Quantum information processing using superconducting qubits

2014 Fiscal Year Final Research Report

• Project/Area Number: 22224007
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: NORI FRANCO 独立行政法人理化学研究所, 創発物性科学研究センター, グループディレクター (50415262)
• Co-Investigator(Kenkyū-buntansha): MARUYAMA Koji RIKEN, Asi, Researcher (00425646) ; SAHEL Ashhab RIKEN, Cems, Researcher (40469903)
• Co-Investigator(Renkei-kenkyūsha): LAMBERT Neill RIKEN, Cems, Researcher (80525915) ; BLIOKH Konstantin RIKEN, Cems, Researcher (00724840) ; JOHANSSON Robert RIKEN, iTHES, Researcher (10596597) ; CUI Wei RIKEN, Cems, Researcher (30625653) ; ISHIDA Natsuko RIKEN, Cems, Researcher (90708520)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: Artificial Atoms / Quantum nano-devices / Superconducting qubits / Inter-disciplinary / Heterogeneous / Hysbrid quantum circuits / Computational studies

Outline of Final Research Achievements

We studied superconducting (SC) qubits as “Artifical Atoms” and asked similar questions researchers have asked for natural atoms (including how these “giant atoms” interact with light, transmission lines, electro-magnetic resonators, mechanical resonators, etc.). We theoretically studied the interdisciplinary field involving quantum optics, atomic physics, condensed matter physics, nanoscience, and computer science. These types of problems include how photons interact with qubits, lasing phenomena using superconducting qubits; single-photon generators; photon-number control (Fock state generation); coupling qubits by a resonator; coupling resonators by a qubit; and also quantum measurements. This is a growing interdisciplinary area of research. We obtained many interesting results, which were featured in top physics journals.

Free Research Field

理論物理学