80 citations · 244 across the 15 of their papers we have counts for
16 papers
Quantum error correction well below the color code threshold
Ali Lavasani, Adam P. Reed, Joan M. Dreiling +20
Quantum error correction enables scalable fault-tolerant quantum computation by suppressing logical errors exponentially with code distance once physical error rates fall below a c…
Experimental validation of a compact fault-tolerant architecture for trapped ions
Noah Berthusen, Ali Lavasani, Asmae Benhemou +11
Quantum error correction (QEC) is beginning to enable logical operations that outperform their unencoded physical counterparts, but useful fault-tolerant computation will require m…
Automated logical Clifford gadgets for heterogeneous architectures via chain maps
Asmae Benhemou, Noah Berthusen
Transversal CNOTs are ubiquitous for entangling logical qubits of identical CSS codes pairwise. For distinct codes, the options are much more limited, and are typically known only…
Simple logical quantum computation with concatenated symplectic double codes
Noah Berthusen, Elijah Durso-Sabina
There have been significant recent advances in constructing theoretical and practical quantum error correcting codes that function well as quantum memories; however, performing fau…
Automorphism gadgets in homological product codes
Noah Berthusen, Michael J. Gullans, Yifan Hong +2
The homological product is a general-purpose recipe that forges new quantum codes from arbitrary classical or quantum input codes, often providing enhanced error-correcting propert…
Adaptive Syndrome Extraction
Noah Berthusen, Shi Jie Samuel Tan, Eric Huang +1
Device error rates on current quantum computers have improved enough to where demonstrations of error correction below break-even are now possible. Still, the circuits required for…
Experiments with the 4D Surface Code on a QCCD Quantum Computer
Noah Berthusen, Joan Dreiling, Cameron Foltz +9
Single-shot quantum error correction has the potential to speed up quantum computations by removing the need for multiple rounds of syndrome extraction in order to be fault-toleran…
Multi-reference Quantum Davidson Algorithm for Quantum Dynamics
Noah Berthusen, Faisal Alam, Yu Zhang
Simulating quantum systems is one of the most promising tasks where quantum computing can potentially outperform classical computing. However, the robustness needed for reliable si…
Toward a 2D Local Implementation of Quantum LDPC Codes
Noah Berthusen, Dhruv Devulapalli, Eddie Schoute +4
Geometric locality is an important theoretical and practical factor for quantum low-density parity-check (qLDPC) codes which affects code performance and ease of physical realizati…
Partial Syndrome Measurement for Hypergraph Product Codes
Noah Berthusen, Daniel Gottesman
Hypergraph product codes are a promising avenue to achieving fault-tolerant quantum computation with constant overhead. When embedding these and other constant-rate qLDPC codes int…
Comparative study of adaptive variational quantum eigensolvers for multi-orbital impurity models
Anirban Mukherjee, Noah F. Berthusen, João C. Getelina +2
Hybrid quantum-classical embedding methods for correlated materials simulations provide a path towards potential quantum advantage. However, the required quantum resources arising…
Quantum dynamics simulations beyond the coherence time on NISQ hardware by variational Trotter compression
Noah F. Berthusen, Thaís V. Trevisan, Thomas Iadecola +1
We demonstrate a post-quench dynamics simulation of a Heisenberg model on present-day IBM quantum hardware that extends beyond the coherence time of the device. This is achieved us…
Learning crystal field parameters using convolutional neural networks
Noah F. Berthusen, Yuriy Sizyuk, Mathias S. Scheurer +1
We present a deep machine learning algorithm to extract crystal field (CF) Stevens parameters from thermodynamic data of rare-earth magnetic materials. The algorithm employs a two-…
Shallow-circuit variational quantum eigensolver based on symmetry-inspired Hilbert space partitioning for quantum chemical calculations
Feng Zhang, Niladri Gomes, Noah F. Berthusen +4
Development of resource-friendly quantum algorithms remains highly desirable for noisy intermediate-scale quantum computing. Based on the variational quantum eigensolver (VQE) with…
Efficient step-merged quantum imaginary time evolution algorithm for quantum chemistry
Niladri Gomes, Feng Zhang, Noah F. Berthusen +4
We develop a resource efficient step-merged quantum imaginary time evolution approach (smQITE) to solve for the ground state of a Hamiltonian on quantum computers. This heuristic m…
Quantum Logic Gate Synthesis as a Markov Decision Process
M. Sohaib Alam, Noah F. Berthusen, Peter P. Orth
Reinforcement learning has witnessed recent applications to a variety of tasks in quantum programming. The underlying assumption is that those tasks could be modeled as Markov Deci…