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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Deterministic Single-Phonon Source Triggered by a Single Photon.

Immo Söllner¹, Leonardo Midolo¹, Peter Lodahl¹

¹Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.

Physical Review Letters

|June 25, 2016

Summary

This summary is machine-generated.

We demonstrate a method for precisely creating single phonons using single photons. This quantum dot-based optomechanical circuit approach enables on-chip quantum information processing.

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Area of Science:

Quantum optics
Solid-state physics
Nanotechnology

Background:

Quantum dots are crucial for light-matter interactions.
Optomechanical circuits enable control over light and sound waves.
Gigahertz frequency phonons are important for quantum technologies.

Purpose of the Study:

To deterministically generate single phonons triggered by single photons.
To develop on-chip quantum functionalities using phonons.
To explore phonons as an on-chip quantum bus.

Main Methods:

Utilizing a quantum dot embedded in an optomechanical circuit.
Simultaneous control of photonic and phononic frequencies.
Designing novel optomechanical circuit elements.

Main Results:

Deterministic generation of single phonons at gigahertz frequencies.
Single-photon triggering of phonon generation.
Demonstration of on-chip optomechanical control.

Conclusions:

The proposed scheme is implementable with current nanofabrication techniques.
This work opens new avenues for on-chip quantum information processing.
Phonons can serve as a robust on-chip quantum bus.