Spinor Slow-Light and Dirac Particles with Variable Mass
نویسندگان
چکیده
منابع مشابه
Spinor slow-light and dirac particles with variable mass.
We consider the interaction of two weak probe fields of light with an atomic ensemble coherently driven by two pairs of standing wave laser fields in a tripod-type linkage scheme. The system is shown to exhibit a Dirac-like spectrum for light-matter quasiparticles with multiple dark states, termed spinor slow-light polaritons. They posses an "effective speed of light" given by the group velocit...
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Slow light based on the effect of electromagnetically induced transparency is of great interest due to its applications in low-light-level nonlinear optics and quantum information manipulation. The previous experiments all dealt with the single-component slow light. Here, we report the experimental demonstration of two-component or spinor slow light using a double-tripod atom-light coupling sch...
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Local decompositions of a Dirac spinor into ‘charged’ and ‘real’ pieces ψ(x) = M(x)χ(x) are considered. χ(x) is a Majorana spinor, andM(x) a suitable Dirac-algebra valued field. Specific examples of the decomposition in 2 + 1 dimensions are developed, along with kinematical implications, and constraints on the component fields within M(x) sufficient to encompass the correct degree of freedom co...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2010
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.105.173603