Quantum-Clustered Two-Photon Walks
- URL: http://arxiv.org/abs/2003.05901v1
- Date: Thu, 12 Mar 2020 17:02:35 GMT
- Title: Quantum-Clustered Two-Photon Walks
- Authors: David S. Simon, Shuto Osawa, Alexander V. Sergienko
- Abstract summary: We demonstrate a previously unknown two-photon effect in a discrete-time quantum walk.
Two identical bosons with no mutual interactions can remain clustered together.
The two photons move in the same direction at each step due to a two-photon quantum interference phenomenon.
- Score: 68.8204255655161
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We demonstrate a previously unknown two-photon effect in a discrete-time
quantum walk. Two identical bosons with no mutual interactions nonetheless can
remain clustered together as they walk on a lattice of directionally-reversible
optical four-ports acting as Grover coins; both photons move in the same
direction at each step due to a two-photon quantum interference phenomenon
reminiscent of the Hong-Ou-Mandel effect. The clustered two-photon amplitude
splits into two localized parts, one oscillating near the initial point, and
the other moving ballistically without spatial spread, in soliton-like fashion.
But the two photons are always clustered in the same part of the superposition,
leading to potential applications for transport of entanglement and
opportunities for novel two-photon interferometry experiments.
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