RT Journal Article T1 Homomorphic encryption of the k=2 Bernstein–Vazirani algorithm A1 Fernández Ortiz, Pablo A1 Martín-Delgado Alcántara, Miguel Ángel AB We introduce a class of circuits that solve a particular case of the Bernstein-Vazirani recursive problem for second-level recursion. This class of circuits allows for the implementation of the oracle using a number of T-gates that grows linearly with the number of qubits in the problem. We find an application of this scheme to quantum homomorphic encryption (QHE), which is an important cryptographic technology useful for delegated quantum computing, allowing a remote server to perform quantum computations on encrypted quantum data, so that the server cannot know anything about the client's data. Liang's QHE schemes are suitable for circuits with a polynomial number of gates T/T† dagger. Thus, the simplified circuits we have constructed can be evaluated homomorphically in an efficient manner. PB IOP Publishing SN 1751-8113 YR 2024 FD 2024-08-22 LK https://hdl.handle.net/20.500.14352/137164 UL https://hdl.handle.net/20.500.14352/137164 LA eng NO Pablo Fernández and Miguel A Martin-Delgado 2024 J. Phys. A: Math. Theor. 57 365301 NO ©2024 The Author(s).W911NF-14-1-0103,PRE2019-090517 NO Ministerio de Ciencia, Innovación y Universidades (España) NO Agencia Estatal de Investigación (España) NO European Commission NO Comunidad de Madrid NO Ministerio de Economía y Competividad (España) NO Army Research Office (US) DS Docta Complutense RD 8 jun 2026