High-purity single-photon generation based on cavity QED

Abstract

We propose a scheme for generating a high-purity single photon on the basis of cavity quantum electrodynamics (QED). This scheme employs a four-level system including two excited states, two ground states, and two driving lasers; this structure allows the suppression of the re-excitation process due to the atomic decay, which is known to significantly degrade the single-photon purity in state-of-the-art photon sources using a three-level system. Our analysis shows that the re-excitation probability arbitrarily approaches zero without sacrificing the photon generation probability when increasing the power of the driving laser between the excited states. This advantage is achievable by using current cavity-QED technologies. Our scheme can contribute to developing distributed quantum computation or quantum communication with high accuracy.

Main text: 5 pages, 2 figures, Appendix: 10 pages

References in corpus (11)

• The Quantum Internet
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Photon storage in Lambda-type optically dense atomic media. I. Cavity model
• Collective generation of quantum states of light by entangled atoms
• Quantum networks with neutral atom processing nodes
• Deterministic Shaping and Reshaping of Single-Photon Temporal Wave Functions
• Determination of the 5d6s 3D1 state lifetime and blackbody radiation clock shift in Yb
• Heralded quantum gates with integrated error detection in optical cavities
• Analyzing the Rydberg-based omg architecture for ${}^{171}$Yb nuclear spins
• Robust and fast microwave-driven quantum logic for trapped-ion qubits
• Efficient High-Fidelity Flying Qubit Shaping

Cited by in corpus (5)

• Taming Recoil Effect in Cavity-Assisted Quantum Interconnects
• Mitigation of birefringence in cavity-based quantum networks using frequency-encoded photons
• Engineering propagating cat states with driving-assisted cavity QED
• Single-shot conditional displacement gate between a trapped atom and traveling light
• Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering