About us
This is a group for anyone interested in Quantum Computing and Quantum Information in the Washington DC area. I started this group to find and meet the people around who will do events and participate in the discussion of the topics related to Quantum Computing.
Upcoming events
5

Compactifying the Electronic Wavefunction II: Quantum Estimators for Spin-Couple
Location not specified yetFull title: Compactifying the Electronic Wavefunction II: Quantum Estimators for Spin-Coupled Generalized Valence Bond Wavefunctions
Date: July 26 2026 Sunday 13:00 - 15:00 EDT
Summary: We present a measurement-driven quantum framework for evaluating overlap and Hamiltonian matrix elements in spin-coupled generalized valence bond (SCGVB) wavefunctions. The approach targets a central difficulty of nonorthogonal valence-bond methods: estimating matrix elements between distinct, generally nonorthogonal configuration state functions. Rather than preparing the full wavefunction on quantum hardware, we reformulate the required quantities as vacuum expectation values of Pauli-string operators that can be accessed using shallow, ancilla-free circuits composed of local Clifford rotations and computational-basis measurements. In contrast to Hadamard-test-based matrix-element estimation, this construction avoids ancilla qubits and controlled operations by reducing the problem to local Pauli measurements. This separates the algebraic construction of the SCGVB problem from the measurement task executed on the quantum register and yields a low-depth strategy compatible with near-term architectures. We demonstrate the framework on square and rectangular H4 using quantum-circuit emulation, where the resulting overlap and Hamiltonian matrices reproduce classical Lowdin-based references with good accuracy across the geometries considered, and where derived Coulson-Chirgwin weights remain chemically consistent. These results support the feasibility of measurement-based quantum assistance for nonorthogonal SCGVB expansions and provide a practical route for incorporating quantum measurements into valence-bond electronic-structure workflows. Reference: https://arxiv.org/abs/2603.12045Speaker: Dr. Bruna Gabrielly, postdoctoral fellow at Purdue University
Moderator: Dr. Sebastian Zajac, member of QPoland17 attendees
Mathematical foundations for Modern Cryptography in the Quantum Era
Location not specified yetTitle: Mathematical foundations for Modern Cryptography in the Quantum Era
Date: August 1 2026 Saturday Noon - 14:00 EDT
Summary:
This paper shows the most relevant concepts for cybersecurity and explores their counterpart in the quantum context. We describe the most relevant protocols for classical and quantum cryptography. Additionally, we expect to work on this topic and include ideas from quantum computing, machine learning, and deep learning to provide a first outline to the next generation of scientists, particularly in post-quantum cryptography era. This project is in progress, and we expect to cover more concepts to contribute to the next generation of ciphers.
Speaker: Dr. Javier is a researcher in quantum computing, machine learning, and data science, developing mathematical and computational frameworks for hybrid quantum–classical systems and secure AI. He is an educator and technology leader working at the intersection of data science, machine learning, quantum computing, and quantum cryptography. His work focuses on developing mathematical and computational methods that bridge artificial intelligence, advanced computing architectures, and secure information systems. He has taught and conducted research at institutions including UNAM (Mexico), Earlham College (USA), and Baylor University (USA), where he integrates physics, mathematics, and computer science to train students in emerging technologies such as machine learning, quantum information science, and scientific computing. Dr. Orduz leads initiatives that expand access to advanced computing and quantum technologies. He founded QMexico (QMexico - QWorld), a network promoting quantum science and education in Latin America, and created several programs focused on interdisciplinary training in quantum computing and emerging computational technologies. He also founded Qaldas, an initiative dedicated to research, software development, and consulting in AI, quantum computing, and advanced data analytics.
Moderators: Dr. Pawel Gora, CEO of Quantum AI Foundation Quantum AI Foundation and Dr. Sebastian Zajac, member of QPoland QPoland - QWorld23 attendees
A Theorist’s Quantum Simulations with Rydberg Atom Arrays
Location not specified yetTitle: A Theorist’s Quantum Simulations with Rydberg Atom Arrays
Date: August 15 2026 Noon - 14:00 EDT
Abstract:
Unprecedented control of light-atom interactions presents a unique opportunity to physicists to prepare fundamentally interesting and technologically useful quantum states of matter. I will highlight two recent quantum simulations that we performed on remotely accessible Rydberg atom array of QuEra Computing. In the first one [1], we experimentally investigate the far from equilibrium physics of transverse-field Ising model, a prototypical model in statistical mechanics, and uncover significant deviations from the theoretical predictions. We theoretically traced this discrepancy to atom motion which acts as an emergent disorder in Rydberg atom arrays and elucidated our observations with a minimal random spin model. In the second quantum simulation [2], we prepared a multi-partite entangled state known as W state in quantum information science by employing quantum many-body physics of topological ring frustration. To demonstrate quantum coherence and entanglement in the experimentally prepared state, we developed a Bayesian state tomography protocol and bounded the measured state fidelity. These works show that, as NISQ technologies advance, the gap between theory and experiment in quantum simulation is narrowing, ushering in an era where quantum simulation is becoming an essential tool in the theorist’s toolbox.
Reference:
[1] Phys. Rev. Lett. 135, 250403 (2025) https://journals.aps.org/prl/abstract/10.1103/jr7l-2cfb
[2] arXiv:2510.17974 https://arxiv.org/abs/2510.17974Speaker: Dr. Ceren Dag is an assistant professor of the physics department in Indiana University, Bloomington.
She earned her Ph.D. in Physics from University of Michigan Ann Arbor in 2021. She was a ITAMP postdoctoral fellow at Harvard University. Her publications can be found at https://scholar.google.com/citations?user=gAKYr8sAAAAJ&hl=en9 attendees
Past events
208



