Zobrazeno 1 - 10
of 362
pro vyhledávání: '"John Rarity"'
Publikováno v:
IET Quantum Communication, Vol 5, Iss 3, Pp 291-302 (2024)
Abstract Quantum key distribution (QKD) provides a method of ensuring security using the laws of physics, avoiding the risks inherent in cryptosystems protected by computational complexity. Here, the authors investigate the feasibility of satellite
Externí odkaz:
https://doaj.org/article/777fc7bc92764892888b30b099085d4c
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-7 (2024)
Abstract The secure transmission of an image can be accomplished by encoding the image information, securely communicating this information, and subsequently reconstructing the image. Alternatively, here we show how the image itself can be directly t
Externí odkaz:
https://doaj.org/article/af35c3b36c1c45859c90f60e7a19b24e
Publikováno v:
IET Quantum Communication, Vol 5, Iss 1, Pp 52-65 (2024)
Abstract Long‐distance free space quantum key distribution based on CubeSats can be used to establish global quantum secure communication networks, with potential commercial applications benefitting from the low cost of its design and launch. Detec
Externí odkaz:
https://doaj.org/article/62c1b295922148e994e71702906097a0
Publikováno v:
New Journal of Physics, Vol 26, Iss 7, p 073038 (2024)
We explore how one might detect the dynamical quantum Cheshire cat proposed by Aharonov et al We show that, in practice, we need to bias the initial state by adding/subtracting a small probability amplitude (‘field’) of the orthogonal state, whic
Externí odkaz:
https://doaj.org/article/c8e8c4d7858a42aaae5c15ac15beb045
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-6 (2022)
Abstract It has been conjectured that counterfactual communication is impossible, even for post-selected quantum particles. We strongly challenge this by proposing precisely such a counterfactual scheme where—unambiguously—none of Alice’s photo
Externí odkaz:
https://doaj.org/article/b8f2b9a46d9c432d875095bf2477c756
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-14 (2022)
Abstract Unforgeable quantum money tokens were the first invention of quantum information science, but remain technologically challenging as they require quantum memories and/or long-distance quantum communication. More recently, virtual “S-money
Externí odkaz:
https://doaj.org/article/d6f23e80274c4927a3967447045d6c7a
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 048002 (2023)
We here reply to a recent comment by Vaidman [Phys. Rev. Res. 5, 048001 (2023)10.1103/PhysRevResearch.5.048001] on our paper [Phys. Rev. Res. 5, 023048 (2023)2643-156410.1103/PhysRevResearch.5.023048]. In his Comment, Vaidman first admits that he is
Externí odkaz:
https://doaj.org/article/7083b6f58da84208bc35b13b3e1c96b1
Autor:
Jonte R. Hance, John Rarity
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
Abstract We give a protocol for ghost imaging in a way that is always counterfactual—while imaging an object, no light interacts with that object. This extends the idea of counterfactuality beyond communication, showing how this interesting phenome
Externí odkaz:
https://doaj.org/article/f26a15c1e7a04971b031dedbb59a5122
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023048 (2023)
We investigate four key issues with using a nonzero weak value of the spatial projection operator to infer the past path of an individual quantum particle. First, we note that weak measurements disturb a system, so any approach relying on such a pert
Externí odkaz:
https://doaj.org/article/b5f44e315a274f218eab221ee7288e00
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 2, Pp 1-14 (2020)
Coincidence counters play the role of gating events from the background noise in almost every quantum photonics setup. Precise multi-channel and high count-rate coincidence counting tools have become desirable due to an increase in the complexity of
Externí odkaz:
https://doaj.org/article/694cdfa038f446588dcae4cb2871bd74