
Inequivalence of pure state ensembles for open quantum systems
... environment of the system, an experimenter could collapse the system state into a stochastically evolving pure state, such that the proportion of time it is in a particular pure state is equal to the weight of that pure state in the ensemble. For uniform Gaussian ensembles for systems with linear dy ...
... environment of the system, an experimenter could collapse the system state into a stochastically evolving pure state, such that the proportion of time it is in a particular pure state is equal to the weight of that pure state in the ensemble. For uniform Gaussian ensembles for systems with linear dy ...
Chapter 2 Wave Mechanics and the Schrödinger equation
... the solution is oscillatory, whereas in the classically forbidden realm of E < V (x) we find a superposition of exponential growth and of exponential decay. Normalizability of the solution requires that the coefficient C of exponential growth for x → ∞ and the coefficient D of exponential decay for ...
... the solution is oscillatory, whereas in the classically forbidden realm of E < V (x) we find a superposition of exponential growth and of exponential decay. Normalizability of the solution requires that the coefficient C of exponential growth for x → ∞ and the coefficient D of exponential decay for ...
Quantum Theory: a Pragmatist Approach
... and/or descriptions of the physical world. In (Healey 1989, 6) I expressed sympathy for such a tie as follows: “I should like to add...that a satisfactory interpretation of quantum mechanics should make it clear what the world would be like if quantum mechanics were true.” But I continued by noting ...
... and/or descriptions of the physical world. In (Healey 1989, 6) I expressed sympathy for such a tie as follows: “I should like to add...that a satisfactory interpretation of quantum mechanics should make it clear what the world would be like if quantum mechanics were true.” But I continued by noting ...
Optical and Quantum Communications
... line of research aimed at evaluating capacities of bosonic communication channels, which began with the capacity derivation for the input photon-number constrained lossless bosonic channel [3,4]. The capacity of the lossy bosonic channel was found in [5], where it was shown that a modulation scheme ...
... line of research aimed at evaluating capacities of bosonic communication channels, which began with the capacity derivation for the input photon-number constrained lossless bosonic channel [3,4]. The capacity of the lossy bosonic channel was found in [5], where it was shown that a modulation scheme ...
Fokker-Planck theory of superstatistics
... Bose-Einstein condensates of photons [20], and quantum turbulence [21]. A question of central importance about superstatistics is what the relevant procedure is for determining f (! ) . Without clarifying this, Eq. (1) is formal: f (! ) remains just the inverse Laplace transformation of the observed ...
... Bose-Einstein condensates of photons [20], and quantum turbulence [21]. A question of central importance about superstatistics is what the relevant procedure is for determining f (! ) . Without clarifying this, Eq. (1) is formal: f (! ) remains just the inverse Laplace transformation of the observed ...
Quantum and Classical Query Complexities of Local Search are
... positive integers whose sum is less than 2n , and where one looks for two different subsets summing up to the same number. The elements of PPAD are search problems, where the existence of a solution is guaranteed by the fact that in a graph the number of vertices with odd degree is even. The collisi ...
... positive integers whose sum is less than 2n , and where one looks for two different subsets summing up to the same number. The elements of PPAD are search problems, where the existence of a solution is guaranteed by the fact that in a graph the number of vertices with odd degree is even. The collisi ...
The notion of four-momentum in TGD
... elementary particle spectrum can be understood if Super Virasoro algebra has five tensor factors. Can one decide the fate of the two approaches to EP using this number as an input? 1. For the coset option the situation is unclear. Even the definition of coset representation is problematic. If Super ...
... elementary particle spectrum can be understood if Super Virasoro algebra has five tensor factors. Can one decide the fate of the two approaches to EP using this number as an input? 1. For the coset option the situation is unclear. Even the definition of coset representation is problematic. If Super ...
quantum - Word Format
... use of the quantum mechanical properties of particles to emulate the process of the classical Turing Machine. As a high-level computational model, the classical Turing Machine does not make any assumptions about its physical implementation, and its computation is completely independent of the underl ...
... use of the quantum mechanical properties of particles to emulate the process of the classical Turing Machine. As a high-level computational model, the classical Turing Machine does not make any assumptions about its physical implementation, and its computation is completely independent of the underl ...
Chapter 4 - Fredericksburg City Public Schools
... http://www.fnal.gov/pub/inquiring/timeline/images/pauli.jpg ...
... http://www.fnal.gov/pub/inquiring/timeline/images/pauli.jpg ...
Effect of Spin-Orbit Interaction and In
... quantization. Most quasi-one-dimensional systems, or quantum wires, are created by a split gate technique in a twodimensional electron gas 共2DEG兲.6,7 When a negative potential is applied to the gates, the electrons are depleted underneath. Thus, a one-dimensional channel is created between two reser ...
