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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 10 — Oct. 1, 2009
  • pp: 886–890

Tunneling-induced π-phase shift with a single-photon signal field in asymmetric double quantum wells

Hongju Guo, Lichun Wang, Yueping Niu, Shiqi Jin, and Shangqing Gong  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 10, pp. 886-890 (2009)


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Abstract

A theoretical investigation is carried out into the cross phase modulation (XPM) in an asymmetric double AlGaAs/GaAs quantum wells structure with a common continuum. It is found that, combining resonant tunneling-induced transparency and constructive interference in the third-order Kerr effect, a giant XPM can be achieved with vanishing linear and nonlinear absorptions, accompanied by the velocities of the probe and signal fields being matched. Furthermore, this giant XPM could induce a \pi-phase shift at a single-photon level which is favorable for the applications in two-qubit quantum logic gates.

© 2009 Chinese Optics Letters

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(190.4400) Nonlinear optics : Nonlinear optics, materials
(270.1670) Quantum optics : Coherent optical effects
(270.5585) Quantum optics : Quantum information and processing

Citation
Hongju Guo, Lichun Wang, Yueping Niu, Shiqi Jin, and Shangqing Gong, "Tunneling-induced π-phase shift with a single-photon signal field in asymmetric double quantum wells," Chin. Opt. Lett. 7, 886-890 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-10-886

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