Output details
11 - Computer Science and Informatics
University of York
Article title
Exponentially enhanced quantum metrology
Type
D - Journal article
Title of journal
Physical Review Letters
Article number
220501
Volume number
100
Issue number
22
First page of article
-
ISSN of journal
0031-9007
Year of publication
2008
Number of additional authors
1
Additional information
<01>We show that scaling beyond the Heisenberg limit is possible for parameter estimation tasks. We show that when a suitable entanglement-generating unitary operator depending on a parameter is applied on N qubits in parallel, a precision of the order of 2-N in estimating the parameter may be achieved. This exponentially improves the precision achievable in classical and in quantum nonentangling strategies. Since our proposal, an experiment showing scaling beyond the Heisenberg limit has appeared in Nature 471, 486 (2011) doi:10.1038/nature09778 citing our work.
Interdisciplinary
-
Cross-referral requested
9 - Physics
Research group
I - Non-Standard Computation
Citation count
18
Proposed double-weighted
No
Double-weighted statement
-
Reserve for a double-weighted output
No
Non-English
No
English abstract
-
