Numerical simulation of information recovery in quantum computers.
... interference and parallelism. Both of them require creation and manipulation of entanglement states involving large ensembles of quantum bits (qubits). One of the fundamental obstacles in the development of quantum computers is the loss of coherence of the quantum states involved. Decoherence produc ...
... interference and parallelism. Both of them require creation and manipulation of entanglement states involving large ensembles of quantum bits (qubits). One of the fundamental obstacles in the development of quantum computers is the loss of coherence of the quantum states involved. Decoherence produc ...
Concepts of Modern Physics
... quantum ideas are considered first to provide a framework for understanding the physics of atoms and nuclei. The theory of the atom is then developed with emphasis on quantum-mechanical notions. Next comes a discussion of the properties of aggregates of atoms, which includes a look at statistical me ...
... quantum ideas are considered first to provide a framework for understanding the physics of atoms and nuclei. The theory of the atom is then developed with emphasis on quantum-mechanical notions. Next comes a discussion of the properties of aggregates of atoms, which includes a look at statistical me ...
Full-Text PDF
... transport [37–39], information theory [40–44], fractality [43] and entanglement [45,46]. Moreover, the D-dimensional quantum harmonic oscillator is closely related to completely classical periodic systems in Nature. In elementary particle physics, we encounter many oscillating modes whose energy pac ...
... transport [37–39], information theory [40–44], fractality [43] and entanglement [45,46]. Moreover, the D-dimensional quantum harmonic oscillator is closely related to completely classical periodic systems in Nature. In elementary particle physics, we encounter many oscillating modes whose energy pac ...
Geometrical aspects of local gauge symmetry - Philsci
... analysis that it should be able to manage them? Are monopoles and instantons not marginal examples? Is it necessary to cope with them, if our ultimate goal is to discuss the interpretation of gauge symmetry? My answer to these legitimate inquiries is in the same line that the one I gave against conc ...
... analysis that it should be able to manage them? Are monopoles and instantons not marginal examples? Is it necessary to cope with them, if our ultimate goal is to discuss the interpretation of gauge symmetry? My answer to these legitimate inquiries is in the same line that the one I gave against conc ...
ABSTRACT Three-Body Recombination and Rydberg Atoms in Ultracold Plasmas
... the atomic beam propagates)[3]. This is done by using two coils - the slower coil, providing the larger, positive field and running at about 35 A, and the reverse slower coil, providing the smaller, negative field and running at about 4.2 A. We use this configuration so that a smaller absolute field ...
... the atomic beam propagates)[3]. This is done by using two coils - the slower coil, providing the larger, positive field and running at about 35 A, and the reverse slower coil, providing the smaller, negative field and running at about 4.2 A. We use this configuration so that a smaller absolute field ...
Signatures of Majorana zero-modes in nanowires, quantum spin
... its anti-particle. Such Majorana fermions may or may not be realized as fundamental particles in high energy physics, but in superconductors they appear naturally when a Cooper pair breaks up [2]. In field theory, particles that are their own anti-particles must be described by a real field, as the ...
... its anti-particle. Such Majorana fermions may or may not be realized as fundamental particles in high energy physics, but in superconductors they appear naturally when a Cooper pair breaks up [2]. In field theory, particles that are their own anti-particles must be described by a real field, as the ...
Quantum non-demolition - Quantum Optics and Spectroscopy
... from the inability to create pure states. This prevents scaling of this technology to higher numbers of quantum bits. Solid state implementations offer the promise of easy scalability akin to integrated circuits as soon as one is able to reliably manufacture and control the basic building blocks. In ...
... from the inability to create pure states. This prevents scaling of this technology to higher numbers of quantum bits. Solid state implementations offer the promise of easy scalability akin to integrated circuits as soon as one is able to reliably manufacture and control the basic building blocks. In ...
Semiconductor Physics Sectional Programme Overview
... The development of quantum cascade lasers operating at terahertz frequencies is proceeding at a very rapid pace. For their successful practical implementation, specific requirements have now to be addressed, particularly concerning the properties of the emitted radiation. Single-mode THz lasers with ...
... The development of quantum cascade lasers operating at terahertz frequencies is proceeding at a very rapid pace. For their successful practical implementation, specific requirements have now to be addressed, particularly concerning the properties of the emitted radiation. Single-mode THz lasers with ...
Lateral Quantum Dots in Strained Silicon/Silicon-Germanium
... on high mobility silicon/silicon-germanium modulation-doped samples. As the size of the lateral quantum dots is comparable with the electron wavefunction, the wave nature of the electrons plays a significant role, and the energy levels in the dots are quantized. Starting point for the fabrication we ...
... on high mobility silicon/silicon-germanium modulation-doped samples. As the size of the lateral quantum dots is comparable with the electron wavefunction, the wave nature of the electrons plays a significant role, and the energy levels in the dots are quantized. Starting point for the fabrication we ...
Quantum computation and quantum information (PDF
... (such as position or velocity) to isolated quantum entities (such as electrons, photons or other elementary particles). The properties of quantum systems only make sense in light of the measurements we make. Taken to its limit, the Copenhagen interpretation denies the reality of an individual photon ...
... (such as position or velocity) to isolated quantum entities (such as electrons, photons or other elementary particles). The properties of quantum systems only make sense in light of the measurements we make. Taken to its limit, the Copenhagen interpretation denies the reality of an individual photon ...
Multi-particle qubits - Department of Physics — ETH Zurich
... over multiple spin-1/2 qubits. We divide the ways of encoding a qubit into three categories and introduce each category using case studies. For each qubit encoding scheme we search for possible physical operations that will implement universal quantum computation over this qubit and, thus, pose a su ...
... over multiple spin-1/2 qubits. We divide the ways of encoding a qubit into three categories and introduce each category using case studies. For each qubit encoding scheme we search for possible physical operations that will implement universal quantum computation over this qubit and, thus, pose a su ...
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.