Quantum-enhanced electric field sensing using 2D Crystals of over 100 Ions in a Penning Trap
Abstract: Utilizing quantum mechanical effects such as entanglement can allow sensors to have sensitivities below those imposed on purely classical states. As an example, our experiment has utilized entanglement of the spin and collective motion of 2D crystals of over 100 ions in a Penning trap to demonstrate a sensitivity to displacements of 8.8 ± 0.4 decibels below the standard quantum limit [Science 373, 673 (2021)].
JQI Alumnus Wes Campbell Elected to APS DAMOP Leadership
JQI alumnus Wes Campbell was elected vice chair of the American Physics Society (APS) Division of Atomic, Molecular & Optical Physics (DAMOP) executive committee.
Join JQI for Our Third Annual World Quantum Day Reddit Event
In honor of World Quantum Day on Sunday, April 14, we will be hosting our third annual Ask Us Anything event on Reddit beginning at 10 a.m. EDT on Friday, April 12.
Our thread is live: https://www.reddit.com/r/IAmA/comments/1c27ckj/we_are_quantum_scientists_at_the_university_of/.
Our prior two events are available at the links below:
Photon-Mediated Interactions in Lattices of Coplanar Waveguide Resonators
Abstract: Circuit quantum electrodynamics (circuit QED) has become one of the main platforms for quantum simulation and computation. One of its notable advantages is its ability to facilitate the study of new regimes of light-matter interactions. This is achieved due to the native strong coupling between superconducting qubits and microwave resonators, and the ability to lithographically define a large variety of resonant microwave structures, for example, photonic crystals.
Photon-Mediated Interactions in Lattices of Coplanar Waveguide Resonators
Circuit quantum electrodynamics (circuit QED) has become one of the main platforms for quantum simulation and computation. One of its notable advantages is its ability to facilitate the study of new regimes of light-matter interactions. This is achieved due to the native strong coupling between superconducting qubits and microwave resonators, and the ability to lithographically define a large variety of resonant microwave structures, for example, photonic crystals.
Ultracold Gases in a Two-Frequency Breathing Lattice
Dissertation Committee Chair: Prof. Steve Rolston
Committee:
Prof. Gretchen Campbell
Prof. Nathan Schine
Prof. Ron Walsworth
Prof. Ki-yong Kim
How to relate quantum position verification to information-theoretic cryptography, and new steps towards practical implementation
The task of quantum position verification (QPV) deploys quantum information with the aim to use a party's position as a cryptographic credential. One well-studied proposed protocol for this task, f-routing, involves a mixture of classical information and a single quantum bit that has to be routed somewhere as a function of the classical information.
A Focused Approach Can Help Untangle Messy Quantum Scrambling Problems
The world is a cluttered, noisy place, and the ability to effectively focus is a valuable skill. Researchers at JQI have identified a new way to focus their attention and obtain useful insights into the way information associated with a configuration of interacting particles gets dispersed and effectively lost over time. Their technique focuses on a single feature that describes how various amounts of energy can be held by different configurations a quantum system. The approach provides insight into how a collection of quantum particles can evolve without the researchers having to grapple with the intricacies of the interactions that make the system change over time.
Microscopic and Emergent Dynamics of Quantum Information Flows
Abstract: The past fifty years of scientific and technological progress have clearly highlighted information as a physical resource - one that can be traded for heat, work, and other energetic resources. With the ongoing new wave of quantum-based technologies, understanding the microscopic and emergent dynamics of quantum information in many-body quantum systems has thus become a priority.