Demonstration of Atomic Frequency Comb Memory for Light with Spin-Wave Storage

We present a light-storage experiment in a praseodymium-doped crystal where the light is mapped onto an inhomogeneously broadened optical transition shaped into an atomic frequency comb. After absorption of the light, the optical excitation is converted into a spin-wave excitation by a control pulse. A second control pulse reads the memory (on-demand) by reconverting the spin-wave excitation to an optical one, where the comb structure causes a photon-echo-type rephasing of the dipole moments and directional retrieval of the light. This combination of photon-echo and spin-wave storage allows us to store submicrosecond (450 ns) pulses for up to 20 mu s. The scheme has a high potential for storing multiple temporal modes in the single-photon regime, which is an important resource for future long-distance quantum communication based on quantum repeaters.

Usmani, Imam (författare)
Amari, AtiaLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-ata (författare)
Lauritzen, Bjoern (författare)
Walther, AndreasLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-aw0 (författare)
Simon, Christoph (författare)
Sangouard, Nicolas (författare)
Minar, Jiri (författare)
de Riedmatten, Hugues (författare)
Gisin, Nicolas (författare)
Kröll, StefanLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-skr (författare)
AtomfysikFysiska institutionen (creator_code:org_t)

Av författaren/redakt...: Afzelius, Mikael; Usmani, Imam; Amari, Atia; Lauritzen, Bjoer ...; Walther, Andreas; Simon, Christoph; visa fler...; Sangouard, Nicol ...; Minar, Jiri; de Riedmatten, H ...; Gisin, Nicolas; Kröll, Stefan; visa färre...

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