Time-Reversal-Symmetric Single-Photon Wave Packets for Free-Space Quantum Communication

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.

arXiv comment5 pages, 5 figures

References in corpus (12)

• The Quantum Internet
• Quantum state transfer and entanglement distribution among distant nodes in a quantum network
• 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
• Perfect excitation of a matter qubit by a single photon in free space
• Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
• QED with a parabolic mirror
• Efficient saturation of an ion in free space
• Generation of entangled matter qubits in two opposing parabolic mirrors

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• Efficient single photon absorption by a trapped moving atom
• Optimization of STIRAP-based state transfer under dissipation
• Quantum interference control of perfect photon absorption in a three-level atom-cavity system
• Ultrafast Excitation Exchange in a Maxwell-Fish-Eye Lens