Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 53, Issue 7, Pages 1234-1238Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-010-4014-1
Keywords
Feshbach resonance; bound state; single-photon transistor
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Funding
- National Natural Science Foundation of China [10474104, 60433050, 10704023]
- National Basic Research Program of China [2006CB921205, 2005CB724508]
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Feshbach resonance is a resonance for two-atom scattering with two or more channels, in which a bound state is achieved in one channel. We show that this resonance phenomenon not only exists during the collisions of massive particles, but also emerges during the coherent transport of massless particles, that is, photons confined in the coupled resonator arrays linked by a separated cavity or a tunable two level system (TLS). When the TLS is coupled to one array to form a bound state in this setup, the vanishing transmission appears to display the photonic Feshbach resonance. This process can be realized through various experimentally feasible solid state systems, such as the couple defected cavities in photonic crystals and the superconducting qubit coupled to the transmission line. The numerical simulation based on the finite-different time-domain (FDTD) method confirms our assumption about the physical implementation.
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