Polarization-independent single-photon switch based on a fiber-optical
Sagnac interferometer for quantum communication networks
- URL: http://arxiv.org/abs/2009.02385v1
- Date: Fri, 4 Sep 2020 20:32:37 GMT
- Title: Polarization-independent single-photon switch based on a fiber-optical
Sagnac interferometer for quantum communication networks
- Authors: A. Alarc\'on, P. Gonz\'alez, J. Cari\~ne, G. Lima, G. B. Xavier
- Abstract summary: We implement an optical switch capable of dynamically routing single-photons.
The routing is implemented with a pair of fast electro-optical telecom phase modulators placed inside the Sagnac loop.
We obtain an average extinction ratio of more than 19 dB between both outputs of the switch.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: An essential component of future quantum networks is an optical switch
capable of dynamically routing single-photons. Here we implement such a switch,
based on a fiber-optical Sagnac interferometer design. The routing is
implemented with a pair of fast electro-optical telecom phase modulators placed
inside the Sagnac loop, such that each modulator acts on an orthogonal
polarization component of the single-photons, in order to yield
polarization-independent capability that is crucial for several applications.
We obtain an average extinction ratio of more than 19 dB between both outputs
of the switch. Our experiment is built exclusively with commercial
off-the-shelf components, thus allowing direct compatibility with current
optical communication systems.
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