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quant-ph2026
Information Erasure and Quantum Imprint in Quantum Measurement and First-Order SPAM Error Separation
Taiga Suzuki, Yuki Ito, Masayuki Ohzeki
We introduce information erasure and quantum imprint as two properties that classify quantum instruments. Information erasure is the property that an appropriate postselection can…
quant-ph2026
Quantum secure blind decryption with two users
Masahito Hayashi, Yuki Ito
We propose two types of protocols for quantum secure blind decryption, involving two users and servers. User 1 holds the encrypted ciphertext. The servers store several indexed key…