M.T. Bell et al., Quantum Superinductor with Tunable Non-Linearity, Phys. Rev. Lett. 109, 137003 (2012). Many Josephson circuits intended for quantum computing.

Slides:



Advertisements
Similar presentations
Superconducting qubits
Advertisements

Emergent Majorana Fermion in Cavity QED Lattice
Mr. Brooks Foundations of Technology.  Students will: ◦ Develop an understanding of the relationships among technologies and connections with other fields.
Superinductor with Tunable Non-Linearity M.E. Gershenson M.T. Bell, I.A. Sadovskyy, L.B. Ioffe, and A.Yu. Kitaev * Department of Physics and Astronomy,
Small Josephson Junctions in Resonant Cavities David G. Stroud, Ohio State Univ. Collaborators: W. A. Al-Saidi, Ivan Tornes, E. Almaas Work supported by.
D-Wave Systems Inc. THE QUANTUM COMPUTING COMPANY TM A.M. Zagoskin (D-Wave Systems and UBC) Tunable coupling of superconducting qubits Quantum Mechanics.
Josephson Junctions, What are they?
Magnetic sensors and logic gates Ling Zhou EE698A.
Center for Quantum Information ROCHESTER HARVARD CORNELL STANFORD RUTGERS LUCENT TECHNOLOGIES Spin effects and decoherence in high-mobility Si MOSFETs.
UNIVERSITY OF NOTRE DAME Xiangning Luo EE 698A Department of Electrical Engineering, University of Notre Dame Superconducting Devices for Quantum Computation.
Coherence and decoherence in Josephson junction qubits Yasunobu Nakamura, Fumiki Yoshihara, Khalil Harrabi Antti Niskanen, JawShen Tsai NEC Fundamental.
In Search of a Magic Bottle of Error-Be-Gone Dave Bacon Caltech Department of Physics Institute for Quantum Information Decoherence errosol.
Equilibrium dynamics of entangled states near quantum critical points Talk online at Physical Review Letters 78, 843.
Holistic approach to mentoring (teaching and research) next-generation scientists & engineers J. Narayan Department of Materials Science and Engineering.
Superconducting Qubits Kyle Garton Physics C191 Fall 2009.
Dressed state amplification by a superconducting qubit E. Il‘ichev, Outline Introduction: Qubit-resonator system Parametric amplification Quantum amplifier.
Nanocrystallinity Engineering: Tailoring Properties and Functionalities of Metal Nanoparticles Min Ouyang, University of Maryland, DMR
P. Bertet Quantum Transport Group, Kavli Institute for Nanoscience, TU Delft, Lorentzweg 1, 2628CJ Delft, The Netherlands A. ter Haar A. Lupascu J. Plantenberg.
O AK R IDGE N ATIONAL L ABORATORY U.S. D EPARTMENT OF E NERGY Nanoscale Electronics / Single-Electron Transport in Quantum Dot Arrays Dene Farrell SUNY.
Strong spin-phonon coupling is responsible for a wide range of scientifically rich and technologically important phenomena—including multiferroic properties,
Thomas A. Pressley July 11, National Defense Education Act of 1958.
Insert Figure 1 approximately here. Bismuth nanowires or bismuth nanotubes? -Bismuth nanowires are a vehicle for the study of size- dependent electronic.
Chapter 23 Alternating Current Circuits Capacitors and Capacitive Reactance The resistance in a purely resistive circuit has the same value at all.
The Road to Quantum Computing: Boson Sampling Nate Kinsey ECE 695 Quantum Photonics Spring 2014.
NSF IGERT proposals Yang Zhao Department of Electrical and Computer Engineering Wayne State University.
Building the Europe of Knowledge Proposals for the 7 th Research Framework Programme
D.Giuliano (Cosenza), P. Sodano (Perugia) Local Pairing of Cooper pairs in Josephson junction networks Obergurgl, June 2010.
A magnetically-controlled superconducting switch Norman Birge, Michigan State University, DMR The interplay between superconductivity and ferromagnetism.
Anatoli Polkovnikov Krishnendu Sengupta Subir Sachdev Steve Girvin Dynamics of Mott insulators in strong potential gradients Transparencies online at
Nonlocal quantum coherence between normal probes placed on a superconductor is predicted to occur through two microscopic processes. In crossed Andreev.
Two Level Systems and Kondo-like traps as possible sources of decoherence in superconducting qubits Lara Faoro and Lev Ioffe Rutgers University (USA)
Surface state Dirac point Fermi level Bi 2 Se 3 GaAs Bi 2 Se 3 Background: During the past two years, studies involving topology have led to predictions.
Example: Magnetic field control of the conducting and orbital phases of layered ruthenates, J. Karpus et al., Phys. Rev. Lett. 93, (2004)  Used.
“Experimental quantum computers” or, the secret life of experimental physicists 1 – Qubits in context Hideo Mabuchi, Caltech Physics and Control & Dynamical.
