Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide
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Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide. / Kirsanské, Gabija; Nielsen, Henri Thyrrestrup; Daveau, Raphaël Sura; Dreessen, Chris L; Pregnolato, Tommaso; Midolo, Leonardo; Tighineanu, Petru; Javadi, Alisa; Stobbe, Søren; Ludwig, Arne; Schott, Rüdiger; Wieck, Andreas D.; Park, Suk In; Song, J.D.; Kuhlmann, Andreas; Söllner, Immo; Löbel, Matthias; Warburton, R.J.; Lodahl, Peter.
In: Physical Review B, Vol. 96, 165306, 19.10.2017.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide
AU - Kirsanské, Gabija
AU - Nielsen, Henri Thyrrestrup
AU - Daveau, Raphaël Sura
AU - Dreessen, Chris L
AU - Pregnolato, Tommaso
AU - Midolo, Leonardo
AU - Tighineanu, Petru
AU - Javadi, Alisa
AU - Stobbe, Søren
AU - Ludwig, Arne
AU - Schott, Rüdiger
AU - Wieck, Andreas D.
AU - Park, Suk In
AU - Song, J.D.
AU - Kuhlmann, Andreas
AU - Söllner, Immo
AU - Löbel, Matthias
AU - Warburton, R.J.
AU - Lodahl, Peter
PY - 2017/10/19
Y1 - 2017/10/19
N2 - We demonstrate a high-purity source of indistinguishable single photons using a quantum dot embedded in a nanophotonic waveguide. The source features a near-unity internal coupling efficiency and the collected photons are efficiently coupled off chip by implementing a taper that adiabatically couples the photons to an optical fiber. By quasiresonant excitation of the quantum dot, we measure a single-photon purity larger than 99.4% and a photon indistinguishability of up to 94±1% by using p-shell excitation combined with spectral filtering to reduce photon jitter. A temperature-dependent study allows pinpointing the residual decoherence processes, notably the effect of phonon broadening. Strict resonant excitation is implemented as well as another means of suppressing photon jitter, and the additional complexity of suppressing the excitation laser source is addressed. The paper opens a clear pathway towards the long-standing goal of a fully deterministic source of indistinguishable photons, which is integrated on a planar photonic chip.
AB - We demonstrate a high-purity source of indistinguishable single photons using a quantum dot embedded in a nanophotonic waveguide. The source features a near-unity internal coupling efficiency and the collected photons are efficiently coupled off chip by implementing a taper that adiabatically couples the photons to an optical fiber. By quasiresonant excitation of the quantum dot, we measure a single-photon purity larger than 99.4% and a photon indistinguishability of up to 94±1% by using p-shell excitation combined with spectral filtering to reduce photon jitter. A temperature-dependent study allows pinpointing the residual decoherence processes, notably the effect of phonon broadening. Strict resonant excitation is implemented as well as another means of suppressing photon jitter, and the additional complexity of suppressing the excitation laser source is addressed. The paper opens a clear pathway towards the long-standing goal of a fully deterministic source of indistinguishable photons, which is integrated on a planar photonic chip.
U2 - 10.1103/PhysRevB.96.165306
DO - 10.1103/PhysRevB.96.165306
M3 - Journal article
VL - 96
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
M1 - 165306
ER -
ID: 184667310