... quantization. Most quasi-one-dimensional systems, or quantum wires, are created by a split gate technique in a twodimensional electron gas 共2DEG兲.6,7 When a negative potential is applied to the gates, the electrons are depleted underneath. Thus, a one-dimensional channel is created between two reser ...
Optical and Structural Characterization of GaN Based Hybrid Structures and Nanorods
... Time-resolved photoluminescence was used to investigate the QW exciton dynamics in these hybrids depending on the cap layer thickness. From comparison of the recombination rate in the bare QW structure and the hybrid, the efficiency of the non-radiative resonant energy transfer between the QW and th ...
... Time-resolved photoluminescence was used to investigate the QW exciton dynamics in these hybrids depending on the cap layer thickness. From comparison of the recombination rate in the bare QW structure and the hybrid, the efficiency of the non-radiative resonant energy transfer between the QW and th ...
Is the Quantum World Composed of Propensitons
... (2) OQT is ambiguous, in that if the measuring process is treated as a measurement, the outcome is in general probabilistic, but if this process is treated quantum mechanically, the outcome is deterministic. OQT is ambiguous concerning the fundamental question as to whether the quantum domain is det ...
... (2) OQT is ambiguous, in that if the measuring process is treated as a measurement, the outcome is in general probabilistic, but if this process is treated quantum mechanically, the outcome is deterministic. OQT is ambiguous concerning the fundamental question as to whether the quantum domain is det ...
Two-channel competition of autoionizing Rydberg states in an electric field
... are two advantages of this excitation scheme over singlephoton excitation of the metastable states by a UV pulse: As can be seen in Fig. 4 the relative intensity of the FI and AI signals 关features 共a兲 and 共f兲兴 as compared to the DI signal 共b兲 greatly enhances upon using the R⫹Nd:YAG combination. The ...
... are two advantages of this excitation scheme over singlephoton excitation of the metastable states by a UV pulse: As can be seen in Fig. 4 the relative intensity of the FI and AI signals 关features 共a兲 and 共f兲兴 as compared to the DI signal 共b兲 greatly enhances upon using the R⫹Nd:YAG combination. The ...
- Philsci
... outcome is in general probabilistic, but if this process is treated quantum mechanically, the outcome is deterministic. OQT is ambiguous concerning the fundamental question as to whether the quantum domain is deterministic or probabilistic. (3) OQT is very seriously ad hoc, in that it consists of t ...
... outcome is in general probabilistic, but if this process is treated quantum mechanically, the outcome is deterministic. OQT is ambiguous concerning the fundamental question as to whether the quantum domain is deterministic or probabilistic. (3) OQT is very seriously ad hoc, in that it consists of t ...
Chain rules for quantum Rényi entropies
... and can be used to prove strong converses for a variety of information theoretical problems [WWY14; CMW14; TWW14]. Furthermore, because of this wide applicability, the fundamental properties of Dα and Hα are being investigated: a number of properties have been proven in [ML+13], including the data p ...
... and can be used to prove strong converses for a variety of information theoretical problems [WWY14; CMW14; TWW14]. Furthermore, because of this wide applicability, the fundamental properties of Dα and Hα are being investigated: a number of properties have been proven in [ML+13], including the data p ...
May 31, 2014
... T-duality [BuNi14] and geometric Langlands duality [KaWi06]. However, while punctual examples of quantization have been absorbed into mathematics this way, quantization as a whole proverbially remains a mystery. It is used as a powerful heuristics whose mathematical content however has to be guessed ...
... T-duality [BuNi14] and geometric Langlands duality [KaWi06]. However, while punctual examples of quantization have been absorbed into mathematics this way, quantization as a whole proverbially remains a mystery. It is used as a powerful heuristics whose mathematical content however has to be guessed ...
Chapter 3. Foundations of Quantum Theory II
... An axiom of quantum theory asserts that a measurement may be described as an orthogonal projection operator. But if a measurement of system S is realized by performing an orthogonal measurement on a larger system that contains S, the resulting operation performed on S alone need not be an orthogonal ...
... An axiom of quantum theory asserts that a measurement may be described as an orthogonal projection operator. But if a measurement of system S is realized by performing an orthogonal measurement on a larger system that contains S, the resulting operation performed on S alone need not be an orthogonal ...
- Harish-Chandra Research Institute
... 3. Multi-Partite Quantum Correlations Revel Frustration in a Quantum Ising Spin System. K. Rama Koteswara Rao, Hemant Katiyar, T.S. Mahesh, Aditi Sen (De), Ujjwal Sen and ...
... 3. Multi-Partite Quantum Correlations Revel Frustration in a Quantum Ising Spin System. K. Rama Koteswara Rao, Hemant Katiyar, T.S. Mahesh, Aditi Sen (De), Ujjwal Sen and ...
Quantum electrodynamics

In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.