Scientific Report 2015 - 2016 - PCS
... bands and compact localized states under the impact of disorder, external fields, few- and many-body interactions, both on a quantum as well as on a classical (nonlinear) level. Second, we study various aspects of geometric frustration. We study how structural and bond disorder lead to an ordered st ...
... bands and compact localized states under the impact of disorder, external fields, few- and many-body interactions, both on a quantum as well as on a classical (nonlinear) level. Second, we study various aspects of geometric frustration. We study how structural and bond disorder lead to an ordered st ...
Nonclassical states of light propagating in Kerr media
... now call photons. It was the beginning of quantum era. Nowadays, nonclassical properties of optical fields are the subject of intense studies for more than a decade now. Phenomena such as photon antibunching and squeezing, which have no classical analogues, are well known. To observe them it is esse ...
... now call photons. It was the beginning of quantum era. Nowadays, nonclassical properties of optical fields are the subject of intense studies for more than a decade now. Phenomena such as photon antibunching and squeezing, which have no classical analogues, are well known. To observe them it is esse ...
Physics at the FQMT`11 conference
... processes during experiments on nano-size systems which must be, due to their contacts, understood as open systems. These transients, switching-on or off processes, generally start from highly non-equilibrium quantum initial states. The proper understanding of formulation of the initial state (i.e. ...
... processes during experiments on nano-size systems which must be, due to their contacts, understood as open systems. These transients, switching-on or off processes, generally start from highly non-equilibrium quantum initial states. The proper understanding of formulation of the initial state (i.e. ...
Studies in Quantum Information Theory
... The thesis consists of three main parts. The first part describes my work on continuousvariable cluster states, a new platform for quantum computation. This begins with background material discussing classical and quantum computation and emphasizing the physical underpinnings of each, followed by a ...
... The thesis consists of three main parts. The first part describes my work on continuousvariable cluster states, a new platform for quantum computation. This begins with background material discussing classical and quantum computation and emphasizing the physical underpinnings of each, followed by a ...
Quantum computing with cavity QED
... [12]. The idea is to use neutral atoms in an optical cavity for the storage of the qubits. The qubits are stored in the Zeeman ground state levels of the trapped atoms. Different laser beams can address them individually in order to manipulate the qubits for writing and reading purposes as shown sch ...
... [12]. The idea is to use neutral atoms in an optical cavity for the storage of the qubits. The qubits are stored in the Zeeman ground state levels of the trapped atoms. Different laser beams can address them individually in order to manipulate the qubits for writing and reading purposes as shown sch ...
Introduction to ”Topological Geometrodynamics: an Overview
... vanishing weak gauge fields so that parity breaking effects emerge just as they do in standard model. Also string model like picture emerges from TGD and one ends up with a rather concrete view about generalized Feynman diagrammatics. A possible objection is that the Kähler-Dirac gamma matrices do ...
... vanishing weak gauge fields so that parity breaking effects emerge just as they do in standard model. Also string model like picture emerges from TGD and one ends up with a rather concrete view about generalized Feynman diagrammatics. A possible objection is that the Kähler-Dirac gamma matrices do ...
Hubbard model description of silicon spin qubits: charge stability
... the plunger gate voltages VP 1 and VP 2 ) are no longer basic variables in our theory since they control all electrons while electrons in the effective two-electron regime simply feel a different potential which depends on the overall electrostatic potential, the separation between the fabricated ga ...
... the plunger gate voltages VP 1 and VP 2 ) are no longer basic variables in our theory since they control all electrons while electrons in the effective two-electron regime simply feel a different potential which depends on the overall electrostatic potential, the separation between the fabricated ga ...
Could light harvesting complexes exhibit non
... to conclude once and for all that the quantum biological models are the correct models simply because they coincide with the observations of some experiments (Leggett (2002, 2008) stresses this point in several of his papers). It would be useful to irrevocably exclude certain classes of classical mo ...
... to conclude once and for all that the quantum biological models are the correct models simply because they coincide with the observations of some experiments (Leggett (2002, 2008) stresses this point in several of his papers). It would be useful to irrevocably exclude certain classes of classical mo ...
... the idea of computation based on quantum mechanics. He observed that the only way to effectively model a quantum mechanical system would be by using another quantum mechanical system. Since then, quantum simulators have been studied with great success both theoretically and experimentally and may be ...
Quantum Hall Effects and Related Topics International Symposium
... the metrology world because it would allow for the first time a direct comparison of the quantisation in a completely different system with that in conventional semiconductor systems like GaAs or Si. The intrinsic properties of graphene are such that the breakdown current for the QHE is extremely larg ...
... the metrology world because it would allow for the first time a direct comparison of the quantisation in a completely different system with that in conventional semiconductor systems like GaAs or Si. The intrinsic properties of graphene are such that the breakdown current for the QHE is extremely larg ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.