@ampolloreno.bsky.social
Reposted
By connecting broadband detection directly to the integrated quantum Fisher information (see our previous work: journals.aps.org/prapplied/ab...), we give a geometric explanation of the lower bound.
Opportunities and Limitations in Broadband Sensing
Detecting a signal at an unknown frequency is a common task, arising in settings from dark-matter detection to magnetometry. For any detection protocol, the precision achieved depends on the frequency...
journals.aps.org
January 28, 2026 at 7:06 PM
By connecting broadband detection directly to the integrated quantum Fisher information (see our previous work: journals.aps.org/prapplied/ab...), we give a geometric explanation of the lower bound.
Reposted
New paper with Anthony Polloreno! We show that the Grover-like lower bound for broadband sensing is actually the familiar metrological fisher information constraint! We also find it can be saturated with a simple randomized SSH Hamiltonian---no QC needed! scirate.com/arxiv/2601.1...
Opportunities and Limitations in Broadband Sensing
Detecting a signal at an unknown frequency is a common task, arising in settings from dark-matter detection to magnetometry. For any detection protocol, the precision achieved depends on the frequency...
journals.aps.org
January 28, 2026 at 7:06 PM
New paper with Anthony Polloreno! We show that the Grover-like lower bound for broadband sensing is actually the familiar metrological fisher information constraint! We also find it can be saturated with a simple randomized SSH Hamiltonian---no QC needed! scirate.com/arxiv/2601.1...