Quantum computing has the potential to revolutionize technology, medicine, and science by providing faster and more efficient processors, sensors, and communication devices. The ability for individual qubits to occupy these "superposition states," where they are simultaneously in multiple states, underlies the great potential of quantum computers. "A quantum computer could easily do this.". "If you had asked that question of IBM in the 1960s, they probably would've said no, there's no way that's going to happen," Nichol says. But unlike conventional computers, quantum computers are notoriously fragile and noisy, so techniques optimized for conventional computers don’t port well to quantum computers. "It is an important step for showing how information can be transmitted quantum-mechanically—in manners quite different than our classical intuition would lead us to believe. The content is provided for information purposes only. The quantum computers of today and the next 5-10 years are limited by noisy operations, where the quantum computing gate operations produce inaccuracies and errors. P: 773.702.6614 Such noise data is routinely measured for IBM quantum systems as part of daily operation calibration and includes the error rates for each type of operation capable on the hardware. These simulations could be useful in developing new energy sources and studying the conditions of planets and galaxies or comparing compounds that could lead to new drug therapies. Your email address is used only to let the recipient know who sent the email. “Instead, if we compile with awareness of this noise and run our programs using the best qubits and operations in the hardware, we can significantly boost the success rate.”. You can unsubscribe at any time and we'll never share your details to third parties. Often, there is a severe mismatch between the quantum operations that the software deals with versus the ones that the hardware executes. Two new approaches for bringing quantum computers closer to practical reality were presented at the prestigious ASPLOS conference in Providence, RI last week by students and researchers from the EPiQC (Enabling Practical-scale Quantum Computation) collaboration, an NSF Expedition led by UChicago Prof. Fred Chong. What we're doing here is one step in that direction.". "The state-of-the art right now is doing something with only a few qubits, so we're still a long ways away from realizing the full potential of quantum computers. Google claims it has designed a machine that needs only 200 seconds to solve a … “Physicists have actually been using quantum optimal control to manipulate small systems for many years, but the issue is that their approach doesn’t scale,” Shi said. In a paper in the journal Nature, researchers from Purdue University and the University of Rochester, including John Nichol, an assistant professor of physics, and Rochester Ph.D. students Yadav P. Kandel and Haifeng Qiao, demonstrate their method of relaying information by transferring the state of electrons. A surprising consequence of this is that if the electrons are close enough, their states will swap back and forth in time. The research brings scientists one step closer to creating fully functional quantum computers and is the latest example of Rochester's initiative to better understand quantum … Each subprogram is small enough that it can be handled by the physics approach of quantum optimal control, without running into performance issues. This document is subject to copyright. Quantum computers have the potential to provide more insight into principles of physics and chemistry by simulating the behavior of matter at unusual conditions at the molecular level. The researchers observed that on real hardware, such as the 16-qubit IBM system, the error rates of quantum operations have very large variations across the different hardware resources (qubits/gates) in the system. Meanwhile, computer scientists have developed their own methods for compiling quantum programs down to the control knobs of quantum hardware. New method for detecting quantum states of electrons, Melting ice patch in Norway reveals large collection of ancient arrows, A photonic crystal coupled to a transmission line via an artificial atom, New transient ultraluminous X-ray source detected in the galaxy NGC 7090, X-ray diffraction reveals details inside mummies without having to open them up, Physicist creates N95-type respirators using cotton candy machine. EPiQC Students Present Quantum Computing Research at ASPLOS 2019. The computer science approach has the advantage of scalability — compilers can easily compile programs for machines with thousands of qubits. The other study, a collaboration between EPiQC researchers and IBM presented at ASPLOS by Princeton graduate student Prakash Murali, repurposes the quantum computer's reputation for noisiness into a new technique that improves the reliability of operations on real hardware. As Shi emphasizes, “on quantum computers, speeding up your execution time is do-or-die.”, “Past compilers for quantum programs have been modeled after compilers for modern conventional computers,” said Chong, Seymour Goodman Professor of Computer Science at UChicago and lead PI for EPiQC. These error rates can also vary from day to day. View Quantum Computing Research Papers on Academia.edu for free. 5730 S. Ellis Avenue Your opinions are important to us. The results announced Wednesday herald the rise of quantum computers. However, quantum bits cannot be copied, Nichol says, "so you have to be very clever about how you correct for errors. Neither your address nor the recipient's address will be used for any other purpose. However, in practice, success rates are much less than 100% because of noisy operations. "If you have one electron that's up and another electron that's down and you push them together for just the right amount of time, they will swap," Nichol says. You can be assured our editors closely monitor every feedback sent and will take appropriate actions. or, by University of Rochester. Moreover, this running time scales exponentially, which makes quantum optimal control untenable for the 20-100 qubit machines expected in the coming year. The information you enter will appear in your e-mail message and is not retained by Phys.org in any form. That said, will we all someday have quantum computers to replace our desktop computers? The EPiQC papers described a new compiler approach that combines insights from physics and computer science to speed up quantum programs by as much as tenfold, and a technique using noise data from quantum hardware to increase reliablity on today's error-prone machines. F: 773.702.8487, Student Summer Research Fellowship Program, Resources for current & incoming students, EPiQC (Enabling Practical-scale Quantum Computation) collaboration, EPIQC Grad Students Win Best Poster Award for Research on Qutrits, IBM and University of Chicago Collaborate to Advance Quantum Computing, UChicago-Led NSF “Expedition” Will Shorten Path to Practical Quantum Computing. Get weekly and/or daily updates delivered to your inbox. The core technique behind the EPiQC team's paper adapts quantum ... IBM's quantum roadmap highlights OpenPulse support as a key objective for 2019, ... Google cooperate on quantum computing research.

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