Inducing disallowed two-atom transitions with temporally entangled photons
Date
2004-08-25Author
Muthukrishnan, Ashok
Agarwal, Girish S.
Scully, Marlan O.
Metadata
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Two uncoupled two-level atoms cannot be jointly excited by classical light under general circumstances, due to destructive interference of excitation pathways in two-photon absorption. However, with temporally entangled light, two-atom excitation is shown possible. Photons arising from three-level cascade decay are intrinsically ordered in time of emission. This field correlation induces a joint resonance in the two-atom excitation probability via suppression of one of the time-ordered excitation pathways. The relative gain in two-photon absorption increases with the time-frequency entanglement.
Citation
Muthukrishnan, A., Agarwal, G. S., & Scully, M. O. (2004). Inducing disallowed two-atom transitions with temporally entangled photons. Physical Review Letters, 93(9), Article 093002. https://doi.org/10.1103/PhysRevLett.93.093002