Correlated Electron State in Ce 1-x Yb x CoIn 5 Stabilized by Cooperative Valence Fluctuations Brian M. Maple, University of California, San Diego, DMR.
Gang Shu  Basic concepts  QC with Optical Driven Excitens  Spin-based QDQC with Optical Methods  Conclusions.
Quantum Computing: An Overview for non-specialists Mikio Nakahara Department of Physics & Research Centre for Quantum Computing Kinki University, Japan.
Spectroscopy with a Twist Infrared magneto-polarization measurements John Cerne, University at Buffalo, SUNY, DMR Hall conductivity in the high.
From Local Moment to Mixed-Valence Regime in Ce 1−x Yb x CoIn 5 alloys Carmen Almasan, Kent State University, DMR Ce 1−x Yb x CoIn 5 alloys have.
Large scale quantum computing in silicon with imprecise qubit couplings ArXiv : (2015)
Spin-orbital effects in frustrated antiferromagnets Oleg A. Starykh, University of Utah, DMR Electron spin resonance (ESR) measures absorption.
Course, Curriculum, and Laboratory Improvement (CCLI) Transforming Undergraduate Education in Science, Technology, Engineering and Mathematics PROGRAM.
From quasi-2D metal with ferromagnetic bilayers to Mott insulator with G-type antiferromagnetic order in Ca 3 (Ru 1−x Ti x ) 2 O 7 Zhiqiang Mao, Tulane.
Room-Temperature Qubits for Quantum Computing PI: Saritha Nellutla, Department of Chemistry and Biochemistry, Florida State University PI: Gregory S. Boebinger,
Quantum Criticality in Magnetic Single-Electron Transistors T p Physics of non-Fermi-liquid Metals Qimiao Si, Rice University, DMR Quantum criticality.
Experimental Quantification of Entanglement in low dimensional Spin Systems Chiranjib Mitra IISER-Kolkata Quantum Information Processing and Applications.
Bulk Hybridization Gap and Surface Conduction in the Kondo Insulator SmB 6 Richard L. Greene, University of Maryland College Park, DMR Recently,
1 Department of Physics , University at Buffalo, SUNY APS March Meeting 2015 Phonon mediated spin relaxation in a moving quantum dot: Doppler shift, Cherenkov.
Theoretical Solid State Physics Marvin L. Cohen and Steven G. Louie, University of California at Berkeley, DMR Carbon nanotubes possess novel properties.
Magnetic Moments in Amorphous Semiconductors Frances Hellman, University of California, Berkeley, DMR This project looks at the effect of magnetic.
Tunable Electron-Phonon Coupling in Carbon Nanotubes Moonsub Shim, University of Illinois, DMR EFEF K. Nguyen, A. Gaur, & M. Shim, Phys. Rev. Lett.
Some Thoughts on Funding in the Nano Area Within the Physical Sciences Group - Jozef Spałek Institute of Physics, Jagiellonian University, Kraków, Poland.
CAREER: Position-Controlled Doping of Semiconductor Nanocrystals Y. Charles Cao, University of Florida, DMR Doping refers to the process of intentionally.
How are Liquid Crystals like Superconductors? Charles Rosenblatt, Case Western Reserve University, DMR Many seemingly different phase transitions.
Spin at the Nanoscale: Material Synthesis and Fundamental Physics Min Ouyang, University of Maryland – College Park, DMR In the FY08, we continued.
Thermodynamics and Transport in Iron-based superconductors Maxim G. Vavilov, University of Wisconsin-Madison, DMR Recent discovery of novel iron-pnictide.
Quantum dynamics in nano Josephson junctions Equipe cohérence quantique CNRS – Université Joseph Fourier Institut Néel GRENOBLE Wiebke Guichard Olivier.
Arnau Riera, Grup QIC, Dept. ECM, UB 16 de maig de 2009 Intoduction to topological order and topologial quantum computation.
Review on quantum criticality in metals and beyond
Superconducting Qubits
Single-molecule transistors: many-body physics and possible applications Douglas Natelson, Rice University, DMR (a) Transistors are semiconductor.
Quantum Phase Transition of Light: A Renormalization Group Study
Design and Realization of Decoherence-Free
Nonradiative Quantum Coherences in Semiconductors Hailin Wang, University of Oregon, DMR While storage of classical information is a well- established.
Strong coupling of a superradiant spin ensemble B. C. Rose, A. M
Majorana Spin Diagnostics
A near–quantum-limited Josephson traveling-wave parametric amplifier
Deformation of the Fermi surface in the
Observation of Majorana fermions in a ferromagnetic chains on a superconductor Princeton Center for Complex Materials (DMR ) Stevan Nadj-Perge,
Dynamics of a superconducting qubit coupled to quantum two-level systems in its environment Robert Johansson (RIKEN, The Institute of Physical and Chemical.
Presentation transcript:

