The additivity problem in quantum information theory
... The problems of data transmission and storage by quantum information carriers received increasing attention during past decade, owing to the burst of activity in the field of quantum information and computation [42], [22]. At present we are witnessing emergence of theoretical and experimental founda ...
... The problems of data transmission and storage by quantum information carriers received increasing attention during past decade, owing to the burst of activity in the field of quantum information and computation [42], [22]. At present we are witnessing emergence of theoretical and experimental founda ...
Quantum critical temperature of a modulated oscillator Lingzhen Guo, Vittorio Peano, M. Marthaler,
... systems is the crossover from quantum tunneling to overbarrier transitions, which occurs for kB T = h̄ωch , where ωch is a characteristic system frequency [13,14]. In contrast, and surprisingly, the switching rates of a modulated oscillator Wsw calculated in the WKB-type approximation for T = 0 [15] ...
... systems is the crossover from quantum tunneling to overbarrier transitions, which occurs for kB T = h̄ωch , where ωch is a characteristic system frequency [13,14]. In contrast, and surprisingly, the switching rates of a modulated oscillator Wsw calculated in the WKB-type approximation for T = 0 [15] ...
Maximally entangling tripartite protocols for Josephson phase qubits *
... realized that due to their intrinsic anharmonicity, the ease of manipulation, and relatively long coherence times $6%, the metastable macroscopic quantum states of the junctions could be used as the states of the qubits. That idea had recently been supported by successful experimental demonstrations ...
... realized that due to their intrinsic anharmonicity, the ease of manipulation, and relatively long coherence times $6%, the metastable macroscopic quantum states of the junctions could be used as the states of the qubits. That idea had recently been supported by successful experimental demonstrations ...
hep-th/0302002 PDF - at www.arxiv.org.
... The aim of the present work is a systematic and detailed theory of different pictures of motion in Lagrangian quantum field theory and the derivation of the Euler-Lagrange and Heisenberg equations of motion in them for general Lagrangians, with or without derivative coupling. We should mention, in t ...
... The aim of the present work is a systematic and detailed theory of different pictures of motion in Lagrangian quantum field theory and the derivation of the Euler-Lagrange and Heisenberg equations of motion in them for general Lagrangians, with or without derivative coupling. We should mention, in t ...
Communications: Entanglement switch for dipole arrays
... around 1, and cooling the dipoles to temperatures 共T兲 corresponding to a fraction of the dipole-dipole interaction energy 共⍀兲.30 For a dipole moment 共p兲 of few debyes, and a typical experimental electric field 共⬃105 V / m, required for the dipole moment to actually manifest itself12,31兲, dipoledipol ...
... around 1, and cooling the dipoles to temperatures 共T兲 corresponding to a fraction of the dipole-dipole interaction energy 共⍀兲.30 For a dipole moment 共p兲 of few debyes, and a typical experimental electric field 共⬃105 V / m, required for the dipole moment to actually manifest itself12,31兲, dipoledipol ...
These notes
... especially within the lowest LL. The first observed fractional plateaus were at ν = 1/3 and ν = 2/3. Since then, a whole series of plateaux have been detected. The remarkable aspect is that for fractional ν values, there is a huge degeneracy of the N body states. Since, apart from impurities, the on ...
... especially within the lowest LL. The first observed fractional plateaus were at ν = 1/3 and ν = 2/3. Since then, a whole series of plateaux have been detected. The remarkable aspect is that for fractional ν values, there is a huge degeneracy of the N body states. Since, apart from impurities, the on ...
Composing Quantum Protocols in a Classical Environment
... remains classical. From a more theoretical point of view, our general security definition expresses what security properties a quantum protocol must satisfy in order to be able to instantiate a basic cryptographic primitive upon which an information-theoretic cryptographic construction is based. For ...
... remains classical. From a more theoretical point of view, our general security definition expresses what security properties a quantum protocol must satisfy in order to be able to instantiate a basic cryptographic primitive upon which an information-theoretic cryptographic construction is based. For ...
