2 citations · 2 across the 6 of their papers we have counts for
7 papers
Quantum interaction can superactivate cheating under parallel repetition
Archishna Bhattacharyya, Laura Mančinska, Yuming Zhao
We study interactive multiprover games and many-round protocols in which the communication between the verifier and the provers is quantum. Parallel repetition is known to suppress…
Statistically secure uncloneable encryption of arbitrary messages
Archishna Bhattacharyya, Anne Broadbent, Eric Culf
Unconditional uncloneable encryption of a single bit with efficient encryption and decryption is now possible. However, whether the extension to messages of arbitrary length achiev…
The uncloneable bit exists
Archishna Bhattacharyya, Anne Broadbent, Eric Culf
We establish quantum uncloneable encryption with unconditional security, preventing two non-communicating adversaries from simultaneously decrypting a single ciphertext even wh…
On the undecidability of quantum channel capacities
Archishna Bhattacharyya, Arthur Mehta, Yuming Zhao
An important distinction in our understanding of capacities of classical versus quantum channels is marked by the following question: is there an algorithm which can compute (or ev…
Sequential transmission at short times
Archishna Bhattacharyya
We show that it is possible to transmit and preserve information at short time scales over an n-fold composition of quantum channels modelled as a discre…
Uncloneable Encryption from Decoupling
Archishna Bhattacharyya, Eric Culf
We show that uncloneable encryption exists with no computational assumptions, with security in the security parameter .
Memory of rheological stress in polymers using Fractional Calculus
Archishna Bhattacharyya, Pratyusha Nandi, Somasri Hazra +1
The rheological properties of viscoelastic materials like polymer melts are greatly affected by factors like salinity, temperature, concentration and pH of the solution. In this st…