M.T. Bell et al., Quantum Superinductor with Tunable Non-Linearity, Phys. Rev. Lett. 109, (2012). Many Josephson circuits intended for quantum computing would benefit from the realization of a “superinductor”: a decoherence-free element whose impedance exceeding the resistance quantum R Q =h/(2e) 2 at microwave frequencies. We have implemented the superinductor as a specially designed one-dimensional “ladder” of nanoscale Josephson junctions. The inductance of this micron-scale circuit, tunable by the magnetic field, can be as large as the inductance of a several- meters-long wire! The magnitude of the inductance and its non-linearity can be easily tuned by a weak magnetic field. These properties open new possibilities for the development of fault tolerant superconducting qubits and controllable coupling between qubits. Micrograph of the Josephson ladder: a chain of asymmetric dc-SQUID-like cells with several large Josephson junctions (JJs) in one branch shunted by a single small JJ in the other branch. Josephson junctions are formed at the intersections of sub-micron aluminum strips. t Rabi ~ 2.5 μs The Josephson ladder, being connected to a capacitor, operates as a qubit with a relatively long coherence time (> 2  s). The plot shows Rabi oscillations in a superinductor-based qubit. 1 Quantum Superinductors Michael Gershenson, Rutgers University New Brunswick, DMR

The impact of superinductors spreads well beyond the field of quantum computing. Due to the magnetic- field-tunable criticality, the Josephson ladders have potential to become a unique experimental platform for the study of the quantum phase transitions in one dimension (1D). The low-energy physics of the ladders can be mapped on the  4 model, which is relevant to a wide spectrum of physical phenomena, from quark confinement to ferromagnetism. Near the critical point this model shares many common features with the integrable model of a 1D Ising spin chain in the transverse magnetic field, which serves as a paradigm in the context of nonequilibrium thermodynamics and quantum critical phenomena. Our recent experiments show that the spectrum of low-energy excitations in these systems is consistent with the predictions for the Ising quantum critical model in which the excitations are described by emergent Majorana fermions. 2 Quantum Superinductors Michael Gershenson, Rutgers University New Brunswick, DMR

Broad Impact. The ideas generated in the course of this research will have a predictive power across a broad spectrum of fields, including physics and engineering. Within the physics sub-fields, our results advance the understanding of quantum phase transitions and decoherence in large closed quantum systems. The research is relevant to the nascent field of quantum computing that can be viewed as a battle field between the quantum behavior and emergent classicality. Development of fault-tolerant qubits is crucial for the practical implementation of quantum logical circuitry and, more generally, for the realization of novel ideas that will allow Nanoelectronics to maintain its progress beyond the era of Silicon Nanotechnology. The interdisciplinary science and technological components of this research project provide excellent educational opportunities for two graduate students, two undergrads, and one post-doc involved in this research. The multi-component Educational and Outreach Program, an essential part of the project, is designed to nurture an appreciation for nanoscience, and develop innovative curricula with a view of creating a more scientifically literate general public. The PI is a member of the team of Rutgers instructors working on transformative changes in large introductory science courses. The goal is to replace the traditional (passive) format of large lecture courses with the evidence-based teaching methods and interactive and collaborative formats that would promote the interactive learning environment and lead to better learning outcomes. 3 Quantum Superinductors Michael Gershenson, Rutgers University New Brunswick, DMR