• Author(s): Andrew D. King, Cristian D. Batista, Jack Raymond, Trevor Lanting, Isil Ozfidan, Gabriel Poulin-Lamarre, Hao Zhang, and Mohammad H. Amin A quantum annealing processor is used to investigate frustrated magnetism and show how the tuning of quantum fluctuations effect dynamical and equilibrium properties. [PRX Quantum 2, 030317] Published Fri Jul 30, 2021
  • Author(s): Fernando G.S.L. Brandão, Wissam Chemissany, Nicholas Hunter-Jones, Richard Kueng, and John Preskill A rigorous connection between complexity growth and unitary k-designs is provided, establishing a stronger notion of quantum complexity. [PRX Quantum 2, 030316] Published Thu Jul 29, 2021
  • Author(s): Teerawat Chalermpusitarak, Behnam Tonekaboni, Yuanlong Wang, Leigh M. Norris, Lorenza Viola, and Gerardo A. Paz-Silva A framework for resource-efficient characterization and control of non-Markovian open quantum systems is developed based on the notion of frames, overcoming severe constraints of existing approaches. [PRX Quantum 2, 030315] Published Tue Jul 27, 2021
  • Author(s): F. Battistel, B.M. Varbanov, and B.M. Terhal A scheme to bring a leaked state back into the computational subspace of superconducting qubits is presented, opening the prospect for near-term scalable demonstrations of quantum error correction. [PRX Quantum 2, 030314] Published Mon Jul 26, 2021
  • Author(s): Shengqi Sang, Yaodong Li, Tianci Zhou, Xiao Chen, Timothy H. Hsieh, and Matthew P.A. Fisher Universal multipartite entanglement is studied for a variety of measurement induced phase transitions, exact results are presented in a special case, and remarkable consistency is found in several different models away from this limit. [PRX Quantum 2, 030313] Published Fri Jul 23, 2021
  • Author(s): Jarrod R. McClean, Matthew P. Harrigan, Masoud Mohseni, Nicholas C. Rubin, Zhang Jiang, Sergio Boixo, Vadim N. Smelyanskiy, Ryan Babbush, and Hartmut Neven By gaining intuition about the mechanisms by which quantum optimization algorithms solve problems, approaches are identified that substantially improve the performance of quantum algorithms for this task. [PRX Quantum 2, 030312] Published Wed Jul 21, 2021
  • Author(s): Carlos de Gois, George Moreno, Ranieri Nery, Samuraí Brito, Rafael Chaves, and Rafael Rabelo Prepare and measure: A general and sufficient condition to certify that a given set of preparations can only generate classical statistics, for any number of generalized measurements, is devised. [PRX Quantum 2, 030311] Published Tue Jul 20, 2021