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quant-ph2025
Quantum Circuits for High-Dimensional Absolutely Maximally Entangled States
Berta Casas, Grzegorz Rajchel-MieldzioÄ, Suhail Ahmad Rather +4
Absolutely maximally entangled (AME) states of multipartite quantum systems exhibit maximal entanglement across all possible bipartitions. These states lead to teleportation protoc…
quant-ph2024
Multi-Unitary Complex Hadamard Matrices
Wojciech Bruzda, Grzegorz Rajchel-MieldzioÄ, Karol Å»yczkowski
We analyze the set of real and complex Hadamard matrices with additional symmetry constrains. In particular, we link the problem of existence of maximally entangled multipartite st…
quant-ph2024
Two-Unitary Complex Hadamard Matrices of Order
Wojciech Bruzda, Karol Życzkowski
A family of two-unitary complex Hadamard matrices (CHM) stemming from a particular matrix, of size is constructed. Every matrix in this orbit remains unitary after operations…