Related papers: Scalable Multipartite Entanglement of Remote Rare-earth Ion Qubits

Scalable Multipartite Entanglement of Remote Rare-earth Ion Qubits

URL: http://arxiv.org/abs/2402.16224v1
Date: Sun, 25 Feb 2024 23:55:29 GMT
Title: Scalable Multipartite Entanglement of Remote Rare-earth Ion Qubits
Authors: Andrei Ruskuc, Chun-Ju Wu, Emanuel Green, Sophie L. N. Hermans, Joonhee Choi, Andrei Faraon
Abstract summary: Single photon emitters with internal spin are leading contenders for developing quantum repeater networks. We introduce a scalable approach to quantum networking that utilizes frequency erasing photon detection and real-time quantum control. Our results provide a practical route to overcoming universal limitations imposed by non-uniformity and instability in solid-state emitters.
Score: 3.9514210525254785
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Single photon emitters with internal spin are leading contenders for developing quantum repeater networks, enabling long-range entanglement distribution for transformational technologies in communications and sensing. However, scaling beyond current few-node networks will require radical improvements to quantum link efficiencies and fidelities. Solid-state emitters are particularly promising due to their crystalline environment, enabling nanophotonic integration and providing spins for memory and processing. However, inherent spatial and temporal variations in host crystals give rise to static shifts and dynamic fluctuations in optical transition frequencies, posing formidable challenges in establishing large-scale, multipartite entanglement. Here, we introduce a scalable approach to quantum networking that utilizes frequency erasing photon detection in conjunction with adaptive, real-time quantum control. This enables frequency multiplexed entanglement distribution that is also insensitive to deleterious optical frequency fluctuations. Single rare-earth ions are an ideal platform for implementing this protocol due to their long spin coherence, narrow optical inhomogeneous distributions, and long photon lifetimes. Using two 171Yb:YVO4 ions in remote nanophotonic cavities we herald bipartite entanglement and probabilistically teleport quantum states. Then, we extend this protocol to include a third ion and prepare a tripartite W state: a useful input for advanced quantum networking applications. Our results provide a practical route to overcoming universal limitations imposed by non-uniformity and instability in solid-state emitters, whilst also showcasing single rare-earth ions as a scalable platform for the future quantum internet.

Related papers

Rephasing spectral diffusion in time-bin spin-spin entanglement protocols [0.0]
We introduce a method to correct phase errors from quasi-static frequency fluctuations after the entangled state is generated. For quasi-static frequency fluctuations, the fidelity is determined only by the lifetime of the excited state used for shelving. The protocol can be used to generate high-fidelity entangled spin pairs without reducing the rate of entanglement generation.
arXiv Detail & Related papers (2024-06-10T17:33:27Z)
Dual epitaxial telecom spin-photon interfaces with correlated long-lived coherence [0.0]
Trivalent erbium dopants emerge as a compelling candidate with their telecom C band emission and shielded 4f intra-shell spin-optical transitions. We demonstrate dual erbium telecom spin-photon interfaces in an epitaxial thin-film platform via wafer-scale bottom-up synthesis.
arXiv Detail & Related papers (2023-10-11T01:40:04Z)
Frequency tunable, cavity-enhanced single erbium quantum emitter in the telecom band [9.184620121974449]
Single quantum emitters embedded in solid-state hosts are an ideal platform for realizing quantum information processors and quantum network nodes. Here we demonstrate for the first time linear Stark tuning of the emission frequency of a single Er$3+$ ion.
arXiv Detail & Related papers (2023-04-28T08:24:48Z)
Simulation of Entanglement Generation between Absorptive Quantum Memories [56.24769206561207]
We use the open-source Simulator of QUantum Network Communication (SeQUeNCe), developed by our team, to simulate entanglement generation between two atomic frequency comb (AFC) absorptive quantum memories. We realize the representation of photonic quantum states within truncated Fock spaces in SeQUeNCe. We observe varying fidelity with SPDC source mean photon number, and varying entanglement generation rate with both mean photon number and memory mode number.
arXiv Detail & Related papers (2022-12-17T05:51:17Z)
Quantum-limited millimeter wave to optical transduction [50.663540427505616]
Long distance transmission of quantum information is a central ingredient of distributed quantum information processors. Current approaches to transduction employ solid state links between electrical and optical domains. We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
arXiv Detail & Related papers (2022-07-20T18:04:26Z)
Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
arXiv Detail & Related papers (2022-03-28T19:37:08Z)
Optical Entanglement of Distinguishable Quantum Emitters [0.0]
We propose and demonstrate an efficient method for entangling emitters with optical transitions separated by many linewidths. In our approach, electro-optic modulators enable a single photon to herald a parity measurement on a pair of spin qubits. Working with distinguishable emitters allows for individual qubit addressing and readout, enabling parallel control and entanglement of both co-located and spatially separated emitters.
arXiv Detail & Related papers (2021-08-24T19:37:08Z)
Telecom-heralded entanglement between remote multimode solid-state quantum memories [55.41644538483948]
Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation. Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories. We also show that the generated entanglement is robust against loss in the heralding path, and demonstrate temporally multiplexed operation, with 62 temporal modes.
arXiv Detail & Related papers (2021-01-13T14:31:54Z)
Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
arXiv Detail & Related papers (2020-12-21T17:22:25Z)
Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics [50.591267188664666]
Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
arXiv Detail & Related papers (2020-10-14T14:33:34Z)

This list is automatically generated from the titles and abstracts of the papers in this site.