Large Kerr nonlinearities on cavity-atom polaritons

Abstract

I analyze a scheme that is capable of producing large Kerr nonlinearities on cavity-atom polaritons in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A weak control laser coupled to the atoms from free space induces destructive quantum interference in the polariton excitation of the coupled cavity-atom system and creates large Kerr nonlinearities on the intra-cavity light field. The scheme can be used for optical switching or cross-phase modulation of the cavity-atom polariton at ultra-low light levels, which may be useful for applications in quantum state manipulation in cavity QED, quantum measurements, and quantum logic gates.

17 pages, 5 figures

References in corpus (5)

• Observation of the Vacuum-Rabi Spectrum for One Trapped Atom
• Magneto-optical rotation and cross-phase modulation via coherently driven tripod atoms
• Large Cross-Phase Modulation between Slow Co-propagating Weak Pulses in Rb
• Vacuum Rabi splitting and intracavity dark state in a cavity-atoms system
• Trapping and observing single atoms in the dark

Cited by in corpus (8)

• Large Cross-Phase Modulations at the Few-Photon Level
• Electromagnetic control of nonclassicality in cavity QED system
• Interaction-free all-optical switching at low light Intensities in a multi-atom cavity QED system
• Observation of dressed intra-cavity dark states
• Ancilla-driven quantum computation for qudits and continuous variables
• High-performance Kerr quantum battery
• Quantum computation mediated by ancillary qudits and spin coherent states
• Low error measurement-free phase gates for qubus computation