Enhancing the capacity and performance of collective atomic quantum memory
arXiv:quant-ph/0502135 · doi:10.1103/PhysRevLett.95.053602
Abstract
Present schemes involving the quantum non-demolition interaction between atomic samples and off-resonant light pulses allow us to store quantum information corresponding to a single harmonic oscillator (mode) in one multiatomic system. We discuss the possibility to involve several coherences of each atom so that the atomic sample can store information contained in several quantum modes. This is achieved by the coupling of different magnetic sublevels of the relevant hyperfine level by additional Raman pulses. This technique allows us to design not only the quantum non-demolition coupling, but also beam splitterlike and two-mode squeezerlike interactions between light and collective atomic spin.
4 pages, 3 figures; minor changes in text and figs, more discussion on quantum information processing. To appear in Phys. Rev. Lett
References in corpus (18)
- Long-distance quantum communication with atomic ensembles and linear optics
- Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas
- Experimental long-lived entanglement of two macroscopic objects
- Experimental demonstration of quantum memory for light
- Generation of Nonclassical Photon Pairs for Scalable Quantum Communication with Atomic Ensembles
- Quantum State Transfer Between Matter and Light
- Quantum communication between atomic ensembles using coherent light
- Atomic Quantum State Teleportation and Swapping
- Enhancement of Kerr nonlinearity via multi-photon coherence
- Light-Matter Quantum Interface
- Selective addressing of high-rank atomic polarization moments
- Characterizing the spin state of an atomic ensemble using the magneto-optical resonance method
- Nonlinear Magneto-Optical Rotation of Elliptically Polarized Light
- Non-symmetric entanglement of atomic ensembles
- Generation of Superposition Spin States in an Atomic Ensemble
- Quantum cloning at the light-atoms interface: copying a coherent light state into two atomic quantum memories
- Unitary Gate Synthesis for Continuous Variable Systems
- Entanglement of two atomic samples by quantum non-demolition measurements
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- Noise excess free record/upload of non-classical states to continuous-variable quantum memory
- Continuous variable versus EIT-based quantum memories
- Analysis of photon-atom entanglement generated by Faraday rotation in a cavity
- Single-cell atomic quantum memory for light
- Deterministic atom-light quantum interface