New frontiers in quantum cascade lasers
... enough energy at the steps to create an electron–hole pair by impact ionization at the potential step given by band discontinuity. The number of stages typically ranges from 20 to 35 for lasers designed to emit in the 4–8 μm range, but working lasers can have as few as one or as many as over 100 sta ...
... enough energy at the steps to create an electron–hole pair by impact ionization at the potential step given by band discontinuity. The number of stages typically ranges from 20 to 35 for lasers designed to emit in the 4–8 μm range, but working lasers can have as few as one or as many as over 100 sta ...
Approaches to Quantum Gravity
... clearly come from looking at how similar difficulties had been solved in another. It is even possible that, in order to achieve our common goal, formulate a complete theory of Quantum Gravity and unravel the fundamental nature of space and time, we will have to regard (at least some of) these approa ...
... clearly come from looking at how similar difficulties had been solved in another. It is even possible that, in order to achieve our common goal, formulate a complete theory of Quantum Gravity and unravel the fundamental nature of space and time, we will have to regard (at least some of) these approa ...
Quantum conditional probability - E
... Bayesianism and was crucial for the first part of the project. Developing it with Arthur has been of invaluable help; it was Arthur’s insight which guided my research to focus on the conceptual analysis of the notion of conditional probability, something which has turned out to be extremely fruitful ...
... Bayesianism and was crucial for the first part of the project. Developing it with Arthur has been of invaluable help; it was Arthur’s insight which guided my research to focus on the conceptual analysis of the notion of conditional probability, something which has turned out to be extremely fruitful ...
URL - StealthSkater
... The vision about a number theoretic formulation of Quantum-TGD is based on the gradual accumulation of wisdom coming from different sources. The attempts to find a formulation allowing to understand real and p-Adic physics as aspects of some more general scenario have been an important stimulus and ...
... The vision about a number theoretic formulation of Quantum-TGD is based on the gradual accumulation of wisdom coming from different sources. The attempts to find a formulation allowing to understand real and p-Adic physics as aspects of some more general scenario have been an important stimulus and ...
Lie algebra decompositions with applications to quantum dynamics
... concatenation of these control functions give the full control that drives X to the desired target state Xf . It is clear that some decompositions may be more convenient than others, depending on the particular situation at hand. Hence, it is important to have several ways to decompose the Lie group ...
... concatenation of these control functions give the full control that drives X to the desired target state Xf . It is clear that some decompositions may be more convenient than others, depending on the particular situation at hand. Hence, it is important to have several ways to decompose the Lie group ...
Teaching Theoretical Physics: the cases of Enrico Fermi and Ettore
... had not given any course before: a circumstance likely due to the lack of students. The first two programs correspond to the courses in Mathematical Methods of Quantum Mechanics and Atomic Physics, respectively, and partially overlap. In presenting Quantum Mechanics, Majorana aimed to use group-theo ...
... had not given any course before: a circumstance likely due to the lack of students. The first two programs correspond to the courses in Mathematical Methods of Quantum Mechanics and Atomic Physics, respectively, and partially overlap. In presenting Quantum Mechanics, Majorana aimed to use group-theo ...
Full-Text PDF
... highlight the distinction between the joint measurement of a pair of observables and any scenario where the outcome distributions are reconstructed from the full distribution of a third measurement. In this paper, we take a step away from this usual framework and study joint measurements of observab ...
... highlight the distinction between the joint measurement of a pair of observables and any scenario where the outcome distributions are reconstructed from the full distribution of a third measurement. In this paper, we take a step away from this usual framework and study joint measurements of observab ...
∗ ∗
... than I can. It is not relevant to the present discussion, in any case. I will simply (but harmlessly, I suppose) assume that quantum mechanics is the one and only true theory that encompasses all these phenomena, largely ignore the facts and confine myself to discussing the theory. But the crucial p ...
... than I can. It is not relevant to the present discussion, in any case. I will simply (but harmlessly, I suppose) assume that quantum mechanics is the one and only true theory that encompasses all these phenomena, largely ignore the facts and confine myself to discussing the theory. But the crucial p ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).