Hi all,
I will be giving group meeting tomorrow! The title and abstract are
included inline after this message.
Note the nonstandard time.
See you there,
Ian
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SPEAKER: Ian Kivlichan
TITLE: Exponentially more precise quantum simulation of fermions
ABSTRACT: I will introduce two new algorithms for quantum simulation of
second-quantized quantum chemistry which scale exponentially better in
terms of precision than methods based on the Trotter-Suzuki decomposition.
Whereas the best proven time complexity of algorithms based on the
Trotter-Suzuki expansion is O(N^8 t / poly(epsilon)), where N is the number
of spin-orbitals, t is the simulation time, and epsilon is the error, I
will expound 1. an algorithm using a classical database which (up to
logarithmic factors) scales as O(N^8 t) and 2. an algorithm which computes
molecular integrals on-the-fly which (up to logarithmic factors) scales as
only O(N^5 t), both of which use the recent truncated Taylor series
technique of Berry et al.
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