Efficient Quantum Photonic Phase Shift in a Low Q-Factor Regime

P. Androvitsaneas; A. B. Young; J. M. Lennon; C. Schneider; S. Maier; J. J. Hinchliff; G. S. Atkinson; E. Harbord; M. Kamp; S. Höfling; J. G. Rarity; R. Oulton

doi:10.1021/acsphotonics.8b01380

Efficient Quantum Photonic Phase Shift in a Low Q-Factor Regime

P. Androvitsaneas, A. B. Young, J. M. Lennon, C. Schneider, S. Maier, J. J. Hinchliff, G. S. Atkinson, E. Harbord, M. Kamp, S. Höfling, J. G. Rarity, R. Oulton

Research output: Contribution to journal › Article › Research › peer-review

22 Citations (Scopus)

Abstract

Solid-state quantum emitters have long been recognized as the ideal platform to realize integrated quantum photonic technologies. We demonstrate that a self-assembled negatively charged quantum dot (QD) in a low Q-factor photonic micropillar is a suitable design for deterministic polarization switching and spin-photon entanglement. We show this by measuring a shift in phase of an input single photon of at least 2π/3. As we explain in the text, this is strong experimental proof that input photons can interact with the emitter deterministically. A deterministic photon-emitter interaction is a viable and scalable means to achieve several vital functionalities such as single photon switches and entanglement gates. Our experimentally determined value is limited by mode mismatch between the input laser and the cavity, QD spectral fluctuations, and spin relaxation. When on-resonance we estimate that up to 80% of the collected photons couple into the cavity mode and have interacted with the QD and undergone a phase shift of π.

Original language	English
Pages (from-to)	429-435
Number of pages	7
Journal	ACS Photonics
Volume	6
Issue number	2
DOIs	https://doi.org/10.1021/acsphotonics.8b01380
Publication status	Published - 20 Feb 2019
Externally published	Yes

Keywords

cavity QED
micropillar cavity
quantum dot

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title = "Efficient Quantum Photonic Phase Shift in a Low Q-Factor Regime",

abstract = "Solid-state quantum emitters have long been recognized as the ideal platform to realize integrated quantum photonic technologies. We demonstrate that a self-assembled negatively charged quantum dot (QD) in a low Q-factor photonic micropillar is a suitable design for deterministic polarization switching and spin-photon entanglement. We show this by measuring a shift in phase of an input single photon of at least 2π/3. As we explain in the text, this is strong experimental proof that input photons can interact with the emitter deterministically. A deterministic photon-emitter interaction is a viable and scalable means to achieve several vital functionalities such as single photon switches and entanglement gates. Our experimentally determined value is limited by mode mismatch between the input laser and the cavity, QD spectral fluctuations, and spin relaxation. When on-resonance we estimate that up to 80% of the collected photons couple into the cavity mode and have interacted with the QD and undergone a phase shift of π.",

keywords = "cavity QED, micropillar cavity, quantum dot",

author = "P. Androvitsaneas and Young, {A. B.} and Lennon, {J. M.} and C. Schneider and S. Maier and Hinchliff, {J. J.} and Atkinson, {G. S.} and E. Harbord and M. Kamp and S. H{\"o}fling and Rarity, {J. G.} and R. Oulton",

note = "Funding Information: The authors would like to thank X. Ai and H. F. Hofmann for helpful discussions. This work was funded by the Future Emerging Technologies (FET)-Open FP7-284743 [Project Spin Photon Angular Momentum Transfer for Quantum Enabled Technologies (SPANGL4Q)] and the German Ministry of Education and Research (BMBF) and Engineering and Physical Sciences Research Council (EPSRC; EP/ M024156/1, EP/N003381/1, and EP/M024458/1). J.J.H. was supported by the Bristol Quantum Engineering Centre for Doctoral Training, EPSRC Grant EP/L015730/1. We acknowledge the GW4 network for funding of A.Y. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = feb,

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doi = "10.1021/acsphotonics.8b01380",

language = "English",

volume = "6",

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journal = "ACS Photonics",

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T1 - Efficient Quantum Photonic Phase Shift in a Low Q-Factor Regime

AU - Androvitsaneas, P.

AU - Young, A. B.

AU - Lennon, J. M.

AU - Schneider, C.

AU - Maier, S.

AU - Hinchliff, J. J.

AU - Atkinson, G. S.

AU - Harbord, E.

AU - Kamp, M.

AU - Höfling, S.

AU - Rarity, J. G.

AU - Oulton, R.

N1 - Funding Information: The authors would like to thank X. Ai and H. F. Hofmann for helpful discussions. This work was funded by the Future Emerging Technologies (FET)-Open FP7-284743 [Project Spin Photon Angular Momentum Transfer for Quantum Enabled Technologies (SPANGL4Q)] and the German Ministry of Education and Research (BMBF) and Engineering and Physical Sciences Research Council (EPSRC; EP/ M024156/1, EP/N003381/1, and EP/M024458/1). J.J.H. was supported by the Bristol Quantum Engineering Centre for Doctoral Training, EPSRC Grant EP/L015730/1. We acknowledge the GW4 network for funding of A.Y. Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/2/20

Y1 - 2019/2/20

N2 - Solid-state quantum emitters have long been recognized as the ideal platform to realize integrated quantum photonic technologies. We demonstrate that a self-assembled negatively charged quantum dot (QD) in a low Q-factor photonic micropillar is a suitable design for deterministic polarization switching and spin-photon entanglement. We show this by measuring a shift in phase of an input single photon of at least 2π/3. As we explain in the text, this is strong experimental proof that input photons can interact with the emitter deterministically. A deterministic photon-emitter interaction is a viable and scalable means to achieve several vital functionalities such as single photon switches and entanglement gates. Our experimentally determined value is limited by mode mismatch between the input laser and the cavity, QD spectral fluctuations, and spin relaxation. When on-resonance we estimate that up to 80% of the collected photons couple into the cavity mode and have interacted with the QD and undergone a phase shift of π.

AB - Solid-state quantum emitters have long been recognized as the ideal platform to realize integrated quantum photonic technologies. We demonstrate that a self-assembled negatively charged quantum dot (QD) in a low Q-factor photonic micropillar is a suitable design for deterministic polarization switching and spin-photon entanglement. We show this by measuring a shift in phase of an input single photon of at least 2π/3. As we explain in the text, this is strong experimental proof that input photons can interact with the emitter deterministically. A deterministic photon-emitter interaction is a viable and scalable means to achieve several vital functionalities such as single photon switches and entanglement gates. Our experimentally determined value is limited by mode mismatch between the input laser and the cavity, QD spectral fluctuations, and spin relaxation. When on-resonance we estimate that up to 80% of the collected photons couple into the cavity mode and have interacted with the QD and undergone a phase shift of π.

KW - cavity QED

KW - micropillar cavity

KW - quantum dot

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JO - ACS Photonics

JF - ACS Photonics

IS - 2

ER -

Efficient Quantum Photonic Phase Shift in a Low Q-Factor Regime

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Keywords

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