Search results for "INDUCED CONTINUUM STRUCTURE"

showing 3 items of 3 documents

Controlling molecular alignment rephasing through interference of Raman-induced rotational coherence

2000

0021-9606; Quantum control over molecular alignment rephasing is experimentally investigated in gaseous CO2. The control process is achieved by illuminating the medium with a pair of pump-pulses separated in time by approximately an integer value of T0=1/8B(0), where B(0) is the rotational constant. Through a Raman-type process, each pulse alone produces rotational coherence leading to a periodic orientational anisotropy. It is the combination of the two pulses that yields to quantum interference, resulting in a modification of this anisotropy probed by a third delayed pulse. The effect is accurately analyzed for different time delays between the two pulses. A theoretical analysis supplies …

CONTROLGeneral Physics and AstronomyRotational transitionTRANSITIONS01 natural sciencesMolecular physicssymbols.namesakeOpticsINDUCED POLARIZATION SPECTROSCOPYTIME-RESOLVED DYNAMICSMULTIPHOTON IONIZATIONSYSTEMSElectric field0103 physical sciencesPhysical and Theoretical ChemistryMolecular alignmentFIELD010306 general physicsAnisotropyPhysicsQuantum optics010304 chemical physicsbusiness.industryWAVE-PACKETSPHOTODISSOCIATIONINDUCED CONTINUUM STRUCTUREsymbolsLASERRotational spectroscopyRaman spectroscopybusinessCoherence (physics)
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Journeys from quantum optics to quantum technology

2017

Sir Peter Knight is a pioneer in quantum optics which has now grown to an important branch of modern physics to study the foundations and applications of quantum physics. He is leading an effort to develop new technologies from quantum mechanics. In this collection of essays, we recall the time we were working with him as a postdoc or a PhD student and look at how the time with him has influenced our research.

EngineeringTechnologyAtomic and Molecular Physics and OpticEmerging technologiesQuantum technologiesTRAPPED IONQuantum physicsSINGLE-ATOM0205 Optical PhysicsPhysics - History and Philosophy of PhysicsNONCLASSICAL MOTIONAL STATESFOS: Physical sciences01 natural sciences010305 fluids & plasmasTheoretical physicsQC350Engineering0202 Atomic Molecular Nuclear Particle And Plasma Physics0103 physical sciencesPERIODIC LEVEL-CROSSINGSStatistical and Nonlinear Physics; Electronic Optical and Magnetic Materials; Atomic and Molecular Physics and Optics; Electrical and Electronic EngineeringHistory and Philosophy of Physics (physics.hist-ph)ULTRAFAST MOLECULAR-DYNAMICSElectrical and Electronic Engineering010306 general physicsQCQuantum opticsScience & Technologybusiness.industryElectronic Optical and Magnetic MaterialModern physics0906 Electrical And Electronic EngineeringINDUCED ELECTRON-DIFFRACTIONStatistical and Nonlinear PhysicsEngineering Electrical & ElectronicOpticsModern physicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsQuantum technologyQuantum theoryINDUCED CONTINUUM STRUCTUREHIGH-HARMONIC-GENERATIONENTANGLED COHERENT STATESQuantum Physics (quant-ph)businessBAND SQUEEZED VACUUMStatistical and Nonlinear Physic
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Quantum control of ground-state rotational coherence in a linear molecule

2000

We present an experimental and theoretical investigation of the quantum control of ground-state rotational coherence in a linear molecule. A sequence of two temporally separated laser pulses creates a rotational superposition state in ${\mathrm{CO}}_{2}$ whose evolution is monitored through a polarization technique. We study the influence of the phase difference between the two pulses. We show that the overlapping of the two wave packets, produced by each pulse, gives rise to quantum interference that affects the orientational anisotropy of the sample. Because of the large number of coherently excited levels, the interference produces well-separated temporal structures, whose magnitude can …

PhysicsQuantum opticsQuantum phase transitionWAVE-PACKETSTRANSITIONSAtomic and Molecular Physics and OpticsPULSESTIME-RESOLVED DYNAMICSQuantum error correctionExcited stateQuantum mechanicsPrincipal quantum numberINDUCED CONTINUUM STRUCTURECoherent statesIONIZATIONAtomic physicsLASER CONTROLGround stateCoherence (physics)
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