IARPA in the News
Valleytronics Qubits Travel in Graphene
...Another way to store qubits is in traps where quantum information is encoded on ion atoms by lasers. Georgia Tech Research Institute and Honeywell International demonstrated this week a new ion-trap architecture that multiplies by the number of ion traps a chip can hold. The qubits contained in the traps and read and written with scanning lasers.
The researchers said their new micro-fabrication technique also had applications in making other atomic-scale devices such as sensors, magnetometers and chip-scale atomic clocks.
Funding was provided by the U.S. Intelligence Advanced Research Projects Activity (IARPA) program.
Ball-grid array architecture for microfabricated ion traps
State-of-the-art microfabricated ion traps for quantum information research are approaching nearly one hundred control electrodes. We report here on the development and testing of a new architecture for microfabricated ion traps, built around ball-grid array (BGA) connections, that is suitable for increasingly complex trap designs. In the BGA trap, through-substrate vias bring electrical signals from the back side of the trap die to the surface trap structure on the top side. Gold-ball bump bonds connect the back side of the trap die to an interposer for signal routing from the carrier. Trench capacitors fabricated into the trap die replace area-intensive surface or edge capacitors. Wirebonds in the BGA architecture are moved to the interposer. These last two features allow the trap die to be reduced to only the area required to produce trapping fields. The smaller trap dimensions allow tight focusing of an addressing laser beam for fast single-qubit rotations. Performance of the BGA trap as characterized with 40Ca+ ions is comparable to previous surface-electrode traps in terms of ion heating rate, mode frequency stability, and storage lifetime. We demonstrate two-qubit entanglement operations with 171Yb+ ions in a second BGA trap....
This material is based upon work supported by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA) under U.S. Army Research Office (ARO) contracts W911NF1210605 and W911NF1010231. All statements of fact, opinion, or conclusions contained herein are those of the authors and should not be construed as representing the official views or policies of IARPA, the ODNI, or the U.S. Government.
To Realize the QDDR’s Early-Warning Goal, Invest in Data-Making
The U.S. Department of State dropped its second Quadrennial Diplomacy and Development Review, or QDDR, last week (here). Modeled on the Defense Department’s Quadrennial Defense Review, the QDDR lays out the department’s big-picture concerns and objectives so that—in theory—they can guide planning and shape day-to-day decision-making.
The new QDDR establishes four main goals, one of which is to “strengthen our ability to prevent and respond to internal conflict, atrocities, and fragility.” To help do that, the State Department plans to “increase [its] use of early warning analysis to drive early action on fragility and conflict.”...
Of course, quite a bit of well-designed conflict forecasting is already happening, much of it paid for by the U.S. government. To name a few of the relevant efforts: The Political Instability Task Force (PITF) and the Worldwide Integrated Conflict Early Warning System (W-ICEWS) routinely update forecasts of various forms of political crisis for U.S. government customers. IARPA’s Open Source Indicators (OSI) and Aggregative Contingent Estimation (ACE) programs are simultaneously producing forecasts now and discovering ways to make future forecasts even better. Meanwhile, outside the U.S. government, the European Union has recently developed its own Global Conflict Risk Index (GCRI), and the Early Warning Project now assesses risks of mass atrocities in countries worldwide."
IBM discovery pushes quantum computing closer to reality
A program partially funded by IARPA has uncovered a way for scientists to detect quantum errors, clearing the way for more practical uses of quantum computing....
The discovery — partially funded through an Intelligence Advanced Research Projects Activity, or IARPA, program — could have "enormous potential" for a myriad of applications.
"Quantum computing could be potentially transformative, enabling us to solve problems that are impossible or impractical to solve today," said Arvind Krishna, senior vice president and director of IBM Research, in a press release. "While quantum computers have traditionally been explored for cryptography, one area we find very compelling is the potential for practical quantum systems to solve problems in physics and quantum chemistry that are unsolvable today."
Can quantum computing change the world? This start-up is betting on it.
Imagine a computer that could sift through millions of financial transactions in real time to detect fraud or look for signs of insider trading, and do it exponentially faster than the most powerful computers in the world today....
Last week, IBM published a research paper describing two developments that could have significant implications for the future design of such computers. IBM’s research was funded in part by the Intelligence Advanced Research Projects Activity, which has sponsored several such efforts in the past.
The team demonstrated a way to identify and detect arbitrary errors in a quantum computer simultaneously; until now, only one type of error could be detected at a time. They also showed that it was possible to detect errors on a design that could potentially be scaled up to create larger, more powerful quantum computers.
Step forward for quantum computing
Quantum computers could offer a massive performance boost over conventional types, but progress toward commercially useful machines has been slow.
Now, scientists from IBM's Watson Research Center have successfully demonstrated a new method for correcting errors on a quantum circuit.
IBM Reports Quantum Computing Project Developments; Arvind Krishna Comments
IBM has reported two new developments in its ongoing work to build what the company calls a “practical” quantum computer as part of efforts to advance quantum computing to solve scientific problems in the fields of physics and chemistry....
The quantum computing project, which is partly funded under the Intelligence Advanced Research Projects Activity‘s multi-qubit-coherent-operations program, reported the new findings in the Nature Communications journal’s April 29 issue.