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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Published on: April 4, 2017

An integrated diamond nanophotonics platform for quantum-optical networks.

A Sipahigil¹, R E Evans¹, D D Sukachev^1,2,3

¹Department of Physics, Harvard University, Cambridge, MA 02138, USA.

Science (New York, N.Y.)

|October 15, 2016

Summary

Researchers developed a scalable quantum nanophotonics platform using silicon-vacancy (SiV) centers in diamond. This enables single-photon level optical switching and a tunable single-photon source, advancing quantum network technologies.

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Area of Science:

Quantum optics
Nanophotonics
Solid-state quantum information

Background:

Efficient photon-emitter interfaces are crucial for quantum networks.
Optical nonlinearities at the single-photon level are essential for quantum information processing.

Purpose of the Study:

To demonstrate an integrated, scalable quantum nanophotonics platform.
To realize a single-center-controlled quantum-optical switch.
To develop a tunable single-photon source using Raman transitions.

Main Methods:

Coupling silicon-vacancy (SiV) color centers to diamond nanodevices.
Integrating SiV centers into diamond photonic crystal cavities.
Utilizing SiV metastable states for optical switching.
Employing Raman transitions for photon generation in diamond waveguides.

Main Results:

Demonstrated a quantum-optical switch controlled by a single SiV color center.
Achieved optical switching at the single-photon level.
Realized a tunable frequency and bandwidth single-photon source.
Observed quantum interference from superradiant emission of entangled SiV centers.

Conclusions:

The demonstrated platform is scalable for quantum nanophotonics applications.
SiV centers in diamond provide a robust platform for quantum optical devices.
The study showcases advancements in single-photon sources and quantum control.