Manipulating quantum entanglement of quasiparticles in many-electron systems by attosecond x-ray pulses

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.062334· OSTI ID:21437864

Mukamel, Shaul; Wang, Haitao ^[1]

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1. Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025 (United States)

Photoexcited electrons and holes in molecules or in semiconductors constitute a bipartite entangled system. We show that this entanglement can be coherently controlled by broadband x-ray pulses which create valence excitation wave packets through a stimulated Raman process. A novel measure of electron correlations in excited states is then provided by the time dependence of the concurrence. In a simulation study we demonstrate the control of entanglement of electrons and holes in CO that can be achieved by tuning a soft x-ray pulse to different core transitions: the carbon K edge (296 eV), the oxygen K edge (540 eV), and the 2{sigma}{yields}1{pi}{sup *} transition (191 eV).

• OSTI ID: 21437864
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPUTERIZED SIMULATION
CORRELATIONS
ELECTROMAGNETIC RADIATION
ELECTRON CORRELATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXCITED STATES
FERMIONS
HOLES
IONIZING RADIATIONS
LEPTONS
MATERIALS
MOLECULES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PULSES
QUANTUM ENTANGLEMENT
QUASI PARTICLES
RADIATIONS
SEMICONDUCTOR MATERIALS
SIMULATION
SOFT X RADIATION
TIME DEPENDENCE
VALENCE
WAVE PACKETS
X RADIATION