Fall 2021

Local to Meso-scale Order in Electronic Ceramics Characterized by Aberration-Corrected Scanning Transmission Electron Microscopy

Elizabeth Dickey
Friday, December 3, 2021 - 12:15pm

A CMU MSE Seminar

Abstract: The ability to design the composition and microstructure of electronic ceramics for emerging technological applications requires sophisticated characterization techniques that can provide quantitative information about local structure and chemistry. Such structure quantification is particularly important to the fundamental understanding of properties in many important non-linear dielectrics, where chemical heterogeneities associated with dopants or intrinsic lattice defects give rise to local inhomogeneities in charge, strain and...

NSF Grant Will Boost Pitt’s Research Computing Resources

  • By Jennifer Zheng
  • 23 November 2021

A multi-disciplinary team of Pitt researchers has landed a $1.2 million National Science Foundation (NSF) award for new computing resources that will greatly boost the Center for Research Computing’s (CRC) capabilities in speed, power, and scope. Chemistry associate professor Geoffrey Hutchison led the proposal along with associate professors Lillian Chong in chemistry, Inanc Senocak in mechanical engineering and materials science, and David Koes in computational and systems biology. Internal Pitt funding added to the grant creates a total of over $1.5 million for new resources...

Structural Inhomogeneity in Oxide Superconductors

Martin Greven
Wednesday, December 8, 2021 - 4:00pm

A STO seminar

Abstract: Superconductivity has been a major research topic for more than a century, yet in many important materials this macroscopic quantum phenomenon remains poorly understood. We have uncovered that superconductivity emerges in an unusual, yet remarkably universal manner upon cooling in three well-known families of complex oxides – strontium titanate, strontium ruthenate, and the cuprates – for which the origin of superconductivity is thought to differ [1]. This breakthrough was enabled by nonlinear magnetic response measurements, an...

Quantum Advantage in Optical Laser Communications using NISQ-era Quantum Processors

Kaushik P. Seshadreesan
Friday, December 3, 2021 - 11:00am

A PQI Seminar

Abstract: Optical laser communication forms a cornerstone of modern-day data communications. In the quantum-limited regime of lasercom, where the received optical signal power is small, e.g., in deep-space communications, pre-detection quantum domain collective processing of blocks of received signal pulses corresponding to communication codewords can provide enhanced communication capacity. We present a novel quantum receiver design methodology based on a quantum belief propagation algorithm that attains such enhancement. I will discuss the...

Topological Spintronics

Nitin Samarth
Monday, November 22, 2021 - 3:30pm

A Pitt/CMU Physics Colloquium

Abstract: The past decade has witnessed an explosion of activity in exploring the properties of topological quantum materials whose band structure has interesting features arising from the nexus of topology, spin-orbit coupling, and fundamental symmetries. A key characteristic of the band structure in many of these materials is the ‘spin-momentum correlation’ in helical Dirac states. This leads to the notion of ‘topological spintronics’ devices that seek to exploit efficient spin-charge interconversion for low power, non-...

Singh Named Special Assistant for Quantum Education

  • By Jennifer Zheng
  • 9 November 2021

Congratulations to Chandralekha Singh, who has been selected as special assistant to the provost for quantum education. 

In her new role, Singh will work to develop undergraduate and graduate programs in quantum science, convening a committee of faculty members from across the University who share interests in quantum science and contribute to our Quantum Science Initiative. 

Cudd said in her announcement that, “The importance of quantum science has emerged as a space that is key to Pitt’s academic and research portfolios...

Continuous Single-Shot Detection of Quasiparticle Trapping

Eli Levenson-Falk
Tuesday, November 16, 2021 - 3:00pm

A Pitt Physics seminar

Register: https://pitt.zoom.us/meeting/register/tJAlcOqgpz4vE9EIq_rfZx-3-ap9ZA4qPK8r

Abstract: Superconducting quantum circuits are plagued by nonequilibrium populations of quasiparticle excitations. These quasiparticles can cause relaxation and spurious excitation of qubit states, producing errors in a quantum algorithm, and can cause correlated errors that are particularly difficult to address with error...

Thwarting Counterfeiting with Programmable Hardware

  • By Jennifer Zheng
  • 26 October 2021

Susan FullertonKe Xu, and their colleague, Eric Beckman, recently received a $553,482 NSF grant for their project titled “Ion-Locked Polymorphic Electronics for Hardware Security.” 

Hardware and intellectual property piracy costs the U.S. billions of dollars every year. One promising solution to this issue is polymorphic electronics, or circuits that can be reprogrammed on-the-fly, thereby obscuring their true functionality until they are ready to be used. However, current approaches involve . . . 

Strong Interactions, Color Confinement, and Strings

Igor Klebanov
Monday, October 25, 2021 - 3:30pm

A Pitt/CMU Colloquium 

Abstract: In the 1950s and 60s many strongly interacting particles were discovered. String theory was originally invented to describe them, but Quantum Chromodynamics (QCD) emerged as the precise theory of the strong nuclear force. A quarter century later it was understood that string theory and certain gauge theories akin to QCD are different descriptions of the same physics. I will review the relations between gauge theories and strings. Their formation in QCD is a manifestation of the confinement of colored quarks and gluons. While...

Quantum Faculty Positions Open in Pittsburgh

  • By Jennifer Zheng
  • 19 October 2021

Looking for a faculty position in quantum science? We’ve got you covered! The University of Pittsburgh is looking for an Assistant Professor of Chemistry, and Carnegie Mellon University has openings for an Assistant Professor of Materials Science and Engineering (Electronic Materials), a faculty position in Experimental Condensed Matter Physics, and a faculty position in Theoretical Condensed Matter Physics.