Past Events

Gian Michele Graf (ETH Zurich): An elementary derivation of the periodic table of topological matter

June 5, 2026

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3:00PM - 4:00PM EDT

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Jefferson 356

In Person

Speaker: Gian Michele Graf Title: An elementary derivation of the periodic table of topological matter Abstract: Band insulators and superconductors are of topological interest, depending on the dimension of physical space and on their symmetry classes...

William Simon (Tufts): Quantum Advantage in Resource Estimation

June 3, 2026

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3:00PM - 4:00PM EDT

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Jefferson 368

In Person

Title: Quantum Advantage in Resource Estimation Abstract: When will quantum computers be useful? Resource estimation - the process of determining how many qubits and operations are needed to run an algorithm - is central to answering this question...

Carter Gustin (Tufts): Quantum Simulation of Renormalized Quantum Field Theory Hamiltonians

May 20, 2026

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3:00PM - 4:00PM EDT

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Jefferson 368

In Person

Speaker: Carter Gustin Title: Quantum Simulation of Renormalized Quantum Field Theory Hamiltonians Abstract: The most accurate ab-initio calculations of hadronic structure have been achieved through lattice QCD, which is classically computationally...

Peter Love (Tufts): Non-contextual approximations, Magic, and Correlation energy

May 13, 2026

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3:00PM - 4:00PM EDT

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Jefferson 368

In Person

Title: Non-contextual approximations, Magic, and Correlation energy Abstract: What distinguishes quantum from classical computation? Contextuality, entanglement and more recently magic are leading measures of nonclassicality. I will describe non...

Michael Douglas (Harvard): Formalization of QFT

May 6, 2026

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3:00PM - 4:00PM EDT

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Jefferson 368

In Person

Speaker: Michael Douglas Title: Formalization of QFT Abstract: Interactive theorem proving with the Lean 4 theorem prover, Mathlib and AI coding assistants has recently become a powerful method for checking and developing rigorous mathematical proofs. In...

Kaifeng Bu (Ohio State): Hamiltonian Decoded Quantum Interferometry for General Pauli Hamiltonians

April 29, 2026

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3:00PM - 4:00PM EDT

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Jefferson 368 and Zoom https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09

Hybrid

Speaker: Kaifeng Bu (Ohio State) Title: Hamiltonian Decoded Quantum Interferometry for General Pauli Hamiltonians Abstract: Decoded Quantum Interferometry (DQI) has been recently proposed as a new quantum algorithm for optimization. Hamiltonian Decoded...

Sasha Geim (Harvard): A fault-tolerant neutral-atom architecture for universal quantum computation

March 3, 2026

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4:00PM - 5:00PM EST

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Jefferson 256 and Zoom https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09

Hybrid

Passcode: 657361 Speaker: Sasha Geim Title: A fault-tolerant neutral-atom architecture for universal quantum computation Abstract: Quantum error correction enables coherent computation on encoded logical qubits while simultaneously removing errors from...

Henrik Dreyer (Quantinuum): Superconducting pairing correlations on a 98-qubit trapped-ion quantum computer

February 10, 2026

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4:00PM - 5:00PM EST

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Zoom https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09

Virtual

Passcode: 657361 Speaker: Henrik Dreyer Title: Superconducting pairing correlations on a 98-qubit trapped-ion quantum computer Abstract: The Fermi-Hubbard model is the starting point for the simulation of many strongly correlated materials, including high...

Yasuyuki Kawahigashi (University of Tokyo/RIKEN): Tensor networks, fusion categories and operator algebras

October 23, 2025

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4:00PM - 5:00PM EDT

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Jefferson 368

In Person

Passcode: 657361 Speaker: Yasuyuki Kawahigashi Title: Tensor networks, fusion categories and operator algebras Abstract: Certain 4-tensors have been used to study two-dimensional topological order, and we identified them with bi-unitary connections in...

Zhengwei Liu (Tsinghua University): A new way to understand computational complexity

May 15, 2025

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4:30PM - 5:30PM EDT

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Jefferson 256 and Zoom https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09

Hybrid

Passcode: 657361 Speaker: Zhengwei Liu Title: A new way to understand computational complexity

Zhengwei Liu (Tsinghua University): Alterfold Theory and Quantum Error Correction

April 15, 2025

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4:30PM - 5:30PM EDT

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Jefferson 256 and Zoom

Hybrid

Passcode: 657361 Speaker: Zhengwei Liu Title: Alterfold Theory and Quantum Error Correction Abstract: We will present new insights in alterfold theory and quon language to study quantum error corrections. We provide a learning-based framework for...

Zhengwei Liu (Tsinghua University): Alterfold Theory and Entanglement Entropy

April 8, 2025

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4:30PM - 5:30PM EDT

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Jefferson 256 and Zoom

Hybrid

Passcode: 657361 Speaker: Zhengwei Liu Title: Alterfold Theory and Entanglement Entropy Abstract: We will present new insights in alterfold theory to study entanglement entropy. We illustrate these insights by computing the entanglement entropy for...