Neutral atom wavelength compatible 780 nm single photons from a trapped ion via quantum frequency conversion

Abstract

Quantum networks consisting of quantum memories and photonic interconnects can be used for entanglement distribution (L.-M.Duan and H. J. Kimble, PRL 90, 253601 (2003), H. J. Kimble, Nat. 453, 1023 EP (2008)), quantum teleportation (S.Pirandola et.al, Nat. Photon. 9, 641 (2015)), and distributed quantum computing (T.Spiller, et.al., New J. Phys. 8, 30 (2006). Remotely connected two-node networks have been demonstrated using memories of the same type: trapped ion systems (D.Hucul, et.al, Nat. Phys. 11, 37 (2014)), quantum dots (W. B. Gao et. al, Nat. Photon. 9, 363 (2015)), and nitrogen vacancy centers (W. B. Gao et. al, Nat. Photon. 9, 363 (2015), B. Hensen, et. al., Nat. 526, 682 (2015)). Hybrid systems constrained by the need to use photons with the native emission wavelength of the memory, have been demonstrated between a trapped ion and quantum dot (H.Meyer et.al PRL 114, 123001 (2015)) and between a single neutral atom and a Bose-Einstein Condensate (M.Lettner et. al, PRL 106, 210503 (2011)). Most quantum systems operate at disparate and incompatible wavelengths to each other so such two-node systems have never been demonstrated. Here, we use a trapped 138Ba${}^{+}$ ion and a periodically poled lithium niobate (PPLN) waveguide, with a fiber coupled output, to demonstrate 19% end-to-end efficient quantum frequency conversion (QFC) of single photons from 493 nm to 780 nm. At the optimal signal-to-noise operational parameter, we use fluorescence of the ion to produce light resonant with the ${}^{87}$Rb $D_2$ transition. To demonstrate the quantum nature of both the unconverted 493 nm photons and the converted photons near 780 nm, we observe strong quantum statics in their respective second order intensity correlations. This work extends the range of intra-lab networking between ions and networking and communication between disparate quantum memories. A

5 page and 4 figures

References in corpus (17)

• The Quantum Internet
• Experimental Comparison of Two Quantum Computing Architectures
• A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
• Modular Entanglement of Atomic Qubits using both Photons and Phonons
• High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion
• Assessing the progress of trapped-ion processors towards fault-tolerant quantum computation
• Photonic quantum state transfer between a cold atomic gas and a crystal
• Two-photon interference using background-free quantum frequency conversion of single photons from a semiconductor quantum dot
• Remote Entanglement between a Single Atom and a Bose-Einstein Condensate
• Long-distance single photon transmission from a trapped ion via quantum frequency conversion
• Direct photonic coupling of a semiconductor quantum dot and a trapped ion
• Pure single photons from a trapped atom source
• Spectroscopy of a synthetic trapped ion qubit
• Coherence and Entanglement Preservation of Frequency-Converted Heralded Single Photons
• Ion trap architectures and new directions
• Ion-photon entanglement and quantum frequency conversion with trapped Ba${}^{+}$ ions
• Single Ion Imaging and Fluorescence Collection with a Parabolic Mirror Trap

Cited by in corpus (14)

• Light-matter entanglement over 50 km of optical fibre
• Optimising repeater schemes for the quantum internet
• Quantum interference between photons from an atomic ensemble and a remote atomic ion
• Multiplexed quantum repeaters based on dual-species trapped-ion systems
• Spectral noise in quantum frequency down-conversion from the visible to the telecommunication C-band
• C-band single photons from a trapped ion via two-stage frequency conversion
• Demonstration of Slow Light in a Rubidium Vapour Using Single Photons from a Trapped Ion
• Entanglement between a trapped ion qubit and a 780-nm photon via quantum frequency conversion
• Improving entanglement generation rates in trapped ion quantum networks using nondestructive photon measurement and storage
• Photon-mediated entanglement scheme between a ZnO semiconductor defect and a trapped Yb ion
• Group-velocity symmetry in photonic crystal fibre for ultra-tunable quantum frequency conversion
• Scalable low-latency entanglement distribution for distributed quantum computing
• Efficient Quantum Frequency Conversion of Ultra-Violet Single Photons from a Trapped Ytterbium Ion
• Target-wavelength-trimmed second harmonic generation with gallium phosphide-on-nitride ring resonators