Sequential semi-device-independent quantum randomness certification
Roch i Carceller, Carles LU
; Lee, Hanwool
LU
; Bohr Brask, Jonatan
; Flatt, Kieran
and Bae, Joonwoo
(2026)
In Physical Review Research
8(2).
- Abstract
Quantum measurements under realistic conditions reveal only partial information about a system. Yet, by performing sequential measurements on the same system, additional information can be accessed. We investigate this problem in the context of semi-device-independent randomness certification using sequential maximum-confidence measurements. We develop a general framework and versatile numerical methods to bound the amount of certifiable randomness in such scenarios. We further introduce a technique to compute min-tradeoff functions via semidefinite programming duality, thus making the framework suitable for bounding the certifiable randomness against adaptive attacking strategies through entropy accumulation. Our results establish... (More)
Quantum measurements under realistic conditions reveal only partial information about a system. Yet, by performing sequential measurements on the same system, additional information can be accessed. We investigate this problem in the context of semi-device-independent randomness certification using sequential maximum-confidence measurements. We develop a general framework and versatile numerical methods to bound the amount of certifiable randomness in such scenarios. We further introduce a technique to compute min-tradeoff functions via semidefinite programming duality, thus making the framework suitable for bounding the certifiable randomness against adaptive attacking strategies through entropy accumulation. Our results establish sufficient criteria showing that maximum-confidence measurements enable the distribution and certification of randomness across a sequential measurement chain in single-party systems.
(Less)
- author
- Roch i Carceller, Carles
LU
; Lee, Hanwool
LU
; Bohr Brask, Jonatan
; Flatt, Kieran
and Bae, Joonwoo
- organization
- publishing date
- 2026-04-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Research
- volume
- 8
- issue
- 2
- article number
- 023186
- publisher
- American Physical Society
- external identifiers
-
- scopus:105039037376
- ISSN
- 2643-1564
- DOI
- 10.1103/vb68-jlr3
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2026 authors. Published by the American Physical Society.
- id
- 77c62d61-d6f4-4038-9976-66f2b4eac8c7
- date added to LUP
- 2026-07-14 15:19:30
- date last changed
- 2026-07-14 15:20:16
@article{77c62d61-d6f4-4038-9976-66f2b4eac8c7,
abstract = {{<p>Quantum measurements under realistic conditions reveal only partial information about a system. Yet, by performing sequential measurements on the same system, additional information can be accessed. We investigate this problem in the context of semi-device-independent randomness certification using sequential maximum-confidence measurements. We develop a general framework and versatile numerical methods to bound the amount of certifiable randomness in such scenarios. We further introduce a technique to compute min-tradeoff functions via semidefinite programming duality, thus making the framework suitable for bounding the certifiable randomness against adaptive attacking strategies through entropy accumulation. Our results establish sufficient criteria showing that maximum-confidence measurements enable the distribution and certification of randomness across a sequential measurement chain in single-party systems.</p>}},
author = {{Roch i Carceller, Carles and Lee, Hanwool and Bohr Brask, Jonatan and Flatt, Kieran and Bae, Joonwoo}},
issn = {{2643-1564}},
language = {{eng}},
month = {{04}},
number = {{2}},
publisher = {{American Physical Society}},
series = {{Physical Review Research}},
title = {{Sequential semi-device-independent quantum randomness certification}},
url = {{http://dx.doi.org/10.1103/vb68-jlr3}},
doi = {{10.1103/vb68-jlr3}},
volume = {{8}},
year = {{2026}},
}