Demonstration of Density Matrix Exponentiation Using a Superconducting Quantum Processor
Morten Kjærgaard, Mollie E. Schwartz, Alex Greene, Gabriel Samach, Andreas Bengtsson, Michael F. O’Keeffe, Christopher M. McNally, Jochen Braumüller, David K. Kim, Philip Krantz, Milad Marvian, Alexander J. Melville, Bethany M. Niedzielski, Youngkyu Sung, Roni Winik, Jonilyn Yoder, D. Rosenberg, Kevin Obenland, Seth Lloyd, Terry P. Orlando · Physical Review X · 2022
Density matrix exponentiation may offer a natively quantum approach to programming quantum computers. A new experiment presents the first demonstration of the protocol in a superconducting quantum processor.