Realisation of a Coherent and Efficient One-Dimensional Atom
- URL: http://arxiv.org/abs/2402.12568v1
- Date: Mon, 19 Feb 2024 21:48:12 GMT
- Title: Realisation of a Coherent and Efficient One-Dimensional Atom
- Authors: Natasha Tomm, Nadia O. Antoniadis, Marcelo Janovitch, Matteo Brunelli,
R\"udiger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig, Patrick
Potts, Alisa Javadi, Richard J. Warburton
- Abstract summary: A coherent and efficiently coupled one-dimensional atom provides a large nonlinearity, enabling photonic quantum gates.
We use a semiconductor quantum dot in an open microcavity as an implementation of a one-dimensional atom.
Our results pave the way towards the creation of exotic photonic states and two-photon phase gates.
- Score: 0.15729203067736897
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: A quantum emitter interacting with photons in a single optical mode
constitutes a one-dimensional atom. A coherent and efficiently coupled
one-dimensional atom provides a large nonlinearity, enabling photonic quantum
gates. Achieving a high coupling efficiency ($\beta$-factor) and low dephasing
is challenging. Here, we use a semiconductor quantum dot in an open microcavity
as an implementation of a one-dimensional atom. With a weak laser input, we
achieve an extinction of $99.2\%$ in transmission and a concomitant bunching in
the photon statistics of $g^{(2)}(0) = 587$, showcasing the reflection of the
single-photon component and the transmission of the multi-photon components of
the coherent input. The tunable nature of the microcavity allows $\beta$ to be
adjusted and gives control over the photon statistics -- from strong bunching
to anti-bunching -- as well as over the phase of the transmitted photons. We
obtain excellent agreement between experiment and theory by going beyond the
single-mode Jaynes-Cummings model. Our results pave the way towards the
creation of exotic photonic states and two-photon phase gates.
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