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Superconducting Qubits Photonic Quantum Computing

Antibunched photons emitted by a dc biased Josephson junction

arXiv
Authors: C. Rolland, A. Peugeot, S. Dambach, M. Westig, B. Kubala, Y. Mukharsky, C. Altimiras, H. le Sueur, P. Joyez, D. Vion, P. Roche, D. Esteve, J. Ankerhold, F. Portier

Year

2018

Paper ID

24036

Status

Preprint

Abstract Read

~2 min

Abstract Words

102

Citations

N/A

Abstract

We show experimentally that a dc biased Josephson junction in series with a high-enough impedance microwave resonator emits antibunched photons. Our resonator is made of a simple micro-fabricated spiral coil that resonates at 4.4 GHz and reaches a 1.97 kΩ characteristic impedance. The second order correlation function of the power leaking out of the resonator drops down to 0.3 at zero delay, which demonstrates the antibunching of the photons emitted by the circuit at a rate of 6 107 photons per second. Results are found in quantitative agreement with our theoretical predictions. This simple scheme could offer an efficient and bright single-photon source in the microwave domain.

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  • We show experimentally that a dc biased Josephson junction in series with a high-enough impedance microwave resonator emits antibunched photons.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1810.06217 [2] arXiv https://arxiv.org/abs/1810.06217 [3] Publisher https://arxiv.org/abs/1810.06217

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