q-2021-11-11-576.pdf

…https://ubt.opus.hbz-nrw.de/opus45-ubtr/frontdoor/deliver/index/docId/ 732/file/Dissertation_Schulz.pdf. [27] Michal Sedlák, Alessandro Bisio, and Mário Ziman. Optimal Probabilistic Storage and Retrieval of Unitary Channels. Phys. Rev. Lett., 122(17):170502, May 2019. DOI: 10.1103/PhysRevLett.122.170502. [28] Sergii Strelchuk, Michał…

q-2023-05-15-1007.pdf

Unitary Evolutions Sourced By Interacting Quantum Memories: Closed Quantum Systems Directing Themselves Using Their State Histories Alireza Tavanfar1,2, Aliasghar Parvizi3,4, and Marco Pezzutto5 1Champalimaud Research, Champalimaud Center for the Unknown,…

q-2020-07-06-291.pdf

…two-qubit gates. 1 Introduction Options are financial derivative contracts that give the buyer the right, but not the obligation, to buy (call option) or sell (put option) an underlying asset…

q-2023-04-13-976.pdf

…more limited capabilities and must delegate complex computations to large servers. However, there is also an inherent lack of trust between the service providers and the users: individuals would like…

Donations welcome!

…first wave of submissions). These we cannot, and rather would not want to, cover with the publication fee, which is really meant to be for the running costs of the…

Quantum money

…openly available financial data, to adapt to changes in the financial situation. Flexibility in the publication fees. Since our fees are regular publication fees, as in any other open-access journal,…

Should Quantum be selective?

…a hundred thoughtful comments! While this public discussion had the most visibility, we would also like to acknowledge all the private feedback that we received (in particular from applicants to…

q-2023-11-03-1159.pdf

Essay on the Completion of Quantum Theory. I: General Setting” (2017). arXiv:1711.08643. [7] Wolfgang Bertram. “An Essay on the Completion of Quantum Theory. II: Unitary Time Evolution” (2018). arXiv:1807.04650. [8]…

q-2020-03-16-242.pdf

…pλ). It is constructed in a preferred basis {|j〉}, which we use in defining two helper functions. First, zj(|λ〉) = inf |φ〉:tr([j][φ])≥1/d tr([λ][φ]). (20) Note that zj(|λ〉) > if and…