles, electronelectron scattering or Møller scattering. This paper he wrote entirely on his own, but showed it to no one, nor did he submit it to a journal. It was ‘a little practice in writing,’ but it was a sign of great things to c ...
... representation to describe the scattering of spin-1/2 Dirac particles, electronelectron scattering or Møller scattering. This paper he wrote entirely on his own, but showed it to no one, nor did he submit it to a journal. It was ‘a little practice in writing,’ but it was a sign of great things to c ...
In Search of the God Particle
... out there in our stadium stands can feel the electrical force exerted by the atom’s nucleus. It’s as though the spectator can make out the tiny bean in the center of the playing field. Does the electron use some kind of binoculars? Actually, it doesn’t “see” the bean. A better analogy is that it is ...
... out there in our stadium stands can feel the electrical force exerted by the atom’s nucleus. It’s as though the spectator can make out the tiny bean in the center of the playing field. Does the electron use some kind of binoculars? Actually, it doesn’t “see” the bean. A better analogy is that it is ...
Magnetic impurity formation in quantum point contacts Tomazˇ Rejec & Yigal Meir
... two wider electron reservoirs, and is the standard building block of sub-micrometre devices such as quantum dots and qubits (the proposed basic elements of quantum computers). The conductance through a QPC changes as a function of its width in integer steps of G 0 5 2e 2/h (where e is the charge on ...
... two wider electron reservoirs, and is the standard building block of sub-micrometre devices such as quantum dots and qubits (the proposed basic elements of quantum computers). The conductance through a QPC changes as a function of its width in integer steps of G 0 5 2e 2/h (where e is the charge on ...
The Family Problem: Extension of Standard Model with a
... Dirac tried to describe the electron by proposing Dirac equation. Then the quarks and leptons are written in terms of Dirac equations on certain forms. And all the interactions are in the gauge fields. In reality, nothing more. ...
... Dirac tried to describe the electron by proposing Dirac equation. Then the quarks and leptons are written in terms of Dirac equations on certain forms. And all the interactions are in the gauge fields. In reality, nothing more. ...
Morse Theory is a part pf differential geometry, concerned with
... forms. We will also define the Hodge operator, which will be used in the proof of the Morse Inequalities. If we choose a Riemannian metric on the manifold M, denoted gm , this implies that for all m M , we have an inner product gm (, ) on the tangent space T ( M ). For smooth vector fields on ...
... forms. We will also define the Hodge operator, which will be used in the proof of the Morse Inequalities. If we choose a Riemannian metric on the manifold M, denoted gm , this implies that for all m M , we have an inner product gm (, ) on the tangent space T ( M ). For smooth vector fields on ...
Linear Zeeman effect for collective modes in He3-A
... The A-phase is probably one of the most interesting objects in superfluid He3. It provides us with an example of an anisotropic quantum superfluid. The main properties of He3-A are connected with the existence, on the Fermi surface, of two poles at which the gap in the single-particle spectrum vanis ...
... The A-phase is probably one of the most interesting objects in superfluid He3. It provides us with an example of an anisotropic quantum superfluid. The main properties of He3-A are connected with the existence, on the Fermi surface, of two poles at which the gap in the single-particle spectrum vanis ...
Complexity Limitations on Quantum Computation 1 Introduction
... For the rest of the paper, we will assume that the pairing function is implicitly used whenever we have a function of two or more arguments. We can also define many interesting counting classes using GapP functions. For this paper we consider the following classes. Definition 2.3 The class PP consis ...
... For the rest of the paper, we will assume that the pairing function is implicitly used whenever we have a function of two or more arguments. We can also define many interesting counting classes using GapP functions. For this paper we consider the following classes. Definition 2.3 The class PP consis ...
Disorder-induced order with ultra-cold atoms
... system with a continuous symmetry such as the classical isotropic ferromagnetic XY model. In this model, neighboring spins tend to align, at zero temperature, between themselves within a preferential plane, the XY plane spanned by the x and y axis. For this kind of system yielding a continuous symet ...
... system with a continuous symmetry such as the classical isotropic ferromagnetic XY model. In this model, neighboring spins tend to align, at zero temperature, between themselves within a preferential plane, the XY plane spanned by the x and y axis. For this kind of system yielding a continuous symet ...
8 He - CEA-Irfu
... The GSM description is appropriate for modelling weakly bound nuclei with large radial extension. For 6He we observed an overall weak sensitivity for both correlation angle and charge radius. However, when adding 2 more neutrons in the system he details of each interaction are revealed. The next ...
... The GSM description is appropriate for modelling weakly bound nuclei with large radial extension. For 6He we observed an overall weak sensitivity for both correlation angle and charge radius. However, when adding 2 more neutrons in the system he details of each interaction are revealed. The next ...