Year: 2022
Type: article
Abstract: We report the experimental generation of all four frequency-bin Bell states in a single versatile setup via successive pumping of spontaneous parametric down-conversion with single and dual spectral lines. Our scheme utilizes intensity modulation to control the pump configuration and offers turn-key generation of any desired Bell state using only off-the-shelf telecommunication equipment. We employ Bayesian inference to reconstruct the density matrices of the generated Bell states, finding fidelities ≥97% for all cases. Additionally, we demonstrate the sensitivity of the frequency-bin Bell states to common-mode and differential-mode temporal delays traversed by the photons comprising the state-presenting the potential for either enhanced resolution or nonlocal sensing enabled by our complete Bell basis synthesizer.
Source: Physical Review Letters
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Awards: G121915436, G1645119126, G166562317, G203625172, G2411683797, G2988778103, G4370606643, G4423657506, G5726405315, G675320460, G6909283190, G7064979967, G7339441019, RAISE:TAQS: High Dimensional Frequency Bin Entanglement -- Photonic Integration and Algorithms, G8269158468, G8906985441, High-dimensional Frequency Gates in Integrated Photonics for Scalable Quantum Interconnects
OpenAlex ID: W4310748269