Experimental storage of photonic polarization entanglement in a broadband loop-based quantum memory
arXiv:2306.09986 · doi:10.1103/PhysRevA.108.L050601
Abstract
We describe an experiment in which one member of a polarization-entangled photon pair is stored in an active "loop and switch" type quantum memory device, while the other propagates through a passive optical delay line. A comparison of Bell's inequality tests performed before and after the storage is used to investigate the ability of the memory to maintain entanglement, and demonstrate a rudimentary entanglement distribution protocol. The entangled photons are produced by a conventional Spontaneous Parametric Down Conversion source with center wavelengths at 780 nm and bandwidths of 10 THz, while the memory has an even wider operational bandwidth that is enabled by the weakly dispersive nature of the Pockels effect used for polarization-insensitive switching in the loop-based quantum memory platform.
arXiv comment6 pages, 4 figures
References in corpus (32)
- Broadband waveguide quantum memory for entangled photons
- Mapping photonic entanglement into and out of a quantum memory
- Quantum Storage of Photonic Entanglement in a Crystal
- Experimental demonstration of a heralded entanglement source
- Robust long-distance entanglement and a loophole-free Bell test with ions and photons
- Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory
- Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre
- Single Photons on Pseudo-Demand from Stored Parametric Down-Conversion
- Heralded entanglement distribution between two absorptive quantum memories
- Heralded generation of entangled photon pairs
- A Time-Multiplexed Heralded Single-Photon Source
- Heralded quantum entanglement between two crystals
- Quantum Storage of Three-Dimensional Orbital-Angular-Momentum Entanglement in a Crystal
- Long-distance Bell-type tests using energy-time entangled photons
- Sequential generation of linear cluster states from a single photon emitter
- A telecom-wavelength quantum repeater node based on a trapped-ion processor
- Quantum-memory-assisted multi-photon generation for efficient quantum information processing
- Cyclical Quantum Memory for Photonic Qubits
- Design and Analysis of Communication Protocols for Quantum Repeater Networks
- Efficient reversible entanglement transfer between light and quantum memories
- Synchronization of optical photons for quantum information processing
- Conditional preparation of maximal polarization entanglement
- On-demand photonic entanglement synthesizer
- Scalable generation of multi-photon entangled states by active feed-forward and multiplexing
- Quantum storage of single-photon and two-photon Fock states with an all-optical quantum memory
- A Hybrid Quantum Memory Enabled Network at Room Temperature
- Storage and retrieval of nonclassical photon pairs and conditional single photons generated by parametric down-conversion process
- Entanglement and non-locality between disparate solid-state quantum memories mediated by photons
- Heralded Two-Photon Entanglement from Probabilistic Quantum Logic Operations on Multiple Parametric Down-Conversion Sources
- Storage of polarization-entangled THz-bandwidth photons in a diamond quantum memory
- Polarization-independent single-photon switch based on a fiber-optical Sagnac interferometer for quantum communication networks
- Amplification of cascaded downconversion by reusing photons with a switchable cavity
Cited by in corpus (5)
- Fiber Loop Quantum Buffer for Photonic Qubits
- Secure authentication via Quantum Physical Unclonable Functions: a review
- Fiber-coupled broadband quantum memory for polarization-encoded photonic qubits
- Highly Efficient and Broadband Optical Delay Line towards a Quantum Memory
- Non-Markovian Dynamics in Fiber Delay-line Buffers