Search results for "quantum information theory"

showing 2 items of 12 documents

Rising time of entanglement between scattering spins,

2009

We investigate the time evolution of entanglement in a process where a mobile particle is scattered by static spins. We show that entanglement increases monotonically during a transient and then saturates to a steady-state value. For a quasi-monochromatic mobile particle, the transient time depends only on the group-velocity and width of the incoming wavepacket and is insensitive to the interaction strength and spin-number of the scattering particles. These features do not depend on the interaction model and can be seen in various physical settings.

PhysicsQuantum Physicsquantum information theory transport in mesoscopic structuresSpinsCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsScatteringWave packetTime evolutionFOS: Physical sciencesQuantum entanglementCondensed Matter PhysicsSpin quantum numberElectronic Optical and Magnetic MaterialsQuantum mechanicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)ParticleGroup velocityQuantum Physics (quant-ph)
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A geometric analysis of the effects of noise on Berry phase

2007

In this work we describe the effect of classical and quantum noise on the Berry phase. It is not a topical review article but rather an overview of our work in this field aiming at giving a simple pictorial intuition of our results.

PhysicsWork (thermodynamics)Physics and Astronomy (miscellaneous)Geometric analysisField (physics)General MathematicsQuantum noiseQUANTUM COMPUTATIONNoiseGeometric phaseSYSTEMSSimple (abstract algebra)Quantum error correctionQuantum mechanicsgeometric phases open quantum systems quantum information theoryStatistical physics
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