Browsing by Keywords "Quantum theory"
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(1996) 
Landau quantization of twodimensional heavy holes, energy spectrum of magnetoexcitons and Augerrecombination lines
(2013)The Landau quantization of the twodimensional (2D) heavy holes, its influence on the energy spectrum of 2D magnetoexcitons, as well as their optical orientation are studied. The Hamiltonian of the heavy holes is written ... 
Microcavity enhanced amorphous silicon photoluminescence
(IEEE, 1997)A microcavity enhancement of room temperature photoluminescence (PL) of a hydrogenated amorphous silicon (aSi:h) was performed. A quantum confinement model was developed to describe the occurrence of the PL in the bulk ... 
NearUV InGaN/GaNbased dualoperation quantum optoelectronic devices
(SPIE, 2007)We present a novel dualoperation InGaN/GaN based quantum optoelectronic device (QOD) that operates as a quantum electroabsorption modulator in reverse bias and as a light emitter in forward bias in the spectral range of ... 
Nonlocal, noncommutative picture in quantum mechanics and distinguished continuous canonical maps
(IOP Science, 2002)It is shown that continuous classical nonlinear canonical (Poisson) maps have a distinguished role in quantum mechanics. They act unitarily on the quantum phase space and generate hindependent quantum nonlinear canonical ... 
NonMarkovian dynamics in ultracold Rydberg aggregates
(Institute of Physics Publishing Ltd., 2016)We propose a setup of an open quantum system in which the environment can be tuned such that either Markovian or nonMarkovian system dynamics can be achieved. The implementation uses ultracold Rydberg atoms, relying on ... 
Nonadditivity of critical Casimir forces
(OSA, 2017)We provide the first experimental evidence of nonadditivity for critical Casimir forces: the force that two colloidal particles exert together on a third one differs from the sum of the forces they exert separately. 
Nonthermal Quantum Channels as a Thermodynamical Resource
(American Physical Society, 2015)Quantum thermodynamics can be understood as a resource theory, whereby thermal states are free and the only allowed operations are unitary transformations commuting with the total Hamiltonian of the system. Previous ... 
Nuclear spin squeezing via electric quadrupole interaction
(American Physical Society, 2016)Control over nuclearspin fluctuations is essential for processes that rely on preserving the quantum state of an embedded system. For this purpose, squeezing is a viable alternative, so far that has not been properly ... 
The offresonant aspects of decoherence and a critique of the twolevel approximation
(IOP Institute of Physics, 2006)Conditions in favour of a realistic multilevelled description of a decohering quantum system are examined. In this regard the first crucial observation is that the thermal effects, contrary to the conventional belief, play ... 
On the possibility of grafting conducting polymers into insulating ones
(Elsevier, 1996)The possibility of grafting between conducting polymers, like polypyrrole (PPy) and polyaniline (PAn), and insulating polymers, such as polybisphenol A carbonate (PC) and polyamide (PA), is studied via semiempirical methods ... 
Persistent currents in mesoscopic loops and networks
(TÜBİTAK, 2003)The paper describes persistent (also termed "permanent", or "nondecaying") currents in mesoscopic metallic and macromolecular rings, cylinders and networks. The current arises as a response of system to AharonovBohm flux ... 
Persistent perfect entanglement in atomic systems
(IOP, 2004)It is shown that the system of an even number of threelevel atoms in the Λ configuration in a cavity can evolve into a persistent maximum entangled state. The time of formation of such an entangled state is estimated. 
Photonic band gap via quantum coherence in vortex lattices of BoseEinstein condensates
(The American Physical Society, 2005)We investigate the optical response of an atomic BoseEinstein condensate with a vortex lattice. We find that it is possible for the vortex lattice to act as a photonic crystal and create photonic band gaps, by enhancing ... 
Quantum canonical transformations in starproduct formalism
(IOP, 2013)We study construction of the starproduct version of three basic quantum canonical transformations which are known as the generators of the full canonical algebra. By considering the fact that starproduct of cnumber ... 
Quantum Dynamics of LongRange Interacting Systems Using the PositiveP and GaugeP Representations
(American Physical Society, 2017)We provide the necessary framework for carrying out stochastic positiveP and gaugeP simulations of bosonic systems with longrange interactions. In these approaches, the quantum evolution is sampled by trajectories in ... 
Quantum information processing in solid states: A critique of twolevel approximation
(World Scientific Publishing Co., 2005)We examine the effect of multilevels on decoherence and dephasing properties of a quantum system consisting of a nonideal two level subspace, identified as the qubit and a finite set of higher energy levels above this ... 
Quantum mechanical simulation of charge transport in very small semiconductor structures
(IEEE, 1989)A quantum mechanical simulation method of charge transport in very small semiconductor devices, based on the numerical solution of the timedependent Schrödinger equation (coupled selfconsistently to the Poisson equation ... 
Quantum stereographic projection and the homographic oscillator
(American Physical Society, 1996)The quantum deformation created by the stenographic mapping from S2 to C is studied. It is shown that the resulting algebra is locally isomorphic to su(2) and is an unconventional deformation of which the undeformed limit ... 
Quantum transport through onedimensional aluminum wires
(American Vacuum Society, 2002)Quantum conductance in narrow channels has been well understood by using the twodimensional electron gas, a model system which has been realized in semiconductor heterojunctions. An essential property of this electron ...