A back-of-the-envelope analysis shows the conditions for current quantum error-correcting codes and architectures to outperform classical computers.
Ryan Babbush et al.
PRX Quantum 2, 010103 (2021)
A method for performing theory-independent state and measurement tomography is described and implemented, providing a way to place experimental bounds on the validity of quantum theory.
Michael D. Mazurek, Matthew F. Pusey, Kevin J. Resch, and Robert W. Spekkens
PRX Quantum 2, 020302 (2021)
A broader notion of nonlocality is linked to foundational implications and information-processing tasks, such as our ability to perform nonclassical teleportation and discriminate quantum states.
Patryk Lipka-Bartosik, Andrés F. Ducuara, Tom Purves, and Paul Skrzypczyk
PRX Quantum 2, 020301 (2021)
Measurement of the electron spin of a quantum dot indicates that CMOS-compatible manufacturing processes are promising for fabricating long-lived silicon qubits.
Virginia N. Ciriano-Tejel et al.
PRX Quantum 2, 010353 (2021)
A journey through several theoretical approaches to measurement-induced phase transitions is presented: exact results are shown to be possible in some cases, and new lines of inquiry are opened up, with outstanding questions clearly delineated.
Adam Nahum, Sthitadhi Roy, Brian Skinner, and Jonathan Ruhman
PRX Quantum 2, 010352 (2021)
Experimentally relevant benchmarking options are proposed, expanding the available choices of benchmarking group while keeping the required resources comparable with previous methods.
Jahan Claes, Eleanor Rieffel, and Zhihui Wang
PRX Quantum 2, 010351 (2021)
A Bose-Einstein condensate quantum simulator, in experimentally achievable conditions, can be used to investigate aspects of the evolution of the early universe.
King Lun Ng et al.
PRX Quantum 2, 010350 (2021)