Supmech: the Geometro-statistical Formalism Underlying Quantum
... ω(..., KX, ...) = Kω(..., X, ...) where K is in the center of the algebra; for notation, see section III] is also incorporated. Moreover, to accommodate fermionic objects on an equal footing with the bosonic ones, the scheme developed here is based on superalgebras. The scheme of mechanics develope ...
... ω(..., KX, ...) = Kω(..., X, ...) where K is in the center of the algebra; for notation, see section III] is also incorporated. Moreover, to accommodate fermionic objects on an equal footing with the bosonic ones, the scheme developed here is based on superalgebras. The scheme of mechanics develope ...
Gold, copper, silver and aluminum nanoantennas to enhance
... spheroid in water for different values of the nanoantenna axes. In Fig. 4(c) we plot the wavelengths at which the maximum Purcell factor is achieved, corresponding to the peak of the LSPR. These values are reported in Fig. 4(b). For the same wavelengths we have also computed the quantum efficiency η ...
... spheroid in water for different values of the nanoantenna axes. In Fig. 4(c) we plot the wavelengths at which the maximum Purcell factor is achieved, corresponding to the peak of the LSPR. These values are reported in Fig. 4(b). For the same wavelengths we have also computed the quantum efficiency η ...
Process, System, Causality, and Quantum Mechanics, A
... things like EPR in much the same way that xy = yx makes sense of the farmer’s sheep counts. What’s basically new here is that quantum phenomena in general can be represented as simple large number phenomena whose laws belong to the arithmetic of case counting. But what about non-locality? The collap ...
... things like EPR in much the same way that xy = yx makes sense of the farmer’s sheep counts. What’s basically new here is that quantum phenomena in general can be represented as simple large number phenomena whose laws belong to the arithmetic of case counting. But what about non-locality? The collap ...
Noncommuting Coordinates in the Landau Problem
... where θij is a constant, anti-symmetric two-index object, implies a coordinate uncertainty relation, resulting in a discretization of space itself (similar to the familiar quantum phase space) and the elimination of spatial singularities. The idea was suggested by Heisenberg in the 1930s as a way to ...
... where θij is a constant, anti-symmetric two-index object, implies a coordinate uncertainty relation, resulting in a discretization of space itself (similar to the familiar quantum phase space) and the elimination of spatial singularities. The idea was suggested by Heisenberg in the 1930s as a way to ...
Presentism and Quantum Gravity
... foliation (Goldstein and Teufel 2001, 284); and there are more radical approaches as well (such as the general ether theory of Schmelzer 2001). Fixed foliation quantum gravity is compatible with presentism. To show this, it will be helpful to utilize the semantic view of scientific theories (see fo ...
... foliation (Goldstein and Teufel 2001, 284); and there are more radical approaches as well (such as the general ether theory of Schmelzer 2001). Fixed foliation quantum gravity is compatible with presentism. To show this, it will be helpful to utilize the semantic view of scientific theories (see fo ...
Simulating physics with computers
... the physics that we could detect experimentally. They might be very small anisotropies. Physical knowledge is of course always incomplete, and you can always say we'll try to design something which beats experiment a t the present time, but which predicts anistropies on some scale to be found later. ...
... the physics that we could detect experimentally. They might be very small anisotropies. Physical knowledge is of course always incomplete, and you can always say we'll try to design something which beats experiment a t the present time, but which predicts anistropies on some scale to be found later. ...
Nature physics
... Despite the presence of interactions between the particles trapped in an optical lattice, which lead to nonlinear terms in the Schrödinger-like equation known as the Gross–Pitaevskii equation35, a macroscopic wavefunction still very well describes the quantum many-body system in the weakly interacti ...
... Despite the presence of interactions between the particles trapped in an optical lattice, which lead to nonlinear terms in the Schrödinger-like equation known as the Gross–Pitaevskii equation35, a macroscopic wavefunction still very well describes the quantum many-body system in the weakly interacti ...