The Quantum Phases of Matter The Harvard community has made
... In the past thirty years, the application of quantum theory to many particle physics has entered a new terrain. It has become clear that many phases of quantum matter cannot be described by extensions of the one-particle theory, and new paradigms of the quantum behavior of many particles are needed. ...
... In the past thirty years, the application of quantum theory to many particle physics has entered a new terrain. It has become clear that many phases of quantum matter cannot be described by extensions of the one-particle theory, and new paradigms of the quantum behavior of many particles are needed. ...
Particle Physics
... suggestive that the appropriate equations for a massive spin-1 particle can be obtained by replacing This is indeed the case, and from QFT it can be shown that for a massive spin 1 particle equation (A5) becomes Therefore a free particle must satisfy (B4) ...
... suggestive that the appropriate equations for a massive spin-1 particle can be obtained by replacing This is indeed the case, and from QFT it can be shown that for a massive spin 1 particle equation (A5) becomes Therefore a free particle must satisfy (B4) ...
information - Clay and Iron
... to operate with a clearly definable set of frequency resonant values. The quantumcoherent oscillations of these structures seem to operate in synchrony with a fixed set of harmonic resonances. It is of more than passing interest that the entire spectrum of these resonances may have been described in ...
... to operate with a clearly definable set of frequency resonant values. The quantumcoherent oscillations of these structures seem to operate in synchrony with a fixed set of harmonic resonances. It is of more than passing interest that the entire spectrum of these resonances may have been described in ...
The roads not taken: empty waves, wavefunction collapse and
... secondary property. There is as yet only theoretical justification for the programme of modelling quantum matter in terms of an objective spacetime process; that some way of imagining how the quantum world works between measurements is surely better than none. Indeed, a benefit of such an approach c ...
... secondary property. There is as yet only theoretical justification for the programme of modelling quantum matter in terms of an objective spacetime process; that some way of imagining how the quantum world works between measurements is surely better than none. Indeed, a benefit of such an approach c ...
Phase-controlled localization and directed
... to the phenomenon wherein a particle initially localized in a lattice can transport within a finite distance and periodically return to its original state. There has been growing interest in the quantum control of electrons in semiconductor superlattices or arrays of coupled quantum dots from both t ...
... to the phenomenon wherein a particle initially localized in a lattice can transport within a finite distance and periodically return to its original state. There has been growing interest in the quantum control of electrons in semiconductor superlattices or arrays of coupled quantum dots from both t ...
Evolution of the Atomic Concept and the Beginnings of Modern
... Miletus (a town now in Turkey) and Democritus of Abdera. Their theories were naturally more philosophical than experimental in origin. The basic idea was that if you could look at matter on smaller and smaller scales (which they of course couldn't) ultimately you would see individual atoms - objects ...
... Miletus (a town now in Turkey) and Democritus of Abdera. Their theories were naturally more philosophical than experimental in origin. The basic idea was that if you could look at matter on smaller and smaller scales (which they of course couldn't) ultimately you would see individual atoms - objects ...
Core Problem - Max-Planck
... physicist from the Max Planck Institute of Quantum Optics is a good part of the reason for this liveliness: the community of experts that gathers there is working together to solve a puzzle that Pohl and his team created with its measurements of the proton radius. Time and time again, speakers prese ...
... physicist from the Max Planck Institute of Quantum Optics is a good part of the reason for this liveliness: the community of experts that gathers there is working together to solve a puzzle that Pohl and his team created with its measurements of the proton radius. Time and time again, speakers prese ...
Approximate Quantum Error-Correcting Codes and Secret Sharing
... Secret Sharing and Quantum Error Correction Classically, an (n, d)-secret sharing scheme splits a secret into n pieces so that no d−1 shares reveal any information about the secret, but any d shares allow one to reconstruct it. Such a scheme is already an error-correcting code, since it allows one ...
... Secret Sharing and Quantum Error Correction Classically, an (n, d)-secret sharing scheme splits a secret into n pieces so that no d−1 shares reveal any information about the secret, but any d shares allow one to reconstruct it. Such a scheme is already an error-correcting code, since it allows one ...
The Physics of Quantum Mechanics
... films are simply one category of color films, because black and white are both colors. Anyone moving from the world of only black-and-white to the world of color is opening up the door to a new world — a world ripe with new possibilities and new expression — without closing the door to the old world ...
... films are simply one category of color films, because black and white are both colors. Anyone moving from the world of only black-and-white to the world of color is opening up the door to a new world — a world ripe with new possibilities and new expression — without closing the door to the old world ...
Measurements in Quantum Optics
... After a short introduction to the general aspects of measurements in quantum mechanics, it presents three examples of a measurement process in concrete applications to quantum optics. For one, while operators describing quantities of interest might have a simple theoretical form, it is often hard to ...
... After a short introduction to the general aspects of measurements in quantum mechanics, it presents three examples of a measurement process in concrete applications to quantum optics. For one, while operators describing quantities of interest might have a simple theoretical form, it is often hard to ...
Towards A Quantum Mechanical Model of Foreign Policy
... sentence is either true or false. In Newtonian physics, the principle of bivalence is used to explain that an object is either a particle or a wave. This principle is also known as the principle of ‘either-or’.16 It attempts to understand reality in a mechanical binary format. An example of this arg ...
... sentence is either true or false. In Newtonian physics, the principle of bivalence is used to explain that an object is either a particle or a wave. This principle is also known as the principle of ‘either-or’.16 It attempts to understand reality in a mechanical binary format. An example of this arg ...
Topological Quantum Computing - Quantum Optics Group at ETH
... We should clarify what we mean when we talk about particles in two dimensions. Clearly, our world is three-dimensional, and even if we confine the ...
... We should clarify what we mean when we talk about particles in two dimensions. Clearly, our world is three-dimensional, and even if we confine the ...
Quantum critical temperature of a modulated oscillator Lingzhen Guo, Vittorio Peano, M. Marthaler,
... of switching is quantum activation [10,11]: transitions over an effective barrier due to diffusion over oscillator eigenstates. It recalls thermal activation [12], except that the diffusion is due to quantum fluctuations that come along with the oscillator relaxation, with h̄ playing the role of tem ...
... of switching is quantum activation [10,11]: transitions over an effective barrier due to diffusion over oscillator eigenstates. It recalls thermal activation [12], except that the diffusion is due to quantum fluctuations that come along with the oscillator relaxation, with h̄ playing the role of tem ...
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.