In quantum computing, a charge qubit is a qubit whose basis states are charge states. In superconducting quantum computing, a charge qubit is formed by a tiny superconducting island coupled by a Josephson junction to a superconducting reservoir. The state of the qubit is determined by the number of Cooper pairs that have tunneled across the junction. In contrast with the charge state of an atomic or molecular ion, the charge states of such an "island" involve a macroscopic number of conduction electrons of the island. The quantum superposition of charge states can be achieved by tuning the gate voltage U that controls the chemical potential of the island. The charge qubit is typically read-out by electrostatically coupling the island to an extremely sensitive electrometer such as the radio-frequency single-electron transistor.
John (Jean) Iliopoulos is a Greek physicist. He is the first person to present the Standard Model of particle physics in a single report. He is best known for his prediction of the charm quark with Sheldon Glashow and Luciano Maiani. Iliopoulos is also known for demonstrating the cancellation of anomalies in the Standard model. He is further known for the Fayet-Iliopoulos D-term formula, which was introduced in 1974. He is currently an honorary member of Laboratory of theoretical physics of École Normale Supérieure, Paris.
In quantum computing, and more specifically in superconducting quantum computing, a transmon is a type of superconducting charge qubit designed to have reduced sensitivity to charge noise. The transmon was developed by Robert J. Schoelkopf, Michel Devoret, Steven M. Girvin, and their colleagues at Yale University in 2007. Its name is an abbreviation of the term transmission line shunted plasma oscillation qubit; one which consists of a Cooper-pair box "where the two superconductors are also [capacitively] shunted in order to decrease the sensitivity to charge noise, while maintaining a sufficient anharmonicity for selective qubit control".
Jean-Loup Gervais is a French theoretical physicist.
Vincent Rivasseau is a French mathematical physicist.
Dmitri E. Kharzeev is an American theoretical physicist most notable for his work on the chiral magnetic effect.
Michel Devoret is a French physicist and F. W. Beinecke Professor of Applied Physics at Yale University. He also holds a position as the Director of the Applied Physics Nanofabrication Lab at Yale. He is known for his pioneering work on macroscopic quantum tunneling, and the single-electron pump as well as in groundbreaking contributions to initiating the fields of circuit quantum electrodynamics and quantronics.
Yasunobu Nakamura (中村 泰信 Nakamura Yasunobu) is a Japanese physicist. He is a professor at the University of Tokyo's Research Center for Advanced Science and Technology (RCAST) and the Principal Investigator of the Superconducting Quantum Electronics Research Group (SQERG) at the Center for Emergent Matter Science (CEMS) within RIKEN. He has contributed primarily to the area of quantum information science, particularly in superconducting quantum computing and hybrid quantum systems.
Irfan Siddiqi is an American physicist and currently a professor of physics at the University of California, Berkeley and a faculty scientist at Lawrence Berkeley National Laboratory (LBNL). He currently is the director of the Quantum Nanoelectronics Laboratory at UC Berkeley and the Advanced Quantum Testbed at LBNL. Siddiqi is known for groundbreaking contributions to the field of superconducting quantum circuits, including dispersive single-shot readout of superconducting quantum bits, quantum feedback, observation of single quantum trajectories, and near-quantum limited microwave frequency amplification. In addition to other honors, for his pioneering work in superconducting devices, he was awarded with the American Physical Society George E. Valley, Jr. Prize in 2006, "for the development of the Josephson bifurcation amplifier for ultra-sensitive measurements at the quantum limit." Siddiqi is a fellow of the American Physical Society and a recipient of the UC Berkeley Distinguished Teaching Award in 2016.
Andreas Wallraff is a German physicist who conducts research in quantum information processing and quantum optics. He has taught as a professor at ETH Zürich in Zürich, Switzerland since 2006. He worked as a research scientist with Robert J. Schoelkopf at Yale University from 2002 to 2005, during which time he performed experiments in which the coherent interaction of a single photon with a single quantum electronic circuit was observed for the first time. His current work at ETH Zürich focuses on hybrid quantum systems combining superconducting electronic circuits with semiconductor quantum dots and individual Rydberg atoms as well as quantum error correction with superconducting qubits.
Julia Kempe is a French, German, and Israeli researcher in quantum computing. She is currently the Director of the Center for Data Science at NYU and Professor at the Courant Institute.
Serge Galam is a French physicist and Scientist Emeritus at CNRS.
Ursula Rita Bassler was the President of the CERN Council from 2019 to 2021, and former deputy director of National Institute of Nuclear and Particle Physics (IN2P3), CNRS.
Alessandra Lanzara is an Italian-American physicist and the distinguished Charles Kittel Professor of physics at the University of California, Berkeley since 2002, where she leads an experimental materials physics group. She is the founding director of Center for Sustainable Innovation at UCB and the co-founder of Quantum Advanced Detection (QUAD) LLC.
John M. Martinis is an American physicist and a professor of physics at the University of California, Santa Barbara. In 2014, the Google Quantum A.I. Lab announced that it had hired Martinis and his team in a multimillion dollar deal to build a quantum computer using superconducting qubits.
Claude Bouchiat was a French physicist, and a member of the French Academy of sciences.
Hélène Bouchiat is a French condensed matter physicist specializing in mesoscopic physics and nanoscience. She is a director of research in the French National Centre for Scientific Research (CNRS), associated with the Laboratoire de Physique des Solides at Paris-Sud University. Topics in her research include supercurrents, persistent currents, graphene, carbon nanotubes, and bismuth-based topological insulators.
Marie-Anne Bouchiat-Guiochon is a French experimental atomic physicist whose research has included studies of neutral currents, parity violation, and hyperpolarization. She is an honorary director of research for the French National Centre for Scientific Research (CNRS).
Elisabeth Giacobino is a French physicist specialized in laser physics, nonlinear optics, quantum optics and super-fluidity. She is one of the pioneers of quantum optics and quantum information. She graduated from Pierre and Marie Curie University and started working at the French National Centre for Scientific Research, where she has spent the majority of her professional career. She has been an invited professor at New York University and University of Auckland. She has over 230 publications and over 110 invited presentations in international conferences. She has been the coordinator of four European projects and is a member of Academia Leopoldina as well as a fellow member of the European Physical Society, the European Optical Society and the Optical Society of America.
Astrid Lambrecht is a German physicist who is Director at Forschungszentrum Jülich. She previously worked as the Deputy Director of the French National Centre for Scientific Research Institute of Physics.
