A solid-state single-photon filter

Lorenzo De Santis; Carlos Antón; Bogdan Reznychenko; Niccolo Somaschi; Guillaume Coppola; Jean Senellart; Carmen Gómez; Aristide Lemaître; Isabelle Sagnes; Andrew G. White; Loïc Lanco; Alexia Auffèves; Pascale Senellart

doi:10.1038/nnano.2017.85

A solid-state single-photon filter

Lorenzo De Santis
, Carlos Antón
, Bogdan Reznychenko
, Niccolo Somaschi
, Guillaume Coppola
, Jean Senellart
, Carmen Gómez
, Aristide Lemaître
, Isabelle Sagnes
, Andrew G. White
, Loïc Lanco
, Alexia Auffèves
, Pascale Senellart

École Polytechnique

Centre national de la recherche scientifique
Institut NÉEL
LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
Systran-SA
University of Queensland
Laboratoire de Probabilités et Modèles Aléatoires

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

Abstract

A strong limitation of linear optical quantum computing is the probabilistic operation of two-quantum-bit gates based on the coalescence of indistinguishable photons. A route to deterministic operation is to exploit the single-photon nonlinearity of an atomic transition. Through engineering of the atom-photon interaction, phase shifters, photon filters and photon-photon gates have been demonstrated with natural atoms. Proofs of concept have been reported with semiconductor quantum dots, yet limited by inefficient atom-photon interfaces and dephasing. Here, we report a highly efficient single-photon filter based on a large optical nonlinearity at the single-photon level, in a near-optimal quantum-dot cavity interface. When probed with coherent light wavepackets, the device shows a record nonlinearity threshold around 0.3 ± 0.1 incident photons. We demonstrate that 80% of the directly reflected light intensity consists of a single-photon Fock state and that the two- and three-photon components are strongly suppressed compared with the single-photon one.

Original language	English
Pages (from-to)	663-667
Number of pages	5
Journal	Nature Nanotechnology
Volume	12
Issue number	7
DOIs	https://doi.org/10.1038/nnano.2017.85
Publication status	Published - 1 Jul 2017

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10.1038/nnano.2017.85

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title = "A solid-state single-photon filter",

abstract = "A strong limitation of linear optical quantum computing is the probabilistic operation of two-quantum-bit gates based on the coalescence of indistinguishable photons. A route to deterministic operation is to exploit the single-photon nonlinearity of an atomic transition. Through engineering of the atom-photon interaction, phase shifters, photon filters and photon-photon gates have been demonstrated with natural atoms. Proofs of concept have been reported with semiconductor quantum dots, yet limited by inefficient atom-photon interfaces and dephasing. Here, we report a highly efficient single-photon filter based on a large optical nonlinearity at the single-photon level, in a near-optimal quantum-dot cavity interface. When probed with coherent light wavepackets, the device shows a record nonlinearity threshold around 0.3 ± 0.1 incident photons. We demonstrate that 80\% of the directly reflected light intensity consists of a single-photon Fock state and that the two- and three-photon components are strongly suppressed compared with the single-photon one.",

author = "\{De Santis\}, Lorenzo and Carlos Ant{\'o}n and Bogdan Reznychenko and Niccolo Somaschi and Guillaume Coppola and Jean Senellart and Carmen G{\'o}mez and Aristide Lema{\^i}tre and Isabelle Sagnes and White, \{Andrew G.\} and Lo{\"i}c Lanco and Alexia Auff{\`e}ves and Pascale Senellart",

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doi = "10.1038/nnano.2017.85",

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T1 - A solid-state single-photon filter

AU - De Santis, Lorenzo

AU - Antón, Carlos

AU - Reznychenko, Bogdan

AU - Somaschi, Niccolo

AU - Coppola, Guillaume

AU - Senellart, Jean

AU - Gómez, Carmen

AU - Lemaître, Aristide

AU - Sagnes, Isabelle

AU - White, Andrew G.

AU - Lanco, Loïc

AU - Auffèves, Alexia

AU - Senellart, Pascale

PY - 2017/7/1

Y1 - 2017/7/1

N2 - A strong limitation of linear optical quantum computing is the probabilistic operation of two-quantum-bit gates based on the coalescence of indistinguishable photons. A route to deterministic operation is to exploit the single-photon nonlinearity of an atomic transition. Through engineering of the atom-photon interaction, phase shifters, photon filters and photon-photon gates have been demonstrated with natural atoms. Proofs of concept have been reported with semiconductor quantum dots, yet limited by inefficient atom-photon interfaces and dephasing. Here, we report a highly efficient single-photon filter based on a large optical nonlinearity at the single-photon level, in a near-optimal quantum-dot cavity interface. When probed with coherent light wavepackets, the device shows a record nonlinearity threshold around 0.3 ± 0.1 incident photons. We demonstrate that 80% of the directly reflected light intensity consists of a single-photon Fock state and that the two- and three-photon components are strongly suppressed compared with the single-photon one.

AB - A strong limitation of linear optical quantum computing is the probabilistic operation of two-quantum-bit gates based on the coalescence of indistinguishable photons. A route to deterministic operation is to exploit the single-photon nonlinearity of an atomic transition. Through engineering of the atom-photon interaction, phase shifters, photon filters and photon-photon gates have been demonstrated with natural atoms. Proofs of concept have been reported with semiconductor quantum dots, yet limited by inefficient atom-photon interfaces and dephasing. Here, we report a highly efficient single-photon filter based on a large optical nonlinearity at the single-photon level, in a near-optimal quantum-dot cavity interface. When probed with coherent light wavepackets, the device shows a record nonlinearity threshold around 0.3 ± 0.1 incident photons. We demonstrate that 80% of the directly reflected light intensity consists of a single-photon Fock state and that the two- and three-photon components are strongly suppressed compared with the single-photon one.

UR - https://www.scopus.com/pages/publications/85022320843

U2 - 10.1038/nnano.2017.85

DO - 10.1038/nnano.2017.85

M3 - Article

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AN - SCOPUS:85022320843

SN - 1748-3387

VL - 12

SP - 663

EP - 667

JO - Nature Nanotechnology

JF - Nature Nanotechnology

IS - 7

ER -

A solid-state single-photon filter

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