Time-Reversal-Symmetric Single-Photon Wave Packets for Free-Space Quantum Communication
arXiv:1503.05328 · doi:10.1103/PhysRevLett.114.173601
Abstract
Readout and retrieval processes are proposed for efficient, high-fidelity quantum state transfer between a matter qubit, encoded in the level structure of a single atom or ion, and a photonic qubit, encoded in a time-reversal-symmetric single-photon wave packet. They are based on controlling spontaneous photon emission and absorption of a matter qubit on demand in free space by stimulated Raman adiabatic passage. As these processes do not involve mode selection by high-finesse cavities or photon transport through optical fibers, they offer interesting perspectives as basic building blocks for free-space quantum-communication protocols.
5 pages, 5 figures
References in corpus (8)
- The Quantum Internet
- Free-Space distribution of entanglement and single photons over 144 km
- An Elementary Quantum Network of Single Atoms in Optical Cavities
- Quantum computing with alkaline earth atoms
- Strong interaction between light and a single trapped atom without a cavity
- Electro-Optic Modulation of Single Photons
- Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
- Generation of entangled matter qubits in two opposing parabolic mirrors