Search: WFRF:(Bengtsson M.) >
Demonstration of De...
Demonstration of Density Matrix Exponentiation Using a Superconducting Quantum Processor
-
- Kjaergaard, M. (author)
- Massachusetts Institute of Technology (MIT)
-
- Schwartz, M. E. (author)
- MIT Lincoln Laboratory
-
- Greene, A. (author)
- Massachusetts Institute of Technology (MIT)
-
show more...
-
- Samach, G. (author)
- Massachusetts Institute of Technology (MIT),MIT Lincoln Laboratory
-
- Bengtsson, Andreas, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Massachusetts Institute of Technology (MIT)
-
- O'Keeffe, M. (author)
- MIT Lincoln Laboratory
-
- McNally, C. M. (author)
- Massachusetts Institute of Technology (MIT)
-
- Braumüller, Jochen (author)
- Massachusetts Institute of Technology (MIT)
-
- Kim, David K. (author)
- MIT Lincoln Laboratory
-
- Krantz, Philip, 1984 (author)
- Massachusetts Institute of Technology (MIT)
-
- Marvian, M. (author)
- Massachusetts Institute of Technology (MIT)
-
- Melville, Alexander (author)
- MIT Lincoln Laboratory
-
- Niedzielski, Bethany M. (author)
- MIT Lincoln Laboratory
-
- Sung, Y. (author)
- Massachusetts Institute of Technology (MIT)
-
- Winik, Roni (author)
- Massachusetts Institute of Technology (MIT)
-
- Yoder, Jonilyn L. (author)
- MIT Lincoln Laboratory
-
- Rosenberg, D. (author)
- MIT Lincoln Laboratory
-
- Obenland, K. (author)
- MIT Lincoln Laboratory
-
- Lloyd, S. (author)
- Massachusetts Institute of Technology (MIT)
-
- Orlando, T. P. (author)
- Massachusetts Institute of Technology (MIT)
-
- Marvian, I. (author)
- Duke University
-
- Gustavsson, S. (author)
- Massachusetts Institute of Technology (MIT)
-
- Oliver, W. D. (author)
- Massachusetts Institute of Technology (MIT),MIT Lincoln Laboratory
-
show less...
-
(creator_code:org_t)
- 2022
- 2022
- English.
-
In: Physical Review X. - 2160-3308. ; 12:1
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- Quantum computers hold the potential to outperform classical supercomputers at certain tasks. To implement algorithms on a quantum computer, programmers use conventional computers and hardware to create a set of classical control signals that implement a desired quantum algorithm. However, feeding the quantum information forward requires an inefficient conversion: extraction of quantum information, conversion to classical control signals, and reinjection of those signals into the system to implement quantum operations. Here, we demonstrate a more natively quantum strategy to programming quantum computers. Our approach uses the density matrix exponentiation (DME) protocol, a general technique for using a quantum state to enact a quantum operation. It can be thought of as a subroutine with which programmers can turn multiple copies of a quantum state into instructions for next steps in a quantum algorithm.We implement DME using two qubits in a superconducting quantum processor. Our implementation relies on a high-fidelity two-qubit gate and a novel technique called quantum measurement emulation to approximately reset a known quantum state. These developments enable us to demonstrate the DME protocol for the first time on a small-scale quantum processor and benchmark its performance.While DME was originally proposed in the context of a specific quantum machine-learning algorithm, it may also represent a fundamentally different approach to quantum programming. It allows the possibility of encoding quantum algorithms directly into quantum states and executing those algorithms on other quantum states, enabling a new class of efficient quantum algorithms.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datorteknik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Engineering (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Datorsystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Computer Systems (hsv//eng)
Keyword
- DME protocol
- Quantum computers
- quantum measurement emulation
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Kjaergaard, M.
-
Schwartz, M. E.
-
Greene, A.
-
Samach, G.
-
Bengtsson, Andre ...
-
O'Keeffe, M.
-
show more...
-
McNally, C. M.
-
Braumüller, Joch ...
-
Kim, David K.
-
Krantz, Philip, ...
-
Marvian, M.
-
Melville, Alexan ...
-
Niedzielski, Bet ...
-
Sung, Y.
-
Winik, Roni
-
Yoder, Jonilyn L ...
-
Rosenberg, D.
-
Obenland, K.
-
Lloyd, S.
-
Orlando, T. P.
-
Marvian, I.
-
Gustavsson, S.
-
Oliver, W. D.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Computer and Inf ...
-
and Computer Enginee ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Computer and Inf ...
-
and Computer Science ...
-
- ENGINEERING AND TECHNOLOGY
-
ENGINEERING AND ...
-
and Electrical Engin ...
-
and Computer Systems
- Articles in the publication
-
Physical Review ...
- By the university
-
Chalmers University of Technology