搜索结果: 1-15 共查到“知识库 物理学其他学科 quantum”相关记录31条 . 查询时间(0.151 秒)
Chiral spin currents and spectroscopically accessible single merons in quantum dots
currents merons quantum dots
2011/9/9
We provide unambiguous theoretical evidence for the formation of correlation-induced isolated merons in rotationally-symmetric quantum dots. Our calculations rely on neither the lowest-Landau-level ap...
The interpretation of quantum mechanics and of probability: Identical role of the 'observer'
quantum mechanics probability
2011/9/14
The aim of the article is to argue that the interpretations of quantum mechanics and of probability are much closer than usually thought. Indeed, a detailed analysis of the concept of probability (wit...
Numerical approach to SUSY quantum mechanics and the gauge/gravity duality
Numerical approach SUSY quantum mechanics
2010/12/23
We demonstrate that Monte-Carlo simulation is a practical tool to study nonperturbative aspects of supersymmetric quantum mechanics. As an example we study D0-brane quantum mechanics in the context of...
We introduce a new type of cryptographic primitive that we call hiding fingerprinting. A (quantum) fingerprinting scheme translates a binary string of length $n$ to $d$ (qu)bits, typically $d\ll n$, s...
Time-delay of classical and quantum scattering processes: a conceptual overview and a general definition
Time-delay classical quantum scattering processes conceptual overview general definition
2010/11/8
We present a step by step introduction to the notion of time-delay in classical and quantum mechanics, with the aim of clarifying its foundation at a conceptual level. In doing so, we motivate the in...
Dynamical control of quantum state transfer within hybrid open systems
Dynamical control quantum state transfer hybrid open systems
2010/11/8
We analyze quantum state-transfer optimization within hybrid open systems, from a "noisy" (write-in) qubit to its "quiet" counterpart (storage qubit). Intriguing interplay is revealed between our abil...
The classicality and quantumness of a quantum ensemble
classicality quantumness quantum ensemble
2010/11/8
In this paper, we investigate the classicality and quantumness of a quantum ensemble. We define a quantity called classicality to characterize how classical a quantum ensemble is. An ensemble of commu...
Environmental influences on Quantum Monty Hall problem
Environmental influences Quantum Monty Hall problem
2010/11/8
We reformulate the quantum Monty Hall problem in the presence of decoherence. The decoherence destroys the fairness of the game. A new Nash equilibrium for a particular strategy profile in the presenc...
Key Distribution based on Three Player Quantum Games
Three-Player Quantum Game Quantum Key Distribution
2010/11/4
We study a new QKD that is different from the scheme proposed by \cite{Ramz2}, though it essentially takes our ground on three-player quantum games and Greenberg-Horne-Zeilinger triplet entangled sta...
Generation of time-bin entangled photon pairs using a quantum-dot cavity system
time-bin entangled photon pairs quantum-dot cavity system
2010/11/4
We present a scheme to realize a deterministic solid state source of time-bin entangled photon pairs using cavity-assisted stimulated Raman adiabatic passage (STIRAP) in a single quantum dot. The quan...
Quantum interference in a four-level system of a $^{87}\mathrm{Rb}$ atom: Effects of spontaneously generated coherence
interference spontaneously generated coherence
2010/10/29
In this work, the effects of quantum interference and spontaneously generated coherence (SGC) are theoretically analyzed in a four level system of a $^{87}\mathrm{Rb}$ atom. For the effects of SGC, we...
The set of trace preserving, positive maps acting on density matrices of size d forms a convex body. We investigate its nested subsets consisting of k-positive maps, where k=2,...,d. Working with the ...
We show with explicit formulas that one can completely identify an unknown quantum process with only one weakly entangled state; and identify a quantum optical Gaussian process with either one two-mo...
Answers to some salient questions, which arise in quantum plasmas, are given. Starting from the Schr\"{o}dinger equation for a single particle it is demonstrated how the Wigner-Moyal equation can be d...
First of all, I would like to thank prof. Igor Jex for his kind supervision during the past
years.The first part of my thesis results from our longstanding and fruitful collaboration with
Dr. Tamas ...