# Optical Entanglement of Distinguishable Quantum Emitters.

@article{Levonian2022OpticalEO, title={Optical Entanglement of Distinguishable Quantum Emitters.}, author={D. S. Levonian and Ralf Riedinger and B. Machielse and E. N. Knall and Mihir K. Bhaskar and Can Knaut and R. Bekenstein and Hongkun Park and Marko Lon{\vc}ar and Mikhail D. Lukin}, journal={Physical review letters}, year={2022}, volume={128 21}, pages={ 213602 } }

Solid-state quantum emitters are promising candidates for the realization of quantum networks, owing to their long-lived spin memories, high-fidelity local operations, and optical connectivity for long-range entanglement. However, due to differences in local environment, solid-state emitters typically feature a range of distinct transition frequencies, which makes it challenging to create optically mediated entanglement between arbitrary emitter pairs. We propose and demonstrate an efficient…

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## References

SHOWING 1-10 OF 44 REFERENCES

Quantum Interference of Electromechanically Stabilized Emitters in Nanophotonic Devices

- PhysicsPhysical Review X
- 2019

Photon-mediated coupling between distant matter qubits may enable secure communication over long distances, the implementation of distributed quantum computing schemes, and the exploration of new…

Cavity quantum electrodynamics with color centers in diamond

- Physics
- 2020

Coherent interfaces between optical photons and long-lived matter qubits form a key resource for a broad range of quantum technologies. Cavity quantum electrodynamics (cQED) offers a route to achieve…

Heralded entanglement between solid-state qubits separated by three metres

- PhysicsNature
- 2013

Long-distance entanglement of two electron spin qubits in diamond with a spatial separation of three metres is established using a robust protocol based on creation of spin–photonEntanglement at each location and a subsequent joint measurement of the photons.

Quantum Network Nodes Based on Diamond Qubits with an Efficient Nanophotonic Interface.

- PhysicsPhysical review letters
- 2019

It is shown that efficient SiV-cavity coupling (with cooperativity C>30) provides a nearly deterministic interface between photons and the electron spin memory, featuring coherence times exceeding 1 ms.

Room-temperature entanglement between single defect spins in diamond

- Physics
- 2013

Entanglement is the central yet fleeting phenomenon of quantum physics. Once being considered a peculiar counter-intuitive property of quantum theory1, it has developed into the most central element…

A Ten-Qubit Solid-State Spin Register with Quantum Memory up to One Minute

- PhysicsPhysical Review X
- 2019

Spins associated to single defects in solids provide promising qubits for quantum information processing and quantum networks. Recent experiments have demonstrated long coherence times, high-fidelity…

Efficient Entanglement of Spin Qubits Mediated by a Hot Mechanical Oscillator.

- PhysicsPhysical review letters
- 2021

It is found that high-fidelity entanglement at cryogenic and even ambient temperatures is feasible with realistic parameters and show that the entangled pair can be subsequently leveraged for deterministic controlled-NOT operations between nuclear spins.

Experimental demonstration of memory-enhanced quantum communication

- PhysicsNature
- 2020

A solid-state spin memory is used to demonstrate quantum repeater functionality, which has the potential to overcome photon losses involved in long-distance transmission of quantum information.

Nanophotonic quantum phase switch with a single atom

- PhysicsNature
- 2014

By strongly coupling a photon to a single atom trapped in the near field of a nanoscale photonic crystal cavity, this work realizes a system in which a single atoms switches the phase of a photon and a single photon modifies the atom’s phase.

Entanglement of two quantum memories via fibres over dozens of kilometres

- PhysicsNature
- 2020

The entanglement of two atomic-ensemble quantum memories via optical fibres, enabled by the use of cavity enhancement and quantum frequency conversion, is demonstrated over dozens of kilometres.