AQC 2016 - Building Quantum Annealer v2.0

Channel:
United States Google TechTalks
Subscribers:
349,000
Published on ● Video Link: https://www.youtube.com/watch?v=QfTkf3SqyFo


Duration: 31:03
1,429 views
19

A Google TechTalk, June 28, 2016, presented by Yu Chen (Google)
ABSTRACT: Quantum annealer, constructed from an array of coupled flux qubits, represents an analog approach to build a quantum computer. In Quantum A.I. Lab, we are working on building an enhanced-performance quantum annealer - quantum annealer v2.0. We introduce the "fluxmon" flux qubit as the building block of quantum annealer v2.0. With the capacitance and inductance provided by a coplanar waveguide, the fluxmon qubit design balances between coherence and coupling. Utilizing a microwave control and readout, we were able to characterize single-qubit performance and discovered that the qubit decoherence is dominated by 1/f flux noise over a wide range of frequencies. Meanwhile, with the linear inductance distributed over a macroscopic length scale, we discuss that the fluxmon design allows for GHz-scale coupling for multiple qubits, suitable for highly connected annealer architectures.

Presented at the Adiabatic Quantum Computing Conference, June 26-29, 2016, at Google's Los Angeles office.



Other Videos By Google TechTalks


2016-10-20AQC2016 - Classical Modeling of Quantum Tunneling
2016-10-20AQC 2016 - Adiabatic Quantum Computer vs. Diffusion Monte Carlo
2016-10-20AQC 2016 - Floquet Quantum Annealing with Superconducting Circuit
2016-10-20AQC 2016 - Simulated Annealing Comparison Between All-to-All Connectivity Schemes
2016-10-20AQC 2016 - Parity Adiabatic Quantum Computing
2016-10-20AQC 2016 - Towards Quantum Supremacy with Pre-Fault-Tolerant Devices
2016-10-20AQC 2016 - Scaling Analysis & Instantons for Thermally-Assisted Tunneling and Quantum MC Simulations
2016-10-20AQC 2016 - The Quantum Spin Glass Transition on the Regular Random Graph
2016-10-20AQC 2016 - A Fully-Programmable Measurement-Feedback OPO Ising Machine with All-to-All Connectivity
2016-10-20AQC 2016 - Origin and Suppression of 1/f Magnetic Flux Noise
2016-10-20AQC 2016 - Building Quantum Annealer v2.0
2016-10-20AQC 2016 - Roadmap for Building a Quantum Computer
2016-10-20AQC 2016 - Driving Spin Systems with Noisy Control Fields: Limits to Adiabatic Protocol
2016-10-20AQC 2016 - An Optimal Stopping Approach for Benchmarking Probabilistic Optimizers
2016-10-20AQC 2016 - Quantum Annealing via Environment-Mediated Quantum Diffusion
2016-10-20AQC 2016 - Inhomogeneous Quasi-adiabatic Driving of Quantum Critical Dynamics
2016-10-20AQC 2016 - Quantum Monte Carlo vs Tunneling vs. Adiabatic Optimization
2016-10-20AQC 2016 - Simulated Quantum Annealing Can Be Exponentially Faster Than Classical
2016-10-20AQC 2016 - Quantum Monte Carlo Simulations and Quantum Annealing
2016-10-20AQC - 2016 Quantum vs. Classical Optimization - A Status Report on the Arms Race
2016-10-20AQC 2016 - What is the Computational Value of Finite Range Tunneling?


Tags:
google techtalk
quantum computing