66 citations · 78 across the 3 of their papers we have counts for
5 papers
Direct interpolative construction of the discrete Fourier transform as a matrix product operator
Jielun Chen, Michael Lindsey
The quantum Fourier transform (QFT), which can be viewed as a reindexing of the discrete Fourier transform (DFT), has been shown to be compressible as a low-rank matrix product ope…
Sign problem in tensor network contraction
Jielun Chen, Jiaqing Jiang, Dominik Hangleiter +1
We investigate how the computational difficulty of contracting tensor networks depends on the sign structure of the tensor entries. Using results from computational complexity, we…
Quantum Fourier Transform Has Small Entanglement
Jielun Chen, E. M. Stoudenmire, Steven R. White
The Quantum Fourier Transform (QFT) is a key component of many important quantum algorithms, most famously as being the essential ingredient in Shor's algorithm for factoring produ…
Conditional probability density functional theory
Ryan Pederson, Jielun Chen, Steven R. White +1
We present conditional probability (CP) density functional theory (DFT) as a formally exact theory. In essence, CP-DFT determines the ground-state energy of a system by finding the…
How Well Does Kohn-Sham Regularizer Work for Weakly Correlated Systems?
Bhupalee Kalita, Ryan Pederson, Jielun Chen +2
Kohn-Sham regularizer (KSR) is a differentiable machine learning approach to finding the exchange-correlation functional in Kohn-Sham density functional theory (DFT) that works for…