Deterministic photon storage and readout in a semimagnetic
quantum-dot--cavity system doped with a single Mn ion
- URL: http://arxiv.org/abs/2110.07576v2
- Date: Wed, 9 Feb 2022 11:13:56 GMT
- Title: Deterministic photon storage and readout in a semimagnetic
quantum-dot--cavity system doped with a single Mn ion
- Authors: M. Cosacchi, T. Seidelmann, A. Mielnik-Pyszczorski, M. Neumann, T. K.
Bracht, M. Cygorek, A. Vagov, D. E. Reiter, V. M. Axt
- Abstract summary: We propose a single-photon buffering device composed of a quantum dot doped with a single Mn atom in a cavity.
We present a method to detain a single cavity photon as an excitation of the dot.
Results indicate the possibility to suspend a photon for almost two orders of magnitude longer than the lifetime of the bright exciton.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Light trapping is a crucial mechanism for synchronization in optical
communication. Especially on the level of single photons, control of the exact
emission time is desirable. In this paper, we theoretically propose a
single-photon buffering device composed of a quantum dot doped with a single Mn
atom in a cavity. We present a method to detain a single cavity photon as an
excitation of the dot. The storage scheme is based on bright to dark exciton
conversion performed with an off-resonant external optical field and mediated
via a spin-flip with the magnetic ion. The induced Stark shift brings both
exciton states to resonance and results in an excitation transfer to the
optically inactive one. The stored photon can be read out on demand in the same
manner by repopulating the bright state, which has a short lifetime. Our
results indicate the possibility to suspend a photon for almost two orders of
magnitude longer than the lifetime of the bright exciton.
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