We propose two schemes for generating the Knill–Lafamme–Milburn states of two distant polar molecule ensembles, respectively, in two transmission-line resonators (TLRs) connected by a superconducting charge qutrit (SCQ), and of two SCQs in a TLR, respectively. Both schemes are robust against photon decay due to the virtual excitations of the microwave photons of the TLRs, and the spontaneous emission can be suppressed owing to the virtual transitions of the SCQs in the second scheme. In addition, the schemes have high controllability and feasibility under the current available techniques.
© 2014 Optical Society of America
Original Manuscript: November 25, 2013
Revised Manuscript: January 15, 2014
Manuscript Accepted: January 27, 2014
Published: March 5, 2014
Qi-Gong Liu, Qi-Cheng Wu, and Xin Ji, "Preparation of Knill–Lafamme–Milburn states based on superconducting qutrits," J. Opt. Soc. Am. B 31, 672-677 (2014)