Quantum linear Boltzmann equation with finite intercollision time
... It is obvious that after our single collision the particle’s density matrix ˆ , whatever it was before the collision, becomes perfect diagonal in P储. Gradually, after many collisions, the state ˆ becomes a mixture of plane waves, no off-diagonal mechanism will be left at all. This result contradic ...
... It is obvious that after our single collision the particle’s density matrix ˆ , whatever it was before the collision, becomes perfect diagonal in P储. Gradually, after many collisions, the state ˆ becomes a mixture of plane waves, no off-diagonal mechanism will be left at all. This result contradic ...
Quantum Mechanical Ideal Diesel Engine
... consists of an ideal gas, as a working substance, that expands and pushes a piston in a cylinder. Quantum heat engines produce work using quantum matter as their working substance [1]. Heat engine streams into study of quantum theory as a part of a consequency for more miniaturization of devices, al ...
... consists of an ideal gas, as a working substance, that expands and pushes a piston in a cylinder. Quantum heat engines produce work using quantum matter as their working substance [1]. Heat engine streams into study of quantum theory as a part of a consequency for more miniaturization of devices, al ...
bilder/file/Quantum entanglement as a consequence
... Proceeding in this way Hardy’s subtle analysis arrives at a general expression for nonlocality which need not be associated with spin but rather any other measurable quantity as in our twoslit experiment for example [3,4]. Using Hardy’s notation the expression is [2] ...
... Proceeding in this way Hardy’s subtle analysis arrives at a general expression for nonlocality which need not be associated with spin but rather any other measurable quantity as in our twoslit experiment for example [3,4]. Using Hardy’s notation the expression is [2] ...
Quantum phase transitions and novel phases in condensed matter
... Phase diagrams of LiHoF4 and a typical high-Tc superconductor such as YBa2Cu3O6+x ...
... Phase diagrams of LiHoF4 and a typical high-Tc superconductor such as YBa2Cu3O6+x ...
Quantum Resistant Cryptography
... equation, the time-independent Schrödinger equation. If we want to solve this equation, in practice it is useful to assume the time and location can be separated in the wave function: ϕ(~r, t) = ϕ(~r)φ(t). In that case it is easy to solve the time part, and the location part leads to the eigenvalue ...
... equation, the time-independent Schrödinger equation. If we want to solve this equation, in practice it is useful to assume the time and location can be separated in the wave function: ϕ(~r, t) = ϕ(~r)φ(t). In that case it is easy to solve the time part, and the location part leads to the eigenvalue ...
Packard Poster-2 - Northwestern University Mesoscopic Physics
... Cooper pairs of electrons are naturally created. Though the constituent electrons of these pairs form a single quantum object, they are spatially separated by a coherence length x which can extend several hundred nanometers. As this length scale is now easily accessible to modern nanolithographic te ...
... Cooper pairs of electrons are naturally created. Though the constituent electrons of these pairs form a single quantum object, they are spatially separated by a coherence length x which can extend several hundred nanometers. As this length scale is now easily accessible to modern nanolithographic te ...
Hilbert Space Quantum Mechanics
... Hilbert space, or the system it represents, is referred to as a qubit (pronounced “cubit”). However, there are disanalogies as well. Linear combinations like 0.3|0i + 0.7i|1i make perfectly good sense in the Hilbert space, and have a respectable physical interpretation, but there is nothing analogou ...
... Hilbert space, or the system it represents, is referred to as a qubit (pronounced “cubit”). However, there are disanalogies as well. Linear combinations like 0.3|0i + 0.7i|1i make perfectly good sense in the Hilbert space, and have a respectable physical interpretation, but there is nothing analogou ...
Quantum random walks – new method for designing quantum
... Speedup for anything that can be expressed as a formula ...
... Speedup for anything that can be expressed as a formula ...
Topological Phases of Matter classification and application
... If a physical system were to have quantum topological (necessarily nonlocal) degrees of freedom, which were insensitive to local probes, then information contained in them would be automatically protected against errors caused by local interactions with the environment. This would be fault tolerance ...
... If a physical system were to have quantum topological (necessarily nonlocal) degrees of freedom, which were insensitive to local probes, then information contained in them would be automatically protected against errors caused by local interactions with the environment. This would be fault tolerance ...
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).