We have experimentally demonstrated that stored and retrieved light pulses have different frequencies but maintain phase coherence; a stored light pulse is released with a different polarization. However, the manipulation process causes an energy loss of the retrieved pulse. We have discovered that Clebsch–Gordan coefficients among the Zeeman sublevels play an important role in the energy loss and have demonstrated a solution for avoiding the energy loss.
© 2006 Optical Society of America
Original Manuscript: August 17, 2006
Revised Manuscript: September 19, 2006
Manuscript Accepted: September 21, 2006
Published: November 9, 2006
Yong-Fan Chen, Pei-Chen Kuan, Shih-Hao Wang, Chang-Yi Wang, and Ite A. Yu, "Manipulating the retrieved frequency and polarization of stored light pulses," Opt. Lett. 31, 3511-3513 (2006)