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Chaining Atoms Together Yields Quantum Storage

02-17-22

Engineers at Caltech have developed an approach for quantum storage that could help pave the way for the development of large-scale optical quantum networks. "The ability to build a technology reproducibly and reliably is key to its success," says graduate student Andrei Ruskuc. "In the scientific context, this let us gain unprecedented insight into microscopic interactions between ytterbium qubits and the vanadium atoms in their environment." The new system relies on nuclear spins—the angular momentum of an atom's nucleus—oscillating collectively as a spin wave. This collective oscillation effectively chains up several atoms to store information. "Based on our previous work, single ytterbium ions were known to be excellent candidates for optical quantum networks, but we needed to link them with additional atoms. We demonstrate that in this work," says Andrei Faraon, Professor of Applied Physics and Electrical Engineering. [Read the paper] [Caltech story]

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EAS Remembers Noel Corngold

02-10-22

Noel Corngold, Professor of Applied Physics, Emeritus, passed away on January 24. He was 93 years old. Corngold was born in New York City in 1929. He received his bachelor's degree from Columbia College in 1949; followed by his master's degree and doctorate from Harvard University in 1950 and 1954, respectively. He worked at Brookhaven National Laboratory in New York for 12 years before joining Caltech's faculty in 1966. Corngold was a professor of applied science studying nuclear engineering until 1974, when he joined the newly created applied physics option. As a professor of applied physics, he extended his research to include radiation transport, plasma physics, and the statistical mechanics of fluids. As a nuclear engineer, he conducted award-winning theoretical work on how neutrons behave in reactors. He was elected to the American Nuclear Society (ANS) in 1966 and awarded a certificate of merit from the society's Reactor Physics Division for his "physical insight into neutronic problems." He received the society's Eugene P. Wigner Reactor Physics Award in 2002 and its Arthur Holly Compton Award in Education in 2006. Corngold became an emeritus professor in 2002. [Caltech story]

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Professor Mirhosseini Receives Okawa Foundation Research Grant

02-09-22

Mohammad Mirhosseini, Assistant Professor of Electrical Engineering and Applied Physics, has been selected as a recipient of 2021 Okawa Foundation Research Grant for developing optical interconnects for microwave quantum processors. [Research Grant Recipients]

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Nano-architected Material Refracts Light Backward—An Important Step Toward One Day Creating Photonic Circuits

02-01-22

A newly created nano-architected material exhibits a property that previously was just theoretically possible: it can refract light backward, regardless of the angle at which the light strikes the material. "Negative refraction is crucial to the future of nanophotonics, which seeks to understand and manipulate the behavior of light when it interacts with materials or solid structures at the smallest possible scales," says Julia R. Greer, Ruben F. and Donna Mettler Professor of Materials Science, Mechanics and Medical Engineering; Fletcher Jones Foundation Director of the Kavli Nanoscience Institute. [Caltech story]

Tags: APhMS research highlights MedE MCE Harry Atwater Julia Greer Victoria Chernow Siying Peng Ryan Ng

New Caltech Center for Sensing to Intelligence (S2I) Launches Collaboration with Industry Partner

12-02-21

The Caltech Center for Sensing to Intelligence (S2I) has announced that, in collaboration with Rockley Photonics, a photonics-based health monitoring and communications solutions company, it will allocate $1.5 million in research grants over the next three years to jumpstart efforts to combine sensors with artificial intelligence. "We would like to have sensors in every device these days, generating a huge amount of data," says Azita Emami, Andrew and Peggy Cherng Professor of Electrical Engineering and Medical Engineering and the director of S2I. "But it's difficult to extract the most important information from the mountains of data they create." [Caltech story]

Tags: APhMS EE Changhuei Yang MedE CMS Azita Emami CNS Animashree Anandkumar Alireza Marandi Katie Bouman

Harry Atwater Elected Optica Fellow

11-08-21

Harry Atwater, Otis Booth Leadership Chair, Division of Engineering and Applied Science; Howard Hughes Professor of Applied Physics and Materials Science; Director, Liquid Sunlight Alliance, has been elected as Optica Fellow. Since 1959, over 2,800 members have joined the ranks of Fellow. These members have served with distinction in the advancement of optics and photonics through distinguished contributions to education, research, engineering, business and society. [Elected Fellows]

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Joseph Falson Named William H. Hurt Scholar

11-05-21

A $75 million gift from the late William (Bill) H. Hurt has established a suite of endowed early-career professorships that brings young faculty together to collaborate, build connections across disciplines, and engage in research and teaching that has the potential to define new fields of study, develop technologies, and advance innovative solutions to address the greatest challenges of the day. Joseph Falson, Assistant Professor of Materials Science, is among four faculty members who make up the inaugural cohort of William H. Hurt Scholars. William H. Hurt Scholars receive unrestricted funding and gain a network of colleagues with whom they will interact through programming designed to catalyze new research ideas and collaborations. [Caltech story]

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Harry Atwater Receives Von Hippel Award

11-02-21

Harry Atwater, Otis Booth Leadership Chair, Division of Engineering and Applied Science; Howard Hughes Professor of Applied Physics and Materials Science; Director, Liquid Sunlight Alliance, received the 2021 Von Hippel Award, the Materials Research Society’s (MRS) highest honor. Atwater is being recognized “for fundamental research in light-matter interactions—particularly nanophotonics, plasmonics, photonic metamaterials, and solar energy conversion—and numerous applications of photon control of materials illustrating the value of fundamental research to technologies that improve the quality of life.” The Von Hippel Award recognizes those qualities most prized by materials scientists and engineers—brilliance and originality of intellect, combined with vision that transcends the boundaries of conventional scientific disciplines, as exemplified by the life of Arthur von Hippel. [MRS story]

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Caltech and Amazon Partner to Create New Hub of Quantum Computing

10-26-21

This past year, a new two-story building took shape in the northeast corner of the Caltech campus. Though modest in design, what takes place inside the structure could transform the future of computing. The building is the AWS Center for Quantum Computing, the result of a partnership between Caltech and Amazon Web Services, the cloud-computing branch of Amazon. The goal of the collaboration is to create quantum computers and related technologies that have the potential to revolutionize data security, machine learning, medicine development, sustainability practices, and more. "AWS will benefit from the ideas percolating here on campus," says Oskar Painter, John G. Braun Professor of Applied Physics and Physics and head of quantum hardware at AWS. Painter says quantum computing is still a very young technology, so it is crucial for development efforts to be directly connected to the latest research in academia. [Caltech story]

Tags: APhMS CMS Oskar Painter KNI Fernando Brandão

Controlling Light with a Material Three Atoms Thick

10-22-21

Scientists can control light more precisely than ever with a material only three atoms thick and constructed from so-called black phosphorous. In the lab of Harry Atwater, Otis Booth Leadership Chair, Division of Engineering and Applied Science; Howard Hughes Professor of Applied Physics and Materials Science; Director, Liquid Sunlight Alliance, three layers of phosphorous atoms were used to create a material for polarizing light that is tunable, precise, and extremely thin. Black phosphorous tech could revolutionize telecommunications by vastly improving light signals sent through fiber-optic cables. The technology could also open the door to a light-based replacement for Wi-Fi, something researchers in the field refer to as Li-Fi. "Increasingly, we're going to be looking at light-wave communications in free space," Atwater says. "Lighting like this very cool-looking lamp above my desk doesn't carry any communication signal. It just provides light. But there's no reason that you couldn't sit in a future Starbucks and have your laptop taking a light signal for its wireless communication rather than a radio signal. It's not quite here yet, but when it gets here, it will be at least a hundred times faster than Wi-Fi." [Caltech story]

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