5, 4023 (2014)
... and d ¼ 0 has two degenerate local minima at quasi-momenta ±q, where q ¼ kR(1 (O/4ER)2)1/2. The spin polarization of these two states is finite and opposite to each other. An ensemble of non-interacting atoms occupies both states equally and thus has zero average spin polarization and quasi-momentu ...
... and d ¼ 0 has two degenerate local minima at quasi-momenta ±q, where q ¼ kR(1 (O/4ER)2)1/2. The spin polarization of these two states is finite and opposite to each other. An ensemble of non-interacting atoms occupies both states equally and thus has zero average spin polarization and quasi-momentu ...
Geometric Aspects and Neutral Excitations in the Fractional Quantum Hall Effect
... In real samples, the presense of disorder, however weak it is, is expected to localize the state and suppress the Hall conductivity[5, 6]. The surprising fact is at integer filling factor when the system is incompressible, the Hall conductivity is unaffected by disorder. On the contrary, any small d ...
... In real samples, the presense of disorder, however weak it is, is expected to localize the state and suppress the Hall conductivity[5, 6]. The surprising fact is at integer filling factor when the system is incompressible, the Hall conductivity is unaffected by disorder. On the contrary, any small d ...
Realizing the Harper Hamiltonian with Laser
... Systems of charged particles in magnetic fields have led to many discoveries in science—including both the integer [1] and the fractional [2,3] quantum Hall effects—and have become important paradigms of quantum many-body physics [4]. Generalizations have led to important developments in condensed m ...
... Systems of charged particles in magnetic fields have led to many discoveries in science—including both the integer [1] and the fractional [2,3] quantum Hall effects—and have become important paradigms of quantum many-body physics [4]. Generalizations have led to important developments in condensed m ...
Quantum Computational Complexity - Cheriton School of Computer
... One common feature of the most typically studied computational models and resource constraint is that they are physically motivated. This is quite natural, given that computers are physical devices, and to a significant extent it is their study that motivates and directs research on computational co ...
... One common feature of the most typically studied computational models and resource constraint is that they are physically motivated. This is quite natural, given that computers are physical devices, and to a significant extent it is their study that motivates and directs research on computational co ...
Decoherence and open quantum systems
... In quantum information theory entanglement is used as a source for many different applications, for instance in quantum cryptography, teleportation schemes or quantum computation. To keep this entanglement in the system as long as possible we have to protect it against different environmental influe ...
... In quantum information theory entanglement is used as a source for many different applications, for instance in quantum cryptography, teleportation schemes or quantum computation. To keep this entanglement in the system as long as possible we have to protect it against different environmental influe ...
Quantum nanophotonic phase switch with a single atom.
... and atomic population decay rates are given by k 5 2p 3 25 GHz and c 5 2p 3 6 MHz, respectively. The reflection coefficient in equation (1) changes sign depending on the presence (g . 1) or absence (g 5 0) of a strongly coupled atom. If the atom is prepared in a superposition of internal states, one ...
... and atomic population decay rates are given by k 5 2p 3 25 GHz and c 5 2p 3 6 MHz, respectively. The reflection coefficient in equation (1) changes sign depending on the presence (g . 1) or absence (g 5 0) of a strongly coupled atom. If the atom is prepared in a superposition of internal states, one ...
Physics Formulary
... prints, publishing by electronic or other means, implies full agreement to the above non-profit-use clause, unless upon explicit prior written permission of the author. This document is provided by the author “as is”, with all its faults. Any express or implied warranties, including, but not limited ...
... prints, publishing by electronic or other means, implies full agreement to the above non-profit-use clause, unless upon explicit prior written permission of the author. This document is provided by the author “as is”, with all its faults. Any express or implied warranties, including, but not limited ...
Quantum Mechanics
... mechanics has been built on a foundation that contains a number of concepts that are fundamentally different from those of classical physics and which have radically altered our view of the way the natural universe operates. This book aims to elucidate and discuss the conceptual basis of the subject ...
... mechanics has been built on a foundation that contains a number of concepts that are fundamentally different from those of classical physics and which have radically altered our view of the way the natural universe operates. This book aims to elucidate and discuss the conceptual basis of the subject ...
