19 citations · 56 across the 28 of their papers we have counts for
7 papers · 1 filter
Pseudorandom Isometries
Prabhanjan Ananth, Aditya Gulati, Fatih Kaleoglu +1
We introduce a new notion called -secure pseudorandom isometries (PRI). A pseudorandom isometry is an efficient quantum circuit that maps an -qubit state to an …
A Modular Approach to Unclonable Cryptography
Prabhanjan Ananth, Amit Behera
We explore a new pathway to designing unclonable cryptographic primitives. We propose a new notion called unclonable puncturable obfuscation (UPO) and study its implications for un…
Provable Robust Watermarking for AI-Generated Text
Xuandong Zhao, Prabhanjan Ananth, Lei Li +1
We study the problem of watermarking large language models (LLMs) generated text -- one of the most promising approaches for addressing the safety challenges of LLM usage. In this…
Pseudorandom Strings from Pseudorandom Quantum States
Prabhanjan Ananth, Yao-Ting Lin, Henry Yuen
We study the relationship between notions of pseudorandomness in the quantum and classical worlds. Pseudorandom quantum state generator (PRSG), a pseudorandomness notion in the qua…
Cloning Games: A General Framework for Unclonable Primitives
Prabhanjan Ananth, Fatih Kaleoglu, Qipeng Liu
The powerful no-cloning principle of quantum mechanics can be leveraged to achieve interesting primitives, referred to as unclonable primitives, that are impossible to achieve clas…
Revocable Cryptography from Learning with Errors
Prabhanjan Ananth, Alexander Poremba, Vinod Vaikuntanathan
Quantum cryptography leverages many unique features of quantum information in order to construct cryptographic primitives that are oftentimes impossible classically. In this work,…