Home > Press > UCSB Physicists Demonstrate the Quantum von Neumann Architecture, a Quantum Processor, and a Quantum Memory on a Chip
 |
The quantum von Neumann machine: Two qubits are coupled to a quantum bus, realizing a quCPU. Each qubit is accompanied by a quantum memory as well as a zeroing register. The quantum memories together with the zeroing register realize the quRAM.
Credit: Peter Allen, UCSB |
Abstract:
A new paradigm in quantum information processing has been demonstrated by physicists at UC Santa Barbara. Their results are published in this week's issue of Science Express online.
UCSB Physicists Demonstrate the Quantum von Neumann Architecture, a Quantum Processor, and a Quantum Memory on a Chip
Santa Barbara, CA | Posted on September 1st, 2011
UCSB physicists have demonstrated a quantum integrated circuit that implements the quantum von Neumann architecture. In this architecture, a long-lived quantum random access memory can be programmed using a quantum central processing unit, all constructed on a single chip, providing the key components for a quantum version of a classical computer.
The UCSB hardware is based on superconducting quantum circuits, and must be cooled to very low temperatures to display quantum behavior. The architecture represents a new paradigm in quantum information processing, and shows that quantum large-scale-integration is within reach.
The quantum integrated circuit includes two quantum bits (qubits), a quantum communication bus, two bits of quantum memory, and a resetting register comprising a simple quantum computer. "Computational steps take a few billionths of a second, comparable to a classical computer, but the great power is that a quantum computer can perform a large number of calculations simultaneously," said Matteo Mariantoni, postdoctoral fellow in the Department of Physics. "In our new UCSB architecture we have explored the possibility of writing quantum information to memory, while simultaneously performing other quantum calculations.
"On the quantum von Neumann architecture, we were able to run the quantum Fourier transform and a three-qubit Toffoli gate -- key quantum logic circuits for the further development of quantum computing," said Mariantoni.
The UCSB experiment was pursued primarily by Mariantoni, under the direction of Andrew N. Cleland and John M. Martinis, both professors of physics. Mariantoni was supported in this work by an Elings Prize Fellowship in Experimental Science from UCSB's California NanoSystems Institute.
####
For more information, please click here
Contacts:
Gail Gallessich
(805)-893-7220
Matteo Mariantoni
(805) 893-5218
+39-338-7169569
skype name: matteo.mariantoni
Andrew Cleland
(805) 893-5401
John Martinis
(805) 893-3910
Copyright © UC Santa Barbara
If you have a comment, please
Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
News and information
Conference Scheduled June 5-7 on Safe Use of Nanotechnology in Environmental Remediation May 23rd, 2013
Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013
Chip Technology
Researchers Stitch Defects into the World’s Thinnest Semiconductor May 22nd, 2013
Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013
Imec and GLOBALFOUNDRIES collaborate to advance high-density memory technology: STT-MRAM offers enhanced performance and scalability for embedded and standalone applications May 21st, 2013
Penn engineers' nanoantennas improve infrared sensing May 20th, 2013
Memory Technology
IDTechEx launches online Market Intelligence Portal May 23rd, 2013
Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013
Imec and GLOBALFOUNDRIES collaborate to advance high-density memory technology: STT-MRAM offers enhanced performance and scalability for embedded and standalone applications May 21st, 2013
RUB physicists let magnetic dipoles interact on the nanoscale for the first time: 'Of great technical interest for future hard disk drives' May 15th, 2013
Quantum Computing
Harris & Harris Group Notes the Sale of a Second D-Wave Quantum Computer May 16th, 2013
Cold atoms for quantum technology May 12th, 2013
Flawed Diamonds Promise Sensory Perfection: Berkeley Lab researchers and their colleagues extend electron spin in diamond for incredibly tiny magnetic detectors May 10th, 2013
New magnetic graphene may revolutionize electronics May 10th, 2013
Discoveries
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013
Bacterial spare parts filter antibiotic residue from groundwater May 22nd, 2013
UofL scientists uncover how grapefruits provide a secret weapon in medical drug delivery May 22nd, 2013
Announcements
Conference Scheduled June 5-7 on Safe Use of Nanotechnology in Environmental Remediation May 23rd, 2013
Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013