Reply to “Comment on ‘Quantum string seal is insecure’ ”

Quantum String Seal Is Insecure

A quantum string seal encodes the value of a (bit) string as a quantum state in such a way that everyone can extract a non-negligible amount of available information on the string by a suitable measurement. Moreover, such measurement must disturb the quantum state and is likely to be detected by an authorized verifier. In this way, the intactness of the encoded quantum state plays the role of a...

Reply to “Comment on ‘Thermodynamics of quantum crystalline membranes’ ”

Reply to comment on Y-00 quantum secure communication protocol

Recently, a criticism of the Yuen protocol (αη scheme) was made. This letter shows that the claim by Nishioka, and Imai group(Mitsubishi and University of Tokyo) is incorrect before they discuss whether αη scheme is quantum or classical. This misunderstanding comes from that these authors disregard the concept of signal detection theory and the basic concept of Y-00. Several industries have sta...

Reply to Comment: Quantum Cryptography Based on Orthogonal States?

Peres [1] claims that our protocol [2] does not present any novel feature, and it is very similar to the oldest protocol of Bennett and Brassard [3] (BB84). We completely disagree with this claim and with other points raised in the Comment. The essential novelty of our protocol is that the carrier of information is in a quantum state belonging to a definite set of orthonormal states. Any other ...

Reply to Comment on ”Quantum Measurement and Decoherence”

Abstract While agreeing with our exact expression for the time dependence of the motion of a free particle in an initial superposition state, corresponding to two identical Gaussians separated by a distance d, at temperature T , Gobert et al., in the preceding Comment [Phys. Rev. A xxx], dispute our conclusions on decoherence time scales. However, the parameters they used to generate their figu...