Coherent population trapping in {sup 87}Rb atoms induced by the optical frequency comb excitation

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.055402· OSTI ID:21528771

Aumiler, D ^[1]

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1. Institute of Physics, Bijenicka cesta 46, Zagreb, HR-10001 (Croatia)

The excitation of room-temperature four-level {sup 87}Rb atoms by a train of ultrashort pulses is investigated theoretically in the conditions when the pulse repetition period is shorter than the characteristic atomic relaxation times. It is shown that coherent accumulation of excitation leads to coherent population trapping and electromagnetically induced transparency of the excitation pulses when the pulse repetition rate is a subharmonic of the ground-state hyperfine splitting. It is illustrated how the judicious choice for the frequency comb parameters can provide a means to effectively control the degree of coherence between the ground-state hyperfine levels for selective atomic groups, and even transfer the whole atomic distribution to the dark state with up to 95% efficiency.

• OSTI ID: 21528771
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONTROL
EFFICIENCY
ENERGY-LEVEL TRANSITIONS
EXCITATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PULSES
RADIOISOTOPES
RELAXATION
RUBIDIUM 87
RUBIDIUM ISOTOPES
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TRAPPING
YEARS LIVING RADIOISOTOPES