2021 New's Items

Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn5

Maksimovic N
Eilbott D
Lanzara A
Analytis JG
2021

The study of quantum phase transitions that are not clearly associated with broken symmetry is a major effort in condensed matter physics, particularly in regard to the problem of high-temperature superconductivity, for which such transitions are thought to underlie the mechanism of superconductivity itself. Here we argue that the putative quantum critical point in the prototypical unconventional superconductor CeCoIn5 is characterized by the delocalization of electrons in a transition that connects two Fermi surfaces of different volumes, with no apparent...

AQT Director Irfan Siddiqi Featured At Nature Reviews Materials

September 23, 2021

QT Director Irfan Siddiqi was featured at the Nature Reviews Materials journal with his paper titled “Engineering High-Coherence Superconducting Qubits." What does it take to engineer superconducting qubits with improved coherence times for quantum computing? What limits the computational power of superconducting qubits and processors? These are some of the questions addressed in the review and the path forward.

Continue reading the publication directly on the journal's...

AQT's Fireside Chat Featured in The Quantum Daily and HPCWire

October 26, 2021

Last week, Irfan Siddiqi led a “fireside chat” with a few media and analysts to introduce the Department of Energy’s relatively new Advanced Quantum Testbed (AQT), which is based at Lawrence Berkeley National Laboratory. AQT is one of two DOE quantum testbeds working with commercial and academic researchers and (broadly) with the new National Quantum Information Sciences (QIS) Research Centers, which were created under the National Quantum Initiative Act (NQIA, 2018).

Siddiqi is the director of the AQT which focuses on...

Irfan Siddiqi is the 2021 recipient of the Joseph F. Keithley Award

October 7, 2020

Citation:

"For fundamental advances in superconducting parametric amplifiers, including the development of the Josephson traveling wave parametric amplifier, and for their application to quantum measurement and control."

Background:

Irfan Siddiqi is a Professor of Physics at the University of California, Berkeley, and a faculty scientist at Lawrence Berkeley National Laboratory (LBNL). He is the director of the Quantum Systems Accelerator (...

Crucial Leap in Error Mitigation for Quantum Computers

December 9, 2021

Researchers at Lawrence Berkeley National Laboratory’s Advanced Quantum Testbed (AQT) demonstrated that an experimental method known as randomized compiling (RC) can dramatically reduce error rates in quantum algorithms and lead to more accurate and stable quantum computations. No longer just a theoretical concept for quantum computing, the multidisciplinary team’s breakthrough experimental results are published in...

Omar Yaghi Awarded the Inaugural VinFuture Special Prize

January 24, 2021

The first VinFuture Special Prize for Innovators with Outstanding Achievements for Emerging Fields was awarded to Professor Omar M. Yaghi for the discovery of metal-organic frameworks (MOFs).

Professor Yaghi has been awarded this prize for scientific advancement with his pioneering work on the discovery and development of metal-organic framework and covalent organic framework materials which have the potential to improve the everyday lives of millions of people.

In 1995, Prof. Yaghi reported the successful preparation and crystallization of the first strongly-bonded...

Technique Tunes Into Graphene Nanoribbons’ Electronic Potential

December 22, 2021

Ever since graphene – a thin carbon sheet just one-atom thick – was discovered more than 15 years ago, the wonder material became a workhorse in materials science research. From this body of work, other researchers learned that slicing graphene along the edge of its honeycomb lattice creates one-dimensional zigzag graphene strips or nanoribbons with exotic magnetic properties.

Many researchers have sought to harness nanoribbons’ unusual magnetic behavior into carbon-based, spintronics devices that enable high-speed, low-power data storage and information...

Plants do the wave

November 29, 2021

Photosynthesis, from the Greek words for “light” and “putting together,” is the foundation for life as we know it. Photosynthesis is the reason our skies are blue and our forests are green, and plant-based agriculture is essential to human civilization. According to the traditional understanding of photosynthesis, the sun sends light to Earth, and this light is absorbed by light-harvesting complexes made of chlorophyll—the molecules that make leaves green. The energy is then transferred from one chlorophyll to another until it reaches the reaction center, where the energy from the sun is...

Peidong Yang elected Foreign Academician of the Chinese Academy of Sciences

November 22, 2021

The College is pleased to announce that Peidong Yang, the S.K. and Angela Chan Distinguished Professor of Energy and Professor of Chemistry, has been elected a Foreign Academician of the Chinese Academy of Sciences(link is external) (Academy). The Academy also named Steven Louie, UC Berkeley Professor of Physics, to this year's foreign cohort. Professor Yang is the first member of the College to be elected...