Boson Sampling with Ultracold Atoms
- URL: http://arxiv.org/abs/2208.12253v1
- Date: Thu, 25 Aug 2022 17:57:31 GMT
- Title: Boson Sampling with Ultracold Atoms
- Authors: Carsten Robens, I\~nigo Arrazola, Wolfgang Alt, Dieter Meschede, Lucas
Lamata, Enrique Solano, and Andrea Alberti
- Abstract summary: We propose a scheme to implement a boson sampling machine with ultracold atoms in a polarization-synthesized optical lattice.
We experimentally demonstrate the basic building block of such a machine by revealing the Hong-Ou-Mandel interference of two bosonic atoms in a four-mode interferometer.
Our results show that a quantum advantage compared to today's best supercomputers can be reached with $N gtrsim 40$.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Sampling from a quantum distribution can be exponentially hard for classical
computers and yet could be performed efficiently by a noisy intermediate-scale
quantum device. A prime example of a distribution that is hard to sample is
given by the output states of a linear interferometer traversed by $N$
identical boson particles. Here, we propose a scheme to implement such a boson
sampling machine with ultracold atoms in a polarization-synthesized optical
lattice. We experimentally demonstrate the basic building block of such a
machine by revealing the Hong-Ou-Mandel interference of two bosonic atoms in a
four-mode interferometer. To estimate the sampling rate for large $N$, we
develop a theoretical model based on a master equation. Our results show that a
quantum advantage compared to today's best supercomputers can be reached with
$N \gtrsim 40$.
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