QURiSE

Victor Albert

Assist. Professor, QuICS Fellow, UMD

 Gretchen Campbell

Associate Vice President for Quantum Research & Education, UMD

Alexander Craddock

Senior Scientist, Qunnect

Sophia Economou

Director, Center for Quantum Information Science and Engineering, Virginia Tech

Robert Ivester

Senior Advisor, Advanced Manufacturing, NIST

Aaron Lee

Staff Physicist, Northrop Grumman

Chris Overstreet

Assistant Professor, Johns Hopkins University

Steve Rolston

Physics Professor, UMD

Kasra Sardashti

Physics Professor, Executive Director of Quantum Collaborative Research Corps, UMD

Alireza Seif

Research Scientist, IBM

Ron Walsworth

Director, Quantum Technology Center, UMD

Ken Wright

Director, System Integration and Performance, IonQ

Christian Ganter, Princeton University

Temperature-Resistant Josephson Junction Fabrication With SiN Stencils For Superconducting Qubits

Josephson junctions are key components of transmon qubits and, due to fabrication constraints, are nearly always made with aluminum despite significant TLS losses in its amorphous oxide. This project thus explores deposition with silicon nitride hard masks, which tolerate higher deposition temperatures than commonly used organic resists, potentially enabling junction fabrication with less lossy materials. This talk covers the fabrication of these masks, handling considerations for the fragile membranes, and results from a first set of test depositions.

Colin La, California Institute of Technology

Twisted CSS codes

Despite recent progress in constructing quantum low-density parity-check (qLDPC) codes with good code parameters, fault-tolerant logical gate implementation remains a challenge. Twisted CSS codes, which decorate (X)-stabilizers with diagonal phases, provide a way to enable transversal non-Clifford gates, potentially even in lower-dimensional geometries. We develop an algebraic framework for understanding these codes and how transversal non-Clifford gates arise, which may ultimately lead to novel code constructions.

Melody Lee, Georgia Institute of Technology

Investigating Localization Using Wavepacket Dynamics On Quantum Computers

While the dynamics of single particles are simulatable on classical computers, these simulations become exponentially complex when scaled to include many interacting particles, whereas the nature of quantum computers makes them ideal for tackling such problems. However, current simulation methods of particle dispersion as a function of energy are limited. In this talk, we introduce a novel approach to identifying mobility edges using digital quantum computers by probing localization as a function of energy via the time-evolution of wavepackets.

Peter Mukovskiy, Massachusetts Institute of Technology

Single Photon Detection with a Transmon Qubit

Superconducting transmon qubits can detect single microwave photons, whose energy is far too low for conventional photodetectors. Through a four-wave-mixing process, an incoming photon is irreversibly converted into a qubit excitation, which is subsequently read out. We use this scheme to characterize the thermal photon population inside a dilution refrigerator.

Aatmaj Rajesh, The Ohio State University

Phases of a Transverse Field Ising Model on a Dual-Species Array

Neutral atom quantum computers have emerged as a powerful platform for simulating and probing fundamental physics. In this talk, I will describe the phases and transitions of a dual-species transverse-field Ising model, which may be realized on a dual-isotope rubidium array. Combining exact diagonalization, mean-field analysis, and perturbation theory, we identify several experimentally accessible features, including magnetic order tunable by unequal sublattice transverse fields, fluctuation-induced reentrant ferromagnetism reminiscent of order-by-disorder, and an effective sublattice Hamiltonian mediated by inter-isotope interactions with a field-tunable Ising endpoint.

Vanessa Zhang, University of Illinois, Urbana-Champaign

Quantum Position Verification: How Quantum Mechanics Can Securely Confirm Someone's Location

It is of significant interest to be able to verify an untrusted party’s location against remote attackers, also known as position verification. Only quantum position verification (QPV) schemes can be cryptographically secure, and researchers are beginning to experimentally implement proof-of-theory QPV protocols. My talk details the foundations of QPV theory, the particular f-measure protocol my group is implementing, and the equipment we are building to implement it.

Steve Rolston

Physics Professor, UMD

Gretchen Campbell

Associate Vice President for Quantum Research & Education, UMD

Donna Hammer

Physics Director of Education, UMD

Angel Torres

Physics Graduate Program Coordinator, UMD

Devon Freeman

Academic Program Specialist, UMD

Stephanie Williams

Senior Academic Advisor, UMD

Sarah Monk

Membership Recruitment & Retention Manager, APS

Marissa McMaster

Graduate Student, UMD

Rafael Romero Mendez

Graduate Student, UMD

Yash Anand

Graduate Student, MIT

 Samantha Otazo

Quantum Undergraduate Researcher, Co-President of the Physics Undergraduate Student Committee, UMD

Isaac Sherwood

Quantum Undergraduate Researcher, President of the Society of Physics Students, UMD