Ph.D. Thesis Giuseppe Prettico
... and transmitted when encoded on quantum states. New information applications become possible when resorting to intrinsically quantum properties. Here we focus on the relations among some of these quantum properties. More precisely, we establish connections between entanglement distillation and secre ...
... and transmitted when encoded on quantum states. New information applications become possible when resorting to intrinsically quantum properties. Here we focus on the relations among some of these quantum properties. More precisely, we establish connections between entanglement distillation and secre ...
Improvement by laser quenching of an `atom diode`: a
... where (x, x0 ) = exp[−(x − x0 )2 /(2σ 2 )]. It is important that the distance xW − xP is not too small because otherwise the mirror potential spoils the STIRAP transfer, and of course xQ xW must hold such that the atom crossing rightwards has passed the mirror potential before it decays to state ...
... where (x, x0 ) = exp[−(x − x0 )2 /(2σ 2 )]. It is important that the distance xW − xP is not too small because otherwise the mirror potential spoils the STIRAP transfer, and of course xQ xW must hold such that the atom crossing rightwards has passed the mirror potential before it decays to state ...
Scattering theory - Theory of Condensed Matter
... factor, e±ikr(1−cos θ) where θ denotes the angle between k and r. For r → ∞, the small angular integration implied by any physical measurement leads to a fast oscillation of this factor. As a result, such terms are strongly suppressed and can be neglected. Retaining only those terms where the phase ...
... factor, e±ikr(1−cos θ) where θ denotes the angle between k and r. For r → ∞, the small angular integration implied by any physical measurement leads to a fast oscillation of this factor. As a result, such terms are strongly suppressed and can be neglected. Retaining only those terms where the phase ...
at the STI Experts Meeting - The Information Philosopher
... Similarly, the Law of Large Numbers of statistical events ensures that, normally, microscopic quantum events average out for manyparticle systems to produce regular, though statistical, laws. The world thus shows us an "adequate determinism" for large objects that in no way denies the fundamental an ...
... Similarly, the Law of Large Numbers of statistical events ensures that, normally, microscopic quantum events average out for manyparticle systems to produce regular, though statistical, laws. The world thus shows us an "adequate determinism" for large objects that in no way denies the fundamental an ...
Topological Classification of Insulators and Superconductors
... When it turned out that the QHE was an example of one of the classes that Wigner and Dyson found [3], it was clear that the symmetry classes could also be realized in condensed matter systems. Here the precise interaction of all particles is to complex to give a Hamiltonian, so by representing it by ...
... When it turned out that the QHE was an example of one of the classes that Wigner and Dyson found [3], it was clear that the symmetry classes could also be realized in condensed matter systems. Here the precise interaction of all particles is to complex to give a Hamiltonian, so by representing it by ...
Centre de Physique Théorique
... CPT personnel The CPT permanent research staff (see the Table on the preceding page which displays a nominative list organized according to the four partner institutions: U2, U1, USTV, and CNRS) is a balanced composition of 51 employees of the laboratory’s four partner institutions: 15 university fa ...
... CPT personnel The CPT permanent research staff (see the Table on the preceding page which displays a nominative list organized according to the four partner institutions: U2, U1, USTV, and CNRS) is a balanced composition of 51 employees of the laboratory’s four partner institutions: 15 university fa ...
Electronic transport in graphene nanostructures on SiO
... suppression is indicative of strong localization in the ribbon. This gate-voltage range, gray-shaded in the figure, is called the transport gap. It has been found in other experiments that the transport gap depends only weakly on the ribbon length [38], but is inversely proportional to the ribbon wid ...
... suppression is indicative of strong localization in the ribbon. This gate-voltage range, gray-shaded in the figure, is called the transport gap. It has been found in other experiments that the transport gap depends only weakly on the ribbon length [38], but is inversely proportional to the ribbon wid ...
Some Problems in Quantum Information Theory
... Kraus: “Two observables A and B of an n-level system (i.e., a quantum system with n-dimensional state space) are called complementary, if knowledge of the measured value of A implies maximal uncertainty of the measured value of B, and vice versa.” Also called “maximally incompatible”. ...
... Kraus: “Two observables A and B of an n-level system (i.e., a quantum system with n-dimensional state space) are called complementary, if knowledge of the measured value of A implies maximal uncertainty of the measured value of B, and vice versa.” Also called “maximally incompatible”. ...
