A controlled ac Stark echo for quantum memories
arXiv:1612.02193
Abstract
A quantum memory protocol of controlled ac Stark echoes (CASE) based on a double rephasing photon echo scheme via controlled Rabi flopping is proposed. A double rephasing scheme of photon echoes inherently satisfies the no-population inversion requirement for quantum memories, but the resultant absorptive echo has been a fundamental problem. In the present studies, firstly, the first echo in the double rephasing scheme is dynamically controlled not to affect the second echo by using unbalanced ac Stark shifts. Secondly, a control Rabi pulse coherently manipulates the second echo to be emissive via controlled coherence conversion. Owing to far-off resonance of ac Stark fields, the present protocol can be applied for wavelength-selective dynamic control of quantum memories in real time for erasing, buffering, and multiplexing.
arXiv comment12 pages, 6 figures
References in corpus (12)
- Broadband waveguide quantum memory for entangled photons
- A solid state light-matter interface at the single photon level
- Demonstration of atomic frequency comb memory for light with spin-wave storage
- Photon Echoes Produced by Switching Electric Fields
- Generation of entangled coherent states via cross phase modulation in a double electromagnetically induced transparency regime
- Nanophotonic coherent light-matter interfaces based on rare-earth-doped crystals
- Coherent Storage of Temporally Multimode Light Using a Spin-Wave Atomic Frequency Comb Memory
- Photon echo quantum memories in inhomogeneously broadened two level atoms
- Stark Echo Modulation for Quantum Memories
- Coherent control of collective atom phase for ultralong, inversion-free photon echoes
- Atom phase controlled noise-free photon echoes
- Collective atom phase controls in photon echoes for quantum memory applications I: Population inversion removal