RT Journal Article
T1 Coarse graining the phase space of N qubits
A1 Di Matteo, Olivia
A1 Sánchez Soto, Luis Lorenzo
A1 Leuchs, Gerd
A1 Grassl, M.
AB We develop a systematic coarse-graining procedure for systems of N qubits. We exploit the underlying geometrical structures of the associated discrete phase space to produce a coarse-grained version with reduced effective size. Our coarse-grained spaces inherit key properties of the original ones. In particular, our procedure naturally yields a subset of the original measurement operators, which can be used to construct a coarse discrete Wigner function. These operators also constitute a systematic choice of incomplete measurements for the tomographer wishing to probe an intractably large system.
PB Amer Physical Soc
SN 2469-9926
YR 2017
FD 2017-02-28
LK https://hdl.handle.net/20.500.14352/17800
UL https://hdl.handle.net/20.500.14352/17800
LA eng
NO ©2017 American Physical Society. O.D.M. is funded by Canada's NSERC. She is also grateful for hospitality at the MPL. IQC is supported in part by the government of Canada and the province of Ontario. L.L.S.-S. acknowledges financial support from the Spanish MINECO (Grant No. FIS2015-67963-P)
NO Ministerio de Economía y Competitividad (MINECO)
NO NSERC, Canada
NO Government of Canada
DS Docta Complutense
RD 17 abr 2025