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quant-ph2025
On Computational Complexity of Unitary and State Design Properties
Yoshifumi Nakata, Yuki Takeuchi, Martin Kliesch +1
We investigate unitary and state -designs from a computational complexity perspective. First, we address the problems of computing frame potentials that characterize (approximat…
quant-ph2025
Efficient Simulation of Leakage Errors in Quantum Error Correcting Codes Using Tensor Network Methods
Hidetaka Manabe, Yasunari Suzuki, Andrew S. Darmawan
Leakage errors, in which a qubit is excited to a level outside the qubit subspace, represent a significant obstacle in the development of robust quantum computers. We present a com…