Frequency-multiplexed storage and distribution of narrowband telecom photon pairs over a 10-km fiber link with long-term system stability
arXiv:2303.01677 · doi:10.1103/PhysRevApplied.19.024070
Abstract
The ability to transmit quantum states over long distances is a fundamental requirement of the quantum internet and is reliant upon quantum repeaters. Quantum repeaters involve entangled photon sources that emit and deliver photonic entangled states at high rates and quantum memories that can temporarily store quantum states. Improvement of the entanglement distribution rate is essential for quantum repeaters, and multiplexing is expected to be a breakthrough. However, limited studies exist on multiplexed photon sources and their coupling with a multiplexed quantum memory. Here, we demonstrate the storing of a frequency-multiplexed two-photon source at telecommunication wavelengths in a quantum memory accepting visible wavelengths via wavelength conversion after 10-km distribution. To achieve this, quantum systems are connected via wavelength conversion with a frequency stabilization system and a noise reduction system. The developed system was stably operated for more than 42 h. Therefore, it can be applied to quantum repeater systems comprising various physical systems requiring long-term system stability.
arXiv comment10 pages
References in corpus (31)
- Long-distance quantum communication with atomic ensembles and linear optics
- A quantum network of clocks
- Realization of a multi-node quantum network of remote solid-state qubits
- Multimode quantum memory based on atomic frequency combs
- Experimental demonstration of memory-enhanced quantum communication
- Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
- Longer-Baseline Telescopes Using Quantum Repeaters
- Entanglement of two quantum memories via fibers over dozens of kilometres
- Spectral multiplexing for scalable quantum photonics using an atomic frequency comb quantum memory and feed-forward control
- High-rate, high-fidelity entanglement of qubits across an elementary quantum network
- Telecom-heralded entanglement between remote multimode solid-state quantum memories
- Entangling single atoms over 33 km telecom fibre
- Heralded entanglement distribution between two absorptive quantum memories
- Advanced holeburning techniques for determination of hyperfine transition properties in inhomogeneously broadened solids applied to Pr3+:Y2SiO5
- Ultranarrow-Band Photon Pair Source Compatible with Solid State Quantum Memories and Telecommunication Networks
- Photon-Mediated Quantum Gate between Two Trapped Neutral Atoms in an Optical Cavity
- Quantum Storage of Frequency-Multiplexed Heralded Single Photons
- Space-borne quantum memories for global quantum communication
- Entanglement over global distances via quantum repeaters with satellite links
- Design and Analysis of Communication Protocols for Quantum Repeater Networks
- A Quantum Repeater Node Demonstrating Unconditionally Secure Key Distribution
- Long-distance single photon transmission from a trapped ion via quantum frequency conversion
- Quantum repeaters in space
- An integrated processor for photonic quantum states using a broadband light-matter interface
- Cross-phase modulation of a probe stored in a waveguide for non-destructive detection of photonic qubits
- Spectral noise in quantum frequency down-conversion from the visible to the telecommunication C-band
- Two-photon comb with wavelength conversion and 20-km distribution for quantum communication
- Coupling of a quantum memory and telecommunication wavelength photons for high-rate entanglement distribution in quantum repeaters
- Two-step frequency conversion for connecting distant quantum memories by transmission through an optical fiber
- Entanglement distribution between quantum repeater nodes with an absorptive type memory
- Single-shot high-resolution identification of discrete frequency modes of single-photon-level optical pulses