My wife Stella Wang and me at our wedding.

# Patrick Rall's Homepage

I am a Research Staff Member at the IBM Quantum. I work at the MIT-IBM Watson AI Lab in Cambridge, MA.

I obtained my PhD in Physics from the University of Texas at Austin in 2021 where I was advised by Scott Aaronson. Prior to that I completed my undergraduate studies at the California Institute of Technology where I studied Physics and Computer Science under John Preskill.

Curriculum Vitae

## Research at IBM Quantum

Using a Quasi-Cyclic LDPC code as a memory for a Surface Code. See

arXiv:2308.07915.

### Aug 24 2023: Elisa Bäumer, Vinay Tripathi, Derek S. Wang, PR, Edward H. Chen, Swarnadeep Majumder, Alireza Seif, Zlatko K. Minev Efficient Long-Range Entanglement using Dynamic Circuits

arXiv:2308.13065
### Aug 16 2023: Sergey Bravyi, Andrew W. Cross, Jay M. Gambetta, Dmitri Maslov, PR, Theodore J. Yoder High-threshold and low-overhead fault-tolerant quantum memory

arXiv:2308.07915
### Feb 13 2023: Willers Yang, PR. Harnessing the Power of Long-Range Entanglement for Clifford Circuit Synthesis

arXiv:2302.06537
Poster for TQC 2023
Quantum circuit diagram of a linear combination of unitaries.

### Oct 4 2022: PR, Chunhao Wang, Pawel Wocjan. Thermal State Preparation via
Rounding Promises

Quantum 7, 1132
arXiv:2210.01670
Poster for QIP, TQC 2023
### Jul 18 2022: PR, Bryce Fuller. Amplitude estimation from Quantum Signal Processing

arXiv:2207.08628
Slides
Quantum 7, 937

## Research at UT Austin

### Oct 2021: Dissertation: Quantum Algorithms and Monte Carlo Estimation

Defense Slides
Defense Recording
Dissertation
An implementation of Grover's algorithm in Qumquat.

### Oct 28 2021: Jason Pollack, PR, Andrea Rocchetto. Understanding holographic
error correction via unique algebras and atomic examples

JHEP06 56
arXiv:2110.14691
### Sep 29 2021: Logan Hillberry, Matthew Jones, David Vargas, PR, Nicole Yunger
Halpern, Ning Bao, Simone Notarnicola, Simone Montangero, Lincoln Carr. Entangled quantum cellular automata, physical complexity, and Goldilocks rules

Quantum Sci. Technol. 6 045017
### Mar 17 2021: Faster Coherent Quantum Algorithms for Phase, Energy, and Amplitude Estimation

Quantum 5, 566
arXiv:2103.09717
Slides
### Apr 14 2020: Quantum Algorithms for Estimating Physical Quantities using Block-Encodings

Phys. Rev. A 102, 022408
arXiv:2004.06832
Slides
### Aug 28 2019: Scott Aaronson, PR. Quantum Approximate Counting, Simplified

arXiv:1908.10846
### Jan 25 2019: PR, Daniel Liang, Jeremy Cook, William Kretschmer. Simulation of Qubit Quantum Circuits via Pauli Propagation

arXiv:1901.09070
Slides
Poster
### Fall 2018: Qumquat: An experimental high-level quantum programming
language

GitHub
### Apr 15 2018: Simulating Quantum Circuits by Shuffling Paulis

arXiv:1804.05404
Image of a rotating neutron star according to our simulations.

### May 4 2018: Devanshu Panchal, PR. Visualizing Spacetime around Black Holes and Neutron Stars

Manuscript
GitHub
### Aug 30 2017: Fractal Properties of Magic State Distillation

arXiv:1708.09256
### Feb 22 2017: Signed quantum weight enumerators characterize qubit magic state distillation

arXiv:1702.06990

## Pre-Graduate Research

### 2016-17: PR, Iskren Vankov. Quantum Circuit Simulator

GitHub
Slides
### 2015: Quantum Cellular Automata for the Analysis of Entanglement Complexity in Quantum Many-Body Systems

Manuscript
Evolution of a quantum block cellular automaton.

### 2013: Laksh Bhasin, PR. A Brute-Force Approach to Fiber-Optic Sensors: Achieving High-Precision Results with Low-Resolution SLED-Based Spectrometers

Manuscript
### 2011: Fengning Ding, Jason Liu, PR. Orbit Determination of 1951 Lick

Manuscript
### 2010, 2012: Evaluation of Jet Reconstruction Algorithms for a Measurement of the Top-Quark Mass in the tt-bar to lepton+jets Channel at ATLAS

Manuscript

Last update: August 2023