Hi everyone,
Tomorrow Gian will give group meeting at 2:30 PM in the Div Room. The title
and abstract are below.
This is the last group meeting at the 2:30 PM slot for this semester - next
week we switch to the Wednesday 11 slot (so next group meeting will be a
week from today on October 21st).
Best,
Ian
-------------------------------------
Speaker: Gian Giacomo Guerreschi
Title: Boson Sampling: Towards practical applications and scalable
implementations
Abstract: Boson sampling, namely the problem of sampling from the output
distribution of passive linear optical networks, is strongly believed to be
intractable on any classical computer, but efficiently solved with the
corresponding quantum optical setup. For this reason, boson sampling
attracted a lot of interest in relation to complexity-theoretic questions
and it may even offer an experimentally realizable challenge to the
Extended Church-Turing thesis. At the same time, current boson sampling
realizations with photonic networks present scalability issues, like
deterministic single photon generation and detection, which need to be
addressed.
In this talk, I will show that the successful development of a boson
sampling apparatus would not only answer abstract complexity questions, but
also yield a practical tool for difficult molecular computations.
Specifically, I will show that a boson sampling device with a modified
input state can be used to generate molecular vibronic spectra, including
complicated effects such as Duschinsky rotations.
Finally, I will discuss our recent proposal to implement boson sampling
with superconducting circuits. Due to the ability of performing
deterministic state preparation and high-fidelity photon detection, we
believe that this architecture constitutes the most realistic
implementation of fully scalable boson sampling.
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