Modular Universal Scalable Ion-trap Quantum Computer


Multi-institution collaboration to develop a scalable quantum computer based on ion trap arrays connected by photons. The Brown lab is performing experiments on ion trap arrays and developing a simulator for the complete system. Project funded by IARPA MQCO program through ARO grant W911NF-10-1-0231.

Collaborators
Jungsang Kim Duke University
Chris Monroe University of Maryland
Luming Duan University of Michigan
Robert Raussendorf University of British Columbia
Boris Blinov University of Washington
Dave Bacon University of Washington
QIS Group GTRI
Sandia
MagiQ

Cold Molecular Ions

Laser cooled atomic ions can be used to cool molecular ions to temperatures less than 1 millikelvin. The Brown lab is studying the spectroscopy and reaction dynamics of molecules at these low temperatures. This work is funded by the ARO under contract W911NF-12-1-0230.

Collaborators
Brian Odom Northwestern University
David Sherrill Georgia Institute of Technology

Quantum Information for Quantum Chemistry

As part of a Center for Chemical Innovation, the Brown lab is using the tools from quantum information to build new experiments and algorithms for physical chemistry. The CCI is funded by the National Science Foundation (CHE-1037992).

Collaborators
Sabre Kais Purdue University
Alán Aspuru-Guzik Harvard University
Peter Love Haverford College
Daniel Lidar University of Southern California

Optimal Resources and Architectures for Quantum aLgorithms (ORAQL)

The Brown lab is leading a multi-institution collaboration to develop a suite of software tools for estimating and optimizing the resource cost of performing a quantum algorithm on a real physical system. Project funded by the IARPA QCS program through DOI contract D11PC20167.

Collaborators
Physis of Information Group at IBM Research
Fred Chong UC Santa Barbara
John Kubiatowicz UC Berkeley
Aram Harrow University of Washington
Jungsang Kim Duke University
Isaac Chuang MIT
Lorenza Viola Dartmouth College
Robert Raussendorf University of British Columbia
David Poulin Université de Sherbrooke
The Quantum Information Systems Group at GTRI

Publications

Large scale modular quantum computer architecture with atomic memory and photonic interconnects
C. Monroe, R. Raussendorf, A. Ruthven, K. R. Brown, P. Maunz, L.-M. Duan, and J. Kim
arXiv:1208.0391 (2012)

Approximation of real error channels by Clifford channels and Pauli measurements
M. Gutiérrez, L. Svec, A. Vargo, and K. R. Brown
arXiv:1207.0046 (2012)

Progress in compensating pulse sequences for quantum computation
J. T. Merrill, and K. R. Brown
arXiv:1203.6392 (2012)

Topological subsystem codes from graphs and hypergraphs
P. Sarvepalli, and K. R. Brown
Phys. Rev. A 86, 042336 (2012)

Demonstration of integrated microscale optics in surface-electrode ion traps
J. T. Merrill, C. Volin, D. Landgren, J. M. Amini, K. Wright, S. C. Doret, C-S. Pai, H. Hayden, T. Killian, D. Faircloth, K. R. Brown, A. W. Harter, and R. E. Slusher
New J. Phys. 13, 103005 (2011)

Challenges of laser-cooling molecular ions
J. H. V. Nguyen, C. R. Viteri, E. G. Hohenstein, C. D. Sherrill, K. R. Brown, and B. Odom
New J. Phys. 13, 063023 (2011)

Analytical solution of thermal magnetization on memory stabilizer structures
Y. Tomita, C. R. Viteri, and K. R. Brown
Phys. Rev. A 82, 042303 (2010)

Making classical ground-state spin computing fault-tolerant
I. J. Crosson, D. Bacon, and K. R. Brown
Phys. Rev. E 82, 031106 (2010)

Detection of single ion spectra by Coulomb crystal heating
C. R. Clark, J. E. Goeders, Y. K. Dodia, C. R. Viteri, and K. R. Brown
Phys. Rev. A 81, 043428 (2010)

Multi-qubit compensation sequences
Y. Tomita, J. T. Merrill, and K. R. Brown
New J. Phys. 12, 015002 (2010)

Monte Carlo analysis of critical phenomenon of the Ising model on memory stabilizer structures
C. R. Viteri, Y. Tomita, and K. R. Brown
Phys. Rev. A 80, 042313 (2009)

Design and characterization of a planar trap
U. Tanaka, R. Naka, F. Iwata, T. Ujimaru, K. R. Brown,
I. L. Chuang, and S. Urabe
J. Phys. B: At. Mol. Opt. Phys. 42, 154006 (2009)

Resource requirements for fault-tolerant quantum simulation: the transverse Ising model ground state
C. R. Clark, T. S. Metodi, S. D. Gasster, and K. R. Brown
Phys. Rev. A 79, 062314 (2009)

Energy protection arguments fail in the interaction picture
K. R. Brown
Phys. Rev. A 76, 022327